diff --git a/Core/Data/GlobalSettings.cs b/Core/Data/GlobalSettings.cs
index 5c2b385..398f88e 100644
--- a/Core/Data/GlobalSettings.cs
+++ b/Core/Data/GlobalSettings.cs
@@ -6,20 +6,28 @@ using Newtonsoft.Json;
 
 namespace ADOFAIRenderer.Core.Data;
 
-public class GlobalConfig
+internal class GlobalConfig
 {
     public string? OutputDirectory { get; set; }
+    public string? LastPresetName { get; set; }
+    public bool DefaultPresetsInitialized { get; set; }
 }
 
-public static class GlobalSettings
+internal static class GlobalSettings
 {
-    private static string SettingsFilePath =>
-        Path.Combine(MelonEnvironment.GameRootDirectory, "UserData", "ADOFAIRenderer", "global_settings.json");
+    private static string GetGameRootDir()
+    {
+        var root = MelonEnvironment.GameRootDirectory;
+        return string.IsNullOrEmpty(root) ? AppDomain.CurrentDomain.BaseDirectory : root;
+    }
 
-    public static GlobalConfig Current { get; set; } = new();
+    private static string SettingsFilePath =>
+        Path.Combine(GetGameRootDir(), "UserData", "ADOFAIRenderer", "global_settings.json");
+
+    public static GlobalConfig Current { get; private set; } = new();
 
     public static string DefaultOutputDirectory =>
-        Path.Combine(MelonEnvironment.GameRootDirectory, "Render");
+        Path.Combine(GetGameRootDir(), "Render");
 
     public static string EffectiveOutputDirectory
     {
diff --git a/Core/PresetManager.cs b/Core/PresetManager.cs
index f0b2bde..afcf8bc 100644
--- a/Core/PresetManager.cs
+++ b/Core/PresetManager.cs
@@ -2,24 +2,118 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using ADOFAIRenderer.Core.Data;
+using ADOFAIRenderer.Data;
 using MelonLoader;
 using MelonLoader.Utils;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 
-namespace ADOFAIRenderer.Data;
+namespace ADOFAIRenderer.Core;
 
-internal class RenderPreset
+public class RenderPreset
 {
     public string Name { get; set; } = string.Empty;
     public RenderConfig Config { get; set; } = null!;
+
+    public RenderPreset Clone()
+    {
+        return new RenderPreset
+        {
+            Name = Name,
+            Config = Config.Clone()
+        };
+    }
 }
 
-internal static class PresetManager
+public static class PresetManager
 {
+    private static readonly List<RenderPreset> DefaultPresets = new()
+    {
+        new RenderPreset
+        {
+            Name = "FHD 60fps (1x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 1920,
+                RenderHeight = 1080,
+                RenderFPS = 60,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 20000, MaxBitrate = 35000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        },
+        new RenderPreset
+        {
+            Name = "FHD 60fps (4x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 1920,
+                RenderHeight = 1080,
+                RenderFPS = 240,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 30000, MaxBitrate = 50000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        },
+        new RenderPreset
+        {
+            Name = "QHD 60fps (4x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 2560,
+                RenderHeight = 1440,
+                RenderFPS = 240,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 35000, MaxBitrate = 60000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        },
+        new RenderPreset
+        {
+            Name = "4K 60fps (4x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 3840,
+                RenderHeight = 2160,
+                RenderFPS = 240,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 60000, MaxBitrate = 100000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        }
+    };
+
     private static string GetPresetsDirectory()
     {
-        return Path.Combine(MelonEnvironment.GameRootDirectory, "UserData", "ADOFAIRenderer", "Presets");
+        string? root = null;
+        try
+        {
+            root = MelonEnvironment.GameRootDirectory;
+        }
+        catch
+        {
+            // Outside MelonLoader host environment (e.g. tests)
+        }
+
+        if (string.IsNullOrEmpty(root))
+        {
+            root = AppDomain.CurrentDomain.BaseDirectory;
+        }
+
+        return Path.Combine(root, "UserData", "ADOFAIRenderer", "Presets");
     }
 
     private static string GetSafeFileName(string name)
@@ -27,6 +121,45 @@ internal static class PresetManager
         return Path.GetInvalidFileNameChars().Aggregate(name, (current, c) => current.Replace(c, '_'));
     }
 
+    public static void EnsureDefaultPresetsCreated()
+    {
+        try
+        {
+            var dir = GetPresetsDirectory();
+            if (!Directory.Exists(dir))
+            {
+                Directory.CreateDirectory(dir);
+            }
+
+            if (!GlobalSettings.Current.DefaultPresetsInitialized)
+            {
+                var settings = new JsonSerializerSettings
+                {
+                    Formatting = Formatting.Indented
+                };
+                settings.Converters.Add(new ColorJsonConverter());
+
+                foreach (var def in DefaultPresets)
+                {
+                    var safeName = GetSafeFileName(def.Name);
+                    var filePath = Path.Combine(dir, safeName + ".json");
+                    if (!File.Exists(filePath))
+                    {
+                        var json = JsonConvert.SerializeObject(def, settings);
+                        File.WriteAllText(filePath, json);
+                    }
+                }
+
+                GlobalSettings.Current.DefaultPresetsInitialized = true;
+                GlobalSettings.Save();
+            }
+        }
+        catch (Exception ex)
+        {
+            MelonLogger.Warning($"Error initializing default presets: {ex.Message}");
+        }
+    }
+
     public static void SavePreset(string name, RenderConfig config)
     {
         if (string.IsNullOrWhiteSpace(name))
@@ -43,10 +176,16 @@ internal static class PresetManager
         var preset = new RenderPreset
         {
             Name = name,
-            Config = config
+            Config = config.Clone()
         };
 
-        string json = JsonConvert.SerializeObject(preset, Formatting.Indented);
+        var settings = new JsonSerializerSettings
+        {
+            Formatting = Formatting.Indented
+        };
+        settings.Converters.Add(new ColorJsonConverter());
+
+        string json = JsonConvert.SerializeObject(preset, settings);
         string safeName = GetSafeFileName(name);
         string filePath = Path.Combine(dir, safeName + ".json");
         File.WriteAllText(filePath, json);
@@ -54,14 +193,26 @@ internal static class PresetManager
 
     public static List<RenderPreset> GetPresets()
     {
+        EnsureDefaultPresetsCreated();
+
         var presets = new List<RenderPreset>();
         var dir = GetPresetsDirectory();
-            
-        if (!Directory.Exists(dir)) return presets;
+        if (!Directory.Exists(dir))
+        {
+            foreach (var b in DefaultPresets)
+            {
+                presets.Add(b.Clone());
+            }
+            return presets;
+        }
 
         try
         {
             var files = Directory.GetFiles(dir, "*.json");
+            var serializerSettings = new JsonSerializerSettings();
+            serializerSettings.Converters.Add(new ColorJsonConverter());
+            var serializer = JsonSerializer.Create(serializerSettings);
+
             foreach (var file in files)
             {
                 try
@@ -146,9 +297,20 @@ internal static class PresetManager
                         }
                     }
                             
-                    var preset = jObject.ToObject<RenderPreset>();
-                    if (preset != null && !string.IsNullOrEmpty(preset.Name))
+                    var preset = jObject.ToObject<RenderPreset>(serializer);
+                    if (preset != null)
                     {
+                        var fileBaseName = Path.GetFileNameWithoutExtension(file);
+                        if (string.IsNullOrWhiteSpace(preset.Name))
+                        {
+                            preset.Name = fileBaseName;
+                        }
+
+                        if (presets.Any(p => string.Equals(p.Name, preset.Name, StringComparison.OrdinalIgnoreCase)))
+                        {
+                            continue;
+                        }
+
                         presets.Add(preset);
                     }
                 }
@@ -177,13 +339,44 @@ internal static class PresetManager
 
     public static void DeletePreset(string name)
     {
+        if (string.IsNullOrWhiteSpace(name)) return;
+
         var dir = GetPresetsDirectory();
+        if (!Directory.Exists(dir)) return;
+
         var safeName = GetSafeFileName(name);
         var filePath = Path.Combine(dir, safeName + ".json");
 
         if (File.Exists(filePath))
         {
             File.Delete(filePath);
+            return;
+        }
+
+        foreach (var file in Directory.GetFiles(dir, "*.json"))
+        {
+            try
+            {
+                var fileBaseName = Path.GetFileNameWithoutExtension(file);
+                if (string.Equals(fileBaseName, name, StringComparison.OrdinalIgnoreCase))
+                {
+                    File.Delete(file);
+                    return;
+                }
+
+                var json = File.ReadAllText(file);
+                var jObject = JsonConvert.DeserializeObject<JObject>(json);
+                var pName = (string?)jObject?["Name"];
+                if (string.Equals(pName, name, StringComparison.OrdinalIgnoreCase))
+                {
+                    File.Delete(file);
+                    return;
+                }
+            }
+            catch
+            {
+                // Ignore read errors during cleanup search
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/Data/ColorJsonConverter.cs b/Data/ColorJsonConverter.cs
new file mode 100644
index 0000000..374ff85
--- /dev/null
+++ b/Data/ColorJsonConverter.cs
@@ -0,0 +1,109 @@
+using System;
+using System.Globalization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEngine;
+
+namespace ADOFAIRenderer.Data;
+
+/// <summary>
+/// Converts Unity <see cref="Color"/> and nullable <see cref="Color"/> to and from hex string (#RRGGBBAA).
+/// Pure C# implementation to completely avoid Unity internal native ECalls (such as Color.linear or ColorUtility.TryParseHtmlString).
+/// </summary>
+public class ColorJsonConverter : JsonConverter
+{
+    public override bool CanConvert(Type objectType)
+    {
+        return objectType == typeof(Color) || objectType == typeof(Color?);
+    }
+
+    public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
+    {
+        if (value == null)
+        {
+            writer.WriteNull();
+            return;
+        }
+
+        var color = (Color)value;
+        writer.WriteValue(ToHex(color));
+    }
+
+    public override object? ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
+    {
+        bool isNullable = Nullable.GetUnderlyingType(objectType) != null || !objectType.IsValueType;
+
+        if (reader.TokenType == JsonToken.Null)
+        {
+            return isNullable ? null : (object)default(Color);
+        }
+
+        if (reader.TokenType == JsonToken.String)
+        {
+            var str = (string?)reader.Value;
+            if (TryParseHex(str, out var parsedColor))
+            {
+                return parsedColor;
+            }
+
+            return isNullable ? null : (object)default(Color);
+        }
+
+        if (reader.TokenType == JsonToken.StartObject)
+        {
+            var obj = JObject.Load(reader);
+            float r = (float?)obj["r"] ?? 0f;
+            float g = (float?)obj["g"] ?? 0f;
+            float b = (float?)obj["b"] ?? 0f;
+            float a = (float?)obj["a"] ?? 1f;
+            return new Color(r, g, b, a);
+        }
+
+        return isNullable ? null : (object)default(Color);
+    }
+
+    public static string ToHex(Color color)
+    {
+        byte r = (byte)Math.Clamp((int)Math.Round(color.r * 255f), 0, 255);
+        byte g = (byte)Math.Clamp((int)Math.Round(color.g * 255f), 0, 255);
+        byte b = (byte)Math.Clamp((int)Math.Round(color.b * 255f), 0, 255);
+        byte a = (byte)Math.Clamp((int)Math.Round(color.a * 255f), 0, 255);
+        return $"#{r:X2}{g:X2}{b:X2}{a:X2}";
+    }
+
+    public static bool TryParseHex(string? hex, out Color color)
+    {
+        color = default;
+        if (string.IsNullOrWhiteSpace(hex)) return false;
+
+        var str = hex.Trim();
+        if (str.StartsWith("#"))
+        {
+            str = str.Substring(1);
+        }
+
+        if (str.Length == 6)
+        {
+            if (byte.TryParse(str.Substring(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var r) &&
+                byte.TryParse(str.Substring(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var g) &&
+                byte.TryParse(str.Substring(4, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var b))
+            {
+                color = new Color(r / 255f, g / 255f, b / 255f, 1f);
+                return true;
+            }
+        }
+        else if (str.Length == 8)
+        {
+            if (byte.TryParse(str.Substring(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var r) &&
+                byte.TryParse(str.Substring(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var g) &&
+                byte.TryParse(str.Substring(4, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var b) &&
+                byte.TryParse(str.Substring(6, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var a))
+            {
+                color = new Color(r / 255f, g / 255f, b / 255f, a / 255f);
+                return true;
+            }
+        }
+
+        return false;
+    }
+}
diff --git a/Data/RenderConfig.cs b/Data/RenderConfig.cs
index 381e6d7..832db43 100644
--- a/Data/RenderConfig.cs
+++ b/Data/RenderConfig.cs
@@ -1,74 +1,156 @@
-using System.Diagnostics.CodeAnalysis;
-using UnityEngine;
-
-namespace ADOFAIRenderer.Data;
-
-[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
-public class RenderConfig
-{
-    public double RenderFPS { get; set; }
-    public double VideoFPS { get; set; }
-
-    public int RenderWidth { get; set; }
-    public int RenderHeight { get; set; }
-        
-    public VideoEncodingConfig VideoConfig { get; set; } = new();
-    public AudioEncodingConfig AudioConfig { get; set; } = new();
-    public AdvancedConfig AdvancedConfig { get; set; } = new();
-
-    public double DelayAfterEnd { get; set; } = 15;
-    public bool ShowJudgementText { get; set; } = false;
-}
-
-[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
-public class AdvancedConfig
-{
-    public int? RandomSeed { get; set; } = null;
-    public bool ProcessAudio { get; set; } = true;
-    public bool NonTile { get; set; } = false;
-    public string FileExtension { get; set; } = "mkv";
-
-    public Color? firePlanetColor = null;
-    public Color? icePlanetColor = null;
-    public Color? windPlanetColor = null;
-}
-
-public class VideoEncodingConfig
-{
-    public Codec Codec { get; set; } = Codec.H264;
-    public RateControlMode RateControlMode { get; set; } = RateControlMode.CBR;
-        
-    public int Bitrate { get; set; } = 30000;
-    public int MaxBitrate { get; set; } = 50000;
-    // ReSharper disable once InconsistentNaming
-    public int QP { get; set; } = 18;
-    public double KeyframeInterval { get; set; } = 2.0;
-    public bool ForceSoftwareEncoder { get; set; }
-}
-
-public class AudioEncodingConfig
-{
-    private int _audioSampleRate = 48000;
-    private int _audioChannels = 2;
-    private int _audioBitrate = 256000;
-
-    public bool RenderAudio { get; set; } = true;
-
-    public int AudioSampleRate
-    {
-        get => _audioSampleRate <= 0 ? 48000 : _audioSampleRate;
-        set => _audioSampleRate = value <= 0 ? 48000 : value;
-    }
-
-    public int AudioChannels
-    {
-        get => _audioChannels <= 0 ? 2 : _audioChannels;
-        set => _audioChannels = value <= 0 ? 2 : value;
-    }
-
-    public int AudioBitrate
-    {
-        get => _audioBitrate <= 0 ? 256000 : _audioBitrate;
-        set => _audioBitrate = value <= 0 ? 256000 : value;
-    }
-}
\ No newline at end of file
+using System.Diagnostics.CodeAnalysis;
+using Newtonsoft.Json;
+using UnityEngine;
+
+namespace ADOFAIRenderer.Data;
+
+[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
+public class RenderConfig
+{
+    public double RenderFPS { get; set; }
+    public double VideoFPS { get; set; }
+
+    public int RenderWidth { get; set; }
+    public int RenderHeight { get; set; }
+        
+    public VideoEncodingConfig VideoConfig { get; set; } = new();
+    public AudioEncodingConfig AudioConfig { get; set; } = new();
+    public AdvancedConfig AdvancedConfig { get; set; } = new();
+
+    public double DelayAfterEnd { get; set; } = 15;
+    public bool ShowJudgementText { get; set; } = false;
+
+    public void CopyFrom(RenderConfig? source)
+    {
+        if (source == null) return;
+        RenderFPS = source.RenderFPS;
+        VideoFPS = source.VideoFPS;
+        RenderWidth = source.RenderWidth;
+        RenderHeight = source.RenderHeight;
+        DelayAfterEnd = source.DelayAfterEnd;
+        ShowJudgementText = source.ShowJudgementText;
+
+        VideoConfig.CopyFrom(source.VideoConfig);
+        AudioConfig.CopyFrom(source.AudioConfig);
+        AdvancedConfig.CopyFrom(source.AdvancedConfig);
+    }
+
+    public RenderConfig Clone()
+    {
+        var clone = new RenderConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}
+
+[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
+public class AdvancedConfig
+{
+    public int? RandomSeed { get; set; } = null;
+    public bool ProcessAudio { get; set; } = true;
+    public bool NonTile { get; set; } = false;
+    public string FileExtension { get; set; } = "mkv";
+
+    [JsonConverter(typeof(ColorJsonConverter))]
+    public Color? firePlanetColor = null;
+
+    [JsonConverter(typeof(ColorJsonConverter))]
+    public Color? icePlanetColor = null;
+
+    [JsonConverter(typeof(ColorJsonConverter))]
+    public Color? windPlanetColor = null;
+
+    public void CopyFrom(AdvancedConfig? source)
+    {
+        if (source == null) return;
+        RandomSeed = source.RandomSeed;
+        ProcessAudio = source.ProcessAudio;
+        NonTile = source.NonTile;
+        FileExtension = source.FileExtension;
+        firePlanetColor = source.firePlanetColor;
+        icePlanetColor = source.icePlanetColor;
+        windPlanetColor = source.windPlanetColor;
+    }
+
+    public AdvancedConfig Clone()
+    {
+        var clone = new AdvancedConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}
+
+public class VideoEncodingConfig
+{
+    public Codec Codec { get; set; } = Codec.H264;
+    public RateControlMode RateControlMode { get; set; } = RateControlMode.CBR;
+        
+    public int Bitrate { get; set; } = 30000;
+    public int MaxBitrate { get; set; } = 50000;
+    // ReSharper disable once InconsistentNaming
+    public int QP { get; set; } = 18;
+    public double KeyframeInterval { get; set; } = 2.0;
+    public bool ForceSoftwareEncoder { get; set; }
+
+    public void CopyFrom(VideoEncodingConfig? source)
+    {
+        if (source == null) return;
+        Codec = source.Codec;
+        RateControlMode = source.RateControlMode;
+        Bitrate = source.Bitrate;
+        MaxBitrate = source.MaxBitrate;
+        QP = source.QP;
+        KeyframeInterval = source.KeyframeInterval;
+        ForceSoftwareEncoder = source.ForceSoftwareEncoder;
+    }
+
+    public VideoEncodingConfig Clone()
+    {
+        var clone = new VideoEncodingConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}
+
+public class AudioEncodingConfig
+{
+    private int _audioSampleRate = 48000;
+    private int _audioChannels = 2;
+    private int _audioBitrate = 256000;
+
+    public bool RenderAudio { get; set; } = true;
+
+    public int AudioSampleRate
+    {
+        get => _audioSampleRate <= 0 ? 48000 : _audioSampleRate;
+        set => _audioSampleRate = value <= 0 ? 48000 : value;
+    }
+
+    public int AudioChannels
+    {
+        get => _audioChannels <= 0 ? 2 : _audioChannels;
+        set => _audioChannels = value <= 0 ? 2 : value;
+    }
+
+    public int AudioBitrate
+    {
+        get => _audioBitrate <= 0 ? 256000 : _audioBitrate;
+        set => _audioBitrate = value <= 0 ? 256000 : value;
+    }
+
+    public void CopyFrom(AudioEncodingConfig? source)
+    {
+        if (source == null) return;
+        RenderAudio = source.RenderAudio;
+        AudioSampleRate = source.AudioSampleRate;
+        AudioChannels = source.AudioChannels;
+        AudioBitrate = source.AudioBitrate;
+    }
+
+    public AudioEncodingConfig Clone()
+    {
+        var clone = new AudioEncodingConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}
\ No newline at end of file
diff --git a/Localization/Locale/en.json b/Localization/Locale/en.json
index e3af036..dd18ac8 100644
--- a/Localization/Locale/en.json
+++ b/Localization/Locale/en.json
@@ -1,5 +1,18 @@
 {
   "ui.render_config.window_title": "Render Config",
+  "ui.render_config.presets": "Presets",
+  "ui.render_config.preset_select": "Preset",
+  "ui.render_config.preset_name_placeholder": "New preset name...",
+  "ui.render_config.preset_save": "Save",
+  "ui.render_config.preset_delete": "Delete",
+  "ui.render_config.preset_overwrite_title": "Overwrite Preset",
+  "ui.render_config.preset_overwrite_desc": "A preset named '{0}' already exists. Do you want to overwrite it?",
+  "ui.render_config.preset_delete_title": "Delete Preset",
+  "ui.render_config.preset_delete_desc": "Are you sure you want to delete preset '{0}'?",
+  "ui.render_config.preset_name_empty": "Please enter a preset name.",
+  "ui.render_config.preset_custom": "(Modified)",
+  "ui.render_config.confirm": "Confirm",
+  "ui.render_config.cancel": "Cancel",
   "ui.render_config.render_fps": "Render FPS",
   "ui.render_config.video_fps": "Video FPS",
   "ui.render_config.render_width": "Render Width",
diff --git a/Localization/Locale/ko.json b/Localization/Locale/ko.json
index 1ac92e3..6d8563a 100644
--- a/Localization/Locale/ko.json
+++ b/Localization/Locale/ko.json
@@ -1,15 +1,28 @@
 {
   "ui.render_config.window_title": "렌더 설정",
+  "ui.render_config.presets": "프리셋",
+  "ui.render_config.preset_select": "프리셋 선택",
+  "ui.render_config.preset_name_placeholder": "새 프리셋 이름...",
+  "ui.render_config.preset_save": "저장",
+  "ui.render_config.preset_delete": "삭제",
+  "ui.render_config.preset_overwrite_title": "프리셋 덮어쓰기",
+  "ui.render_config.preset_overwrite_desc": "'{0}' 프리셋이 이미 존재합니다. 덮어쓰시겠습니까?",
+  "ui.render_config.preset_delete_title": "프리셋 삭제",
+  "ui.render_config.preset_delete_desc": "'{0}' 프리셋을 정말 삭제하시겠습니까?",
+  "ui.render_config.preset_name_empty": "프리셋 이름을 입력해 주세요.",
+  "ui.render_config.preset_custom": "(수정됨)",
+  "ui.render_config.confirm": "확인",
+  "ui.render_config.cancel": "취소",
   "ui.render_config.render_fps": "렌더링 FPS",
   "ui.render_config.video_fps": "영상 FPS",
   "ui.render_config.render_width": "렌더링 너비",
   "ui.render_config.render_height": "렌더링 높이",
   "ui.render_config.delay_after_end": "종료 후 대기 시간 (초)",
   "ui.render_config.show_judgement": "판정 텍스트 표시",
-  "ui.render_config.video_encoding": "Video Encoding Config",
-  "ui.render_config.audio_encoding": "Audio Encoding Config",
-  "ui.render_config.global_settings": "Global Settings",
-  "ui.render_config.advanced_settings": "Advanced Settings",
+  "ui.render_config.video_encoding": "비디오 인코딩 설정",
+  "ui.render_config.audio_encoding": "오디오 인코딩 설정",
+  "ui.render_config.global_settings": "전역 설정",
+  "ui.render_config.advanced_settings": "고급 설정",
   "ui.render_config.go_render": "렌더 시작",
   "ui.render_config.codec": "코덱",
   "ui.render_config.rate_control": "비트레이트 제어 모드",
diff --git a/UI/Window/RenderConfigWindow.cs b/UI/Window/RenderConfigWindow.cs
index cf5d5e7..9963feb 100644
--- a/UI/Window/RenderConfigWindow.cs
+++ b/UI/Window/RenderConfigWindow.cs
@@ -21,6 +21,13 @@ internal static class RenderConfigWindow
 {
     private static O5Window? _configWindow;
 
+    // Presets controls
+    private static O5Dropdown<string>? _presetDropdown;
+    private static O5InputField? _presetNameInput;
+    private static O5Button? _savePresetButton;
+    private static O5Button? _deletePresetButton;
+    private static string? _lastLoadedPresetName;
+
     // Controls cache for validation & sync
     private static O5Slider? _renderFpsSlider;
     private static O5Slider? _videoFPSSlider;
@@ -89,6 +96,10 @@ internal static class RenderConfigWindow
 
             BuildUI(_configWindow.Content);
         }
+        else
+        {
+            ReloadPresetDropdown(GlobalSettings.Current.LastPresetName);
+        }
         
         // ReSharper disable once NullCoalescingConditionIsAlwaysNotNullAccordingToAPIContract
         var config = RenderManager.Instance.Configuration ??= new RenderConfig();
@@ -133,7 +144,117 @@ internal static class RenderConfigWindow
             864, 960, 1536, 2048, 3072 // 4:3
         };
         
-        // TODO: Presets
+        // Presets (Collapsible Card)
+        var (_, presetContent) = O5Factory.Card(
+            ctx, scrollContent,
+            LocalizationManager.Get("ui.render_config.presets"),
+            activeValue: true,
+            onActiveChanged: null,
+            onDeleteClick: null,
+            showDeleteButton: false,
+            showActiveToggle: false
+        );
+
+        var presets = PresetManager.GetPresets();
+        var presetNames = presets.Select(p => p.Name).ToList();
+        var initialPresetName = GlobalSettings.Current.LastPresetName;
+        if (string.IsNullOrEmpty(initialPresetName) || !presetNames.Contains(initialPresetName))
+        {
+            initialPresetName = presetNames.FirstOrDefault(n => n.StartsWith("QHD", StringComparison.OrdinalIgnoreCase))
+                ?? (presetNames.Count > 0 ? presetNames[0] : "");
+        }
+        _lastLoadedPresetName = initialPresetName;
+
+        if (config.RenderFPS <= 0)
+        {
+            var initialPreset = presets.FirstOrDefault(p => string.Equals(p.Name, initialPresetName, StringComparison.OrdinalIgnoreCase)) ?? presets.FirstOrDefault();
+            if (initialPreset != null)
+            {
+                config.CopyFrom(initialPreset.Config);
+            }
+        }
+        EnsureDefaultConfig(config);
+
+        _presetDropdown = CreateDropdownField(
+            ctx, presetContent,
+            LocalizationManager.Get("ui.render_config.preset_select"),
+            initialPresetName, initialPresetName,
+            presetNames, p => p,
+            "dd_presets",
+            selectedName =>
+            {
+                OnPresetSelected(selectedName, config);
+            }
+        );
+
+        var actionsRowObj = new GameObject("PresetActionsRow");
+        actionsRowObj.transform.SetParent(presetContent, false);
+        var actionsRowRect = actionsRowObj.AddComponent<RectTransform>();
+        var actionsHLayout = actionsRowObj.AddComponent<HorizontalLayoutGroup>();
+        actionsHLayout.spacing = 8f;
+        actionsHLayout.childAlignment = TextAnchor.MiddleCenter;
+        actionsHLayout.childControlWidth = true;
+        actionsHLayout.childControlHeight = true;
+        actionsHLayout.childForceExpandWidth = false;
+        actionsHLayout.childForceExpandHeight = false;
+
+        // ReSharper disable once InconsistentNaming
+        var actionsRowLE = actionsRowObj.AddComponent<LayoutElement>();
+        actionsRowLE.preferredHeight = 40f;
+        actionsRowLE.flexibleWidth = 1f;
+
+        _presetNameInput = O5Factory.Input(
+            ctx: ctx,
+            parent: actionsRowRect,
+            defaultValue: "",
+            value: initialPresetName,
+            onChanged: null,
+            placeholder: LocalizationManager.Get("ui.render_config.preset_name_placeholder"),
+            icon: null,
+            id: "input_preset_name"
+        );
+        var inputLE = _presetNameInput.Rect.GetComponent<LayoutElement>() ?? _presetNameInput.Rect.gameObject.AddComponent<LayoutElement>();
+        inputLE.flexibleWidth = 1f;
+        inputLE.preferredHeight = 40f;
+
+        _savePresetButton = O5Factory.Button(
+            ctx: ctx,
+            parent: actionsRowRect,
+            onClick: () => OnSavePresetClicked(config),
+            text: LocalizationManager.Get("ui.render_config.preset_save"),
+            id: "btn_preset_save",
+            height: 40f
+        );
+        var saveLE = _savePresetButton.Rect.GetComponent<LayoutElement>() ?? _savePresetButton.Rect.gameObject.AddComponent<LayoutElement>();
+        saveLE.preferredWidth = 90f;
+        saveLE.flexibleWidth = 0f;
+        saveLE.preferredHeight = 40f;
+
+        var redTheme = ctx.Theme with
+        {
+            ObjectButton = ctx.Theme.SoftRed,
+            ButtonHover = ctx.Theme.SoftRed * 0.8f
+        };
+        var redCtx = new O5Context(
+            config: ctx.Config,
+            theme: redTheme,
+            fonts: ctx.Fonts,
+            tween: ctx.Tween
+        );
+        _deletePresetButton = O5Factory.Button(
+            ctx: redCtx,
+            parent: actionsRowRect,
+            onClick: () => OnDeletePresetClicked(config),
+            text: LocalizationManager.Get("ui.render_config.preset_delete"),
+            id: "btn_preset_delete",
+            height: 40f
+        );
+        var deleteLE = _deletePresetButton.Rect.GetComponent<LayoutElement>() ?? _deletePresetButton.Rect.gameObject.AddComponent<LayoutElement>();
+        deleteLE.preferredWidth = 90f;
+        deleteLE.flexibleWidth = 0f;
+        deleteLE.preferredHeight = 40f;
+
+        UpdateDeleteButtonState();
         
         // 1-3. Top section: 좌/우 컨테이너 1개씩으로 3행을 쌓는다 (중앙선 1개)
         var (topLeft, topRight) = CreateTwoColumnPanel(scrollContent, spacing: 8f, columnSpacing: 10f);
@@ -144,7 +265,7 @@ internal static class RenderConfigWindow
             format: "F3", clampMode: ClampMode.All,
 
             sliderFilter: value => Snap(renderFpsSnap, value),
-            inputFilter: null, onComplete: null, onChanged: val => { config.RenderFPS = val; },
+            inputFilter: null, onComplete: null, onChanged: val => { config.RenderFPS = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.render_fps"),
             id: "slider_render_fps", showFill: true
         );
@@ -155,7 +276,7 @@ internal static class RenderConfigWindow
             format: "F3", clampMode: ClampMode.All,
             
             sliderFilter: value => Snap(videoFpsSnap, value),
-            inputFilter: null, onComplete: null, onChanged: val => { config.VideoFPS = val; },
+            inputFilter: null, onComplete: null, onChanged: val => { config.VideoFPS = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.video_fps"),
             id: "slider_video_fps", showFill: true
         );
@@ -166,7 +287,7 @@ internal static class RenderConfigWindow
             format: "F0", clampMode: ClampMode.All,
             
             sliderFilter: value => Snap(renderWidthSnap, value), inputFilter: value => Math.Max(value, 2), 
-            onComplete: null, onChanged: val => { config.RenderWidth = (int)Math.Round(val); },
+            onComplete: null, onChanged: val => { config.RenderWidth = (int)Math.Round(val); MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.render_width"),
             id: "slider_render_width", showFill: true
         );
@@ -177,7 +298,7 @@ internal static class RenderConfigWindow
             format: "F0", clampMode: ClampMode.All,
             
             sliderFilter: value => Snap(renderHeightSnap, value), inputFilter: value => Math.Max(value, 2), 
-            onComplete: null, onChanged: val => { config.RenderHeight = (int)Math.Round(val); },
+            onComplete: null, onChanged: val => { config.RenderHeight = (int)Math.Round(val); MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.render_height"),
             id: "slider_render_height", showFill: true
         );
@@ -188,7 +309,7 @@ internal static class RenderConfigWindow
             format: "F3", clampMode: ClampMode.All,
             
             sliderFilter: null, inputFilter: null, 
-            onComplete: null, onChanged: val => { config.DelayAfterEnd = val; },
+            onComplete: null, onChanged: val => { config.DelayAfterEnd = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.delay_after_end"),
             id: "slider_delay_after_end", showFill: true
         );
@@ -198,7 +319,7 @@ internal static class RenderConfigWindow
             false, config.ShowJudgementText,
             LocalizationManager.Get("ui.render_config.show_judgement"),
             "toggle_show_judgement",
-            val => config.ShowJudgementText = val,
+            val => { config.ShowJudgementText = val; MarkConfigModified(); },
             generateLabel: false
         );
 
@@ -225,6 +346,7 @@ internal static class RenderConfigWindow
             {
                 config.VideoConfig.Codec = c;
                 UpdateVideoCodecUI(c, config);
+                MarkConfigModified();
             });
         
         _bitrateInput = CreateInputField(
@@ -233,7 +355,7 @@ internal static class RenderConfigWindow
             "30000", config.VideoConfig.Bitrate.ToString(),
             "input_bitrate", out _bitrateLabel,
             TMPro.TMP_InputField.CharacterValidation.Integer,
-            val => { if (int.TryParse(val, out var b) && b > 0) config.VideoConfig.Bitrate = b; }
+            val => { if (int.TryParse(val, out var b) && b > 0) config.VideoConfig.Bitrate = b; MarkConfigModified(); }
         );
         
         _qpInput = CreateInputField(
@@ -242,7 +364,7 @@ internal static class RenderConfigWindow
             "18", config.VideoConfig.QP.ToString(),
             "input_qp", out _qpLabel,
             TMPro.TMP_InputField.CharacterValidation.Integer,
-            val => { if (int.TryParse(val, out var qp) && qp >= 0) config.VideoConfig.QP = qp; }
+            val => { if (int.TryParse(val, out var qp) && qp >= 0) config.VideoConfig.QP = qp; MarkConfigModified(); }
         );
 
         var rateModes = (RateControlMode[])Enum.GetValues(typeof(RateControlMode));
@@ -256,6 +378,7 @@ internal static class RenderConfigWindow
             {
                 config.VideoConfig.RateControlMode = m;
                 UpdateRateControlUI(m);
+                MarkConfigModified();
             }
         );
         
@@ -265,7 +388,7 @@ internal static class RenderConfigWindow
             "50000", config.VideoConfig.MaxBitrate.ToString(),
             "input_max_bitrate", out _maxBitrateLabel,
             TMPro.TMP_InputField.CharacterValidation.Integer,
-            val => { if (int.TryParse(val, out var mb) && mb > 0) config.VideoConfig.MaxBitrate = mb; }
+            val => { if (int.TryParse(val, out var mb) && mb > 0) config.VideoConfig.MaxBitrate = mb; MarkConfigModified(); }
         );
         
         _forceSoftwareToggle = CreateToggleField(
@@ -273,7 +396,7 @@ internal static class RenderConfigWindow
             false, config.VideoConfig.ForceSoftwareEncoder,
             LocalizationManager.Get("ui.render_config.force_software"),
             "toggle_force_software",
-            val => config.VideoConfig.ForceSoftwareEncoder = val,
+            val => { config.VideoConfig.ForceSoftwareEncoder = val; MarkConfigModified(); },
             generateLabel: true
         );
 
@@ -283,7 +406,7 @@ internal static class RenderConfigWindow
             format: "F1", clampMode: ClampMode.All,
             
             sliderFilter: null, inputFilter: null, 
-            onComplete: null, onChanged: val => { config.VideoConfig.KeyframeInterval = val; },
+            onComplete: null, onChanged: val => { config.VideoConfig.KeyframeInterval = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.keyframe_interval"),
             id: "slider_keyframe_interval", showFill: true
         );
@@ -305,7 +428,7 @@ internal static class RenderConfigWindow
             true, config.AudioConfig.RenderAudio,
             LocalizationManager.Get("ui.render_config.render_audio"),
             "toggle_render_audio",
-            val => config.AudioConfig.RenderAudio = val,
+            val => { config.AudioConfig.RenderAudio = val; MarkConfigModified(); },
             generateLabel: false
         );
         
@@ -315,7 +438,7 @@ internal static class RenderConfigWindow
             format: "F0", clampMode: ClampMode.All,
 
             sliderFilter: value => Snap(audioBitrateSnap, value),
-            inputFilter: null, onComplete: null, onChanged: val => { config.AudioConfig.AudioBitrate = (int)Math.Round(val) * 1000; },
+            inputFilter: null, onComplete: null, onChanged: val => { config.AudioConfig.AudioBitrate = (int)Math.Round(val) * 1000; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.audio_bitrate"),
             id: "slider_audio_bitrate", showFill: true
         );
@@ -327,7 +450,7 @@ internal static class RenderConfigWindow
             2, config.AudioConfig.AudioChannels,
             channels, c => c == 1 ? "1 (Mono)" : "2 (Stereo)",
             "dd_channels",
-            c => config.AudioConfig.AudioChannels = c
+            c => { config.AudioConfig.AudioChannels = c; MarkConfigModified(); }
         );
 
         _sampleRateDropdown = CreateDropdownField(
@@ -336,7 +459,7 @@ internal static class RenderConfigWindow
             48000, config.AudioConfig.AudioSampleRate,
             CodecUtil.AvailableSampleRate[CodecUtil.AudioCodecMatch[config.VideoConfig.Codec]], r => $"{r/1000.0} kHz", 
             "dd_sample_rate",
-            r => config.AudioConfig.AudioSampleRate = r
+            r => { config.AudioConfig.AudioSampleRate = r; MarkConfigModified(); }
         );
 
         // 6. Global Settings (Collapsible Card)
@@ -425,7 +548,11 @@ internal static class RenderConfigWindow
             "mkv", config.AdvancedConfig.FileExtension,
             extensions, e => e,
             "dd_adv_file_extension",
-            e => { if (!string.IsNullOrEmpty(e)) config.AdvancedConfig.FileExtension = e; }
+            e =>
+            {
+                if (!string.IsNullOrEmpty(e)) config.AdvancedConfig.FileExtension = e;
+                MarkConfigModified();
+            }
         );
         
         _processAudioToggle = CreateToggleField(
@@ -433,7 +560,11 @@ internal static class RenderConfigWindow
             true, config.AdvancedConfig.ProcessAudio,
             LocalizationManager.Get("ui.render_config.process_audio"),
             "toggle_process_audio",
-            val => config.AdvancedConfig.ProcessAudio = val,
+            val =>
+            {
+                config.AdvancedConfig.ProcessAudio = val;
+                MarkConfigModified();
+            },
             generateLabel: false
         );
 
@@ -447,6 +578,7 @@ internal static class RenderConfigWindow
             {
                 if (int.TryParse(val, out var s)) config.AdvancedConfig.RandomSeed = s;
                 else if (string.IsNullOrWhiteSpace(val)) config.AdvancedConfig.RandomSeed = null;
+                MarkConfigModified();
             }
         );
         
@@ -455,7 +587,11 @@ internal static class RenderConfigWindow
             false, config.AdvancedConfig.NonTile,
             LocalizationManager.Get("ui.render_config.non_tile"),
             "toggle_non_tile",
-            val => config.AdvancedConfig.NonTile = val,
+            val =>
+            {
+                config.AdvancedConfig.NonTile = val;
+                MarkConfigModified();
+            },
             generateLabel: false
         );
         
@@ -482,6 +618,7 @@ internal static class RenderConfigWindow
                 _firePlanetPicker?.SetBlocked(!val);
                 config.AdvancedConfig.firePlanetColor = val ? _firePlanetPicker?.Value : null;
                 if (!val) _firePlanetPicker?.SetExpanded(false);
+                MarkConfigModified();
             },
             generateLabel: false
         );
@@ -493,7 +630,10 @@ internal static class RenderConfigWindow
             val =>
             {
                 if (_firePlanetToggle?.Value == true)
+                {
                     config.AdvancedConfig.firePlanetColor = val;
+                    MarkConfigModified();
+                }
             }
         );
         if (!config.AdvancedConfig.firePlanetColor.HasValue)
@@ -512,6 +652,7 @@ internal static class RenderConfigWindow
                 _icePlanetPicker?.SetBlocked(!val);
                 config.AdvancedConfig.icePlanetColor = val ? _icePlanetPicker?.Value : null;
                 if (!val) _icePlanetPicker?.SetExpanded(false);
+                MarkConfigModified();
             },
             generateLabel: false
         );
@@ -523,7 +664,10 @@ internal static class RenderConfigWindow
             val =>
             {
                 if (_icePlanetToggle?.Value == true)
+                {
                     config.AdvancedConfig.icePlanetColor = val;
+                    MarkConfigModified();
+                }
             }
         );
         if (!config.AdvancedConfig.icePlanetColor.HasValue)
@@ -542,6 +686,7 @@ internal static class RenderConfigWindow
                 _windPlanetPicker?.SetBlocked(!val);
                 config.AdvancedConfig.windPlanetColor = val ? _windPlanetPicker?.Value : null;
                 if (!val) _windPlanetPicker?.SetExpanded(false);
+                MarkConfigModified();
             },
             generateLabel: false
         );
@@ -553,7 +698,10 @@ internal static class RenderConfigWindow
             val =>
             {
                 if (_windPlanetToggle?.Value == true)
+                {
                     config.AdvancedConfig.windPlanetColor = val;
+                    MarkConfigModified();
+                }
             }
         );
         if (!config.AdvancedConfig.windPlanetColor.HasValue)
@@ -647,49 +795,19 @@ internal static class RenderConfigWindow
         
         UpdateVideoCodecUI(config.VideoConfig.Codec, config);
         UpdateRateControlUI(config.VideoConfig.RateControlMode, noAnimate: true);
+
+        if (!string.IsNullOrEmpty(GlobalSettings.Current.LastPresetName))
+        {
+            _presetDropdown?.Set(GlobalSettings.Current.LastPresetName, false);
+            _lastLoadedPresetName = GlobalSettings.Current.LastPresetName;
+            UpdateDeleteButtonState();
+        }
     }
 
     private static void TryGoRender()
     {
         var config = RenderManager.Instance.Configuration;
-
-        // Sync Video Config
-        if (_bitrateInput != null && int.TryParse(_bitrateInput.Value, out var bitrate) && bitrate > 0)
-        {
-            config.VideoConfig.Bitrate = bitrate;
-        }
-        if (_maxBitrateInput != null && int.TryParse(_maxBitrateInput.Value, out var maxBitrate) && maxBitrate > 0)
-        {
-            config.VideoConfig.MaxBitrate = maxBitrate;
-        }
-        if (_qpInput != null && int.TryParse(_qpInput.Value, out var qp) && qp >= 0)
-        {
-            config.VideoConfig.QP = qp;
-        }
-
-        // Sync Advanced Config
-        if (_randomSeedInput != null)
-        {
-            if (int.TryParse(_randomSeedInput.Value, out var seed))
-            {
-                config.AdvancedConfig.RandomSeed = seed;
-            }
-            else if (string.IsNullOrWhiteSpace(_randomSeedInput.Value))
-            {
-                config.AdvancedConfig.RandomSeed = null;
-            }
-        }
-
-        // Sync Planet Colors
-        config.AdvancedConfig.firePlanetColor = (_firePlanetToggle?.Value == true && _firePlanetPicker != null)
-            ? _firePlanetPicker.Value
-            : null;
-        config.AdvancedConfig.icePlanetColor = (_icePlanetToggle?.Value == true && _icePlanetPicker != null)
-            ? _icePlanetPicker.Value
-            : null;
-        config.AdvancedConfig.windPlanetColor = (_windPlanetToggle?.Value == true && _windPlanetPicker != null)
-            ? _windPlanetPicker.Value
-            : null;
+        SyncUItoConfig(config);
 
         // Sync Output Directory
         if (_outputDirInput != null)
@@ -725,6 +843,250 @@ internal static class RenderConfigWindow
         new RenderSession().Start(config, RenderManager.Instance.levelPath);
     }
 
+    private static void SyncUItoConfig(RenderConfig target)
+    {
+        if (_renderFpsSlider != null) target.RenderFPS = _renderFpsSlider.Value;
+        if (_videoFPSSlider != null) target.VideoFPS = _videoFPSSlider.Value;
+        if (_renderWidthSlider != null) target.RenderWidth = (int)Math.Round(_renderWidthSlider.Value);
+        if (_renderHeightSlider != null) target.RenderHeight = (int)Math.Round(_renderHeightSlider.Value);
+        if (_delayAfterEndSlider != null) target.DelayAfterEnd = _delayAfterEndSlider.Value;
+        if (_showJudgementToggle != null) target.ShowJudgementText = _showJudgementToggle.Value;
+
+        if (_codecDropdown != null) target.VideoConfig.Codec = _codecDropdown.Value;
+        if (_rateControlDropdown != null) target.VideoConfig.RateControlMode = _rateControlDropdown.Value;
+
+        if (_bitrateInput != null && int.TryParse(_bitrateInput.Value, out var bitrate) && bitrate > 0)
+        {
+            target.VideoConfig.Bitrate = bitrate;
+        }
+        if (_maxBitrateInput != null && int.TryParse(_maxBitrateInput.Value, out var maxBitrate) && maxBitrate > 0)
+        {
+            target.VideoConfig.MaxBitrate = maxBitrate;
+        }
+        if (_qpInput != null && int.TryParse(_qpInput.Value, out var qp) && qp >= 0)
+        {
+            target.VideoConfig.QP = qp;
+        }
+        if (_keyframeIntervalSlider != null) target.VideoConfig.KeyframeInterval = _keyframeIntervalSlider.Value;
+        if (_forceSoftwareToggle != null) target.VideoConfig.ForceSoftwareEncoder = _forceSoftwareToggle.Value;
+
+        if (_renderAudioToggle != null) target.AudioConfig.RenderAudio = _renderAudioToggle.Value;
+        if (_sampleRateDropdown != null) target.AudioConfig.AudioSampleRate = _sampleRateDropdown.Value;
+        if (_channelsDropdown != null) target.AudioConfig.AudioChannels = _channelsDropdown.Value;
+        if (_audioBitrateSlider != null) target.AudioConfig.AudioBitrate = (int)Math.Round(_audioBitrateSlider.Value) * 1000;
+
+        if (_fileExtensionDropdown != null && !string.IsNullOrEmpty(_fileExtensionDropdown.Value))
+            target.AdvancedConfig.FileExtension = _fileExtensionDropdown.Value;
+
+        if (_randomSeedInput != null)
+        {
+            if (int.TryParse(_randomSeedInput.Value, out var seed))
+            {
+                target.AdvancedConfig.RandomSeed = seed;
+            }
+            else if (string.IsNullOrWhiteSpace(_randomSeedInput.Value))
+            {
+                target.AdvancedConfig.RandomSeed = null;
+            }
+        }
+        if (_processAudioToggle != null) target.AdvancedConfig.ProcessAudio = _processAudioToggle.Value;
+        if (_nonTileToggle != null) target.AdvancedConfig.NonTile = _nonTileToggle.Value;
+
+        // Planet Colors
+        target.AdvancedConfig.firePlanetColor = (_firePlanetToggle?.Value == true && _firePlanetPicker != null)
+            ? _firePlanetPicker.Value
+            : null;
+        target.AdvancedConfig.icePlanetColor = (_icePlanetToggle?.Value == true && _icePlanetPicker != null)
+            ? _icePlanetPicker.Value
+            : null;
+        target.AdvancedConfig.windPlanetColor = (_windPlanetToggle?.Value == true && _windPlanetPicker != null)
+            ? _windPlanetPicker.Value
+            : null;
+    }
+
+    private static string CustomPresetLabel => LocalizationManager.Get("ui.render_config.preset_custom");
+
+    private static void MarkConfigModified()
+    {
+        if (_presetDropdown == null) return;
+        var customLabel = CustomPresetLabel;
+        if (_presetDropdown.Value == customLabel) return;
+
+        var currentValues = _presetDropdown.Values;
+        if (!currentValues.Contains(customLabel))
+        {
+            var list = new List<string>(currentValues);
+            list.Insert(0, customLabel);
+            _presetDropdown.SetValues(list);
+        }
+
+        _presetDropdown.Set(customLabel, false);
+        UpdateDeleteButtonState();
+    }
+
+    private static void OnPresetSelected(string? selectedName, RenderConfig config)
+    {
+        if (string.IsNullOrEmpty(selectedName) || selectedName == CustomPresetLabel) return;
+        var preset = PresetManager.GetPresets().FirstOrDefault(p => string.Equals(p.Name, selectedName, StringComparison.OrdinalIgnoreCase));
+        if (preset == null) return;
+
+        GlobalSettings.Current.LastPresetName = preset.Name;
+        GlobalSettings.Save();
+        _lastLoadedPresetName = preset.Name;
+
+        config.CopyFrom(preset.Config);
+        ApplyConfigToUI(config);
+
+        _presetNameInput?.Set(preset.Name, false);
+
+        if (_presetDropdown != null && _presetDropdown.Values.Contains(CustomPresetLabel))
+        {
+            var cleaned = _presetDropdown.Values.Where(v => v != CustomPresetLabel).ToList();
+            _presetDropdown.SetValues(cleaned);
+            _presetDropdown.Set(preset.Name, false);
+        }
+
+        UpdateDeleteButtonState();
+    }
+
+    private static void OnSavePresetClicked(RenderConfig config)
+    {
+        SyncUItoConfig(config);
+
+        var name = _presetNameInput?.Value?.Trim();
+        if (string.IsNullOrWhiteSpace(name) || name == CustomPresetLabel)
+        {
+            CommonWarningDialogUI.ShowDialog(
+                LocalizationManager.Get("ui.render_config.validation_title"),
+                LocalizationManager.Get("ui.render_config.preset_name_empty"),
+                new DialogButton(LocalizationManager.Get("ui.render_config.confirm"), () => { })
+            );
+            return;
+        }
+
+        bool isCurrentPreset = !string.IsNullOrEmpty(_lastLoadedPresetName) &&
+                               string.Equals(_lastLoadedPresetName, name, StringComparison.OrdinalIgnoreCase);
+
+        var existing = PresetManager.GetPresets().FirstOrDefault(p => string.Equals(p.Name, name, StringComparison.OrdinalIgnoreCase));
+        if (existing != null && !isCurrentPreset)
+        {
+            CommonWarningDialogUI.ShowDialog(
+                LocalizationManager.Get("ui.render_config.preset_overwrite_title"),
+                LocalizationManager.Get("ui.render_config.preset_overwrite_desc", name),
+                new DialogButton(
+                    LocalizationManager.Get("ui.render_config.confirm"),
+                    () => DoSavePreset(name, config)
+                ),
+                new DialogButton(
+                    LocalizationManager.Get("ui.render_config.cancel"),
+                    () => { }
+                )
+            );
+        }
+        else
+        {
+            DoSavePreset(name, config);
+        }
+    }
+
+    private static void DoSavePreset(string name, RenderConfig config)
+    {
+        PresetManager.SavePreset(name, config);
+        GlobalSettings.Current.LastPresetName = name;
+        GlobalSettings.Save();
+        _lastLoadedPresetName = name;
+        ReloadPresetDropdown(selectName: name);
+    }
+
+    private static void OnDeletePresetClicked(RenderConfig config)
+    {
+        var targetPresetName = _presetDropdown?.Value;
+        if (string.IsNullOrWhiteSpace(targetPresetName) || targetPresetName == CustomPresetLabel)
+        {
+            targetPresetName = _lastLoadedPresetName;
+            if (string.IsNullOrWhiteSpace(targetPresetName) || targetPresetName == CustomPresetLabel)
+            {
+                return;
+            }
+        }
+
+        var ctx = RendererUIManager.Context;
+        CommonWarningDialogUI.ShowDialog(
+            LocalizationManager.Get("ui.render_config.preset_delete_title"),
+            LocalizationManager.Get("ui.render_config.preset_delete_desc", targetPresetName),
+            new DialogButton(
+                LocalizationManager.Get("ui.render_config.confirm"),
+                () => DoDeletePreset(targetPresetName, config),
+                ctx.Theme.SoftRed
+            ),
+            new DialogButton(
+                LocalizationManager.Get("ui.render_config.cancel"),
+                () => { }
+            )
+        );
+    }
+
+    private static void DoDeletePreset(string name, RenderConfig config)
+    {
+        PresetManager.DeletePreset(name);
+        var presets = PresetManager.GetPresets();
+        var fallbackName = presets.Count > 0 ? presets[0].Name : "";
+        GlobalSettings.Current.LastPresetName = fallbackName;
+        GlobalSettings.Save();
+        _lastLoadedPresetName = fallbackName;
+
+        ReloadPresetDropdown(selectName: fallbackName);
+
+        var fallbackPreset = presets.FirstOrDefault(p => string.Equals(p.Name, fallbackName, StringComparison.OrdinalIgnoreCase));
+        if (fallbackPreset != null)
+        {
+            config.CopyFrom(fallbackPreset.Config);
+            ApplyConfigToUI(config);
+            _presetNameInput?.Set(fallbackPreset.Name, false);
+        }
+    }
+
+    private static void ReloadPresetDropdown(string? selectName = null)
+    {
+        var presets = PresetManager.GetPresets();
+        var names = presets.Select(p => p.Name).ToList();
+        if (names.Count == 0)
+        {
+            _presetDropdown?.SetValues(new List<string> { CustomPresetLabel });
+            _presetDropdown?.Set(CustomPresetLabel, false);
+            _lastLoadedPresetName = null;
+            UpdateDeleteButtonState();
+            return;
+        }
+
+        _presetDropdown?.SetValues(names);
+
+        var targetName = selectName;
+        if (string.IsNullOrEmpty(targetName) || !names.Contains(targetName))
+        {
+            targetName = names[0];
+        }
+
+        _presetDropdown?.Set(targetName, false);
+        _lastLoadedPresetName = targetName;
+        UpdateDeleteButtonState();
+    }
+
+    private static void UpdateDeleteButtonState(string? presetName = null)
+    {
+        var targetName = presetName ?? _presetDropdown?.Value;
+        if (targetName == CustomPresetLabel)
+        {
+            targetName = _lastLoadedPresetName;
+        }
+
+        bool canDelete = !string.IsNullOrEmpty(targetName) &&
+                         targetName != CustomPresetLabel &&
+                         PresetManager.GetPresets().Any(p => string.Equals(p.Name, targetName, StringComparison.OrdinalIgnoreCase));
+
+        _deletePresetButton?.SetBlocked(!canDelete);
+    }
+
     private static void ShowValidationError(string message)
     {
         Melon<RenderMod>.Logger.Error(message);