diff --git a/esbuild.config.mjs b/esbuild.config.mjs
index 5d1c9e9..277d423 100644
--- a/esbuild.config.mjs
+++ b/esbuild.config.mjs
@@ -43,10 +43,10 @@ const context = await esbuild.context({
 	logLevel: "info",
 	sourcemap: prod ? false : "inline",
 	treeShaking: true,
-	minifyWhitespace: prod,
-	minifyIdentifiers: prod,
-	minifySyntax: prod,
-	legalComments: 'inline',
+	// Production builds must be minified (Obsidian dev docs: Optimize plugin load time)
+	minify: prod,
+	// Remove all other comments; banner remains
+	legalComments: 'none',
 	outfile: path.join(outDir, "main.js"),
 });
 
diff --git a/src/core/audio/AudioWorkletSource.ts b/src/core/audio/AudioWorkletSource.ts
index 4d2cfa6..cca8b6f 100644
--- a/src/core/audio/AudioWorkletSource.ts
+++ b/src/core/audio/AudioWorkletSource.ts
@@ -1,111 +1,9 @@
 /**
- * AudioWorklet source code as a string
- * This allows us to create a blob URL for loading in restricted environments
+ * AudioWorklet source code as a single-line string with comments stripped
+ * to keep bundled output comment-free (except the esbuild banner).
  */
-
-export const AUDIO_WORKLET_SOURCE = `
-// AudioWorkletProcessor for real-time audio processing
-class AudioProcessorWorklet extends AudioWorkletProcessor {
-    constructor() {
-        super();
-
-        this.bufferSize = 4096;
-        this.audioBuffer = [];
-        this.isRecording = false;
-
-        // Listen for messages from main thread
-        this.port.onmessage = (event) => {
-            this.handleMessage(event.data);
-        };
-    }
-
-    /**
-     * Handle messages from main thread
-     */
-    handleMessage(data) {
-        switch (data.type) {
-            case 'start':
-                this.isRecording = true;
-                this.audioBuffer = [];
-                break;
-
-            case 'stop':
-                this.isRecording = false;
-                // Send any remaining buffered audio
-                if (this.audioBuffer.length > 0) {
-                    this.sendAudioData();
-                }
-                break;
-
-            case 'configure':
-                if (data.bufferSize) {
-                    this.bufferSize = data.bufferSize;
-                }
-                break;
-        }
-    }
-
-    /**
-     * Process audio - called for each render quantum (128 samples)
-     */
-    process(inputs, outputs, parameters) {
-        const input = inputs[0];
-
-        if (!this.isRecording || !input || input.length === 0) {
-            return true; // Keep processor alive
-        }
-
-        // Get the first channel
-        const channelData = input[0];
-        if (!channelData || channelData.length === 0) {
-            return true;
-        }
-
-        // Buffer the audio data
-        this.audioBuffer.push(new Float32Array(channelData));
-
-        // Check if we've accumulated enough data
-        const totalSamples = this.audioBuffer.reduce((sum, buffer) => sum + buffer.length, 0);
-        if (totalSamples >= this.bufferSize) {
-            this.sendAudioData();
-        }
-
-        return true; // Keep processor alive
-    }
-
-    /**
-     * Send accumulated audio data to main thread
-     */
-    sendAudioData() {
-        if (this.audioBuffer.length === 0) {
-            return;
-        }
-
-        // Combine all buffers into one
-        const totalLength = this.audioBuffer.reduce((sum, buffer) => sum + buffer.length, 0);
-        const combinedBuffer = new Float32Array(totalLength);
-
-        let offset = 0;
-        for (const buffer of this.audioBuffer) {
-            combinedBuffer.set(buffer, offset);
-            offset += buffer.length;
-        }
-
-        // Send to main thread
-        this.port.postMessage({
-            type: 'audio',
-            data: combinedBuffer,
-            timestamp: currentTime
-        });
-
-        // Clear the buffer
-        this.audioBuffer = [];
-    }
-}
-
-// Register the processor
-registerProcessor('audio-processor-worklet', AudioProcessorWorklet);
-`;
+export const AUDIO_WORKLET_SOURCE =
+`class AudioProcessorWorklet extends AudioWorkletProcessor{constructor(){super();this.bufferSize=4096;this.audioBuffer=[];this.isRecording=!1;this.port.onmessage=e=>{this.handleMessage(e.data)}}handleMessage(e){switch(e.type){case\"start\":this.isRecording=!0,this.audioBuffer=[];break;case\"stop\":this.isRecording=!1,this.audioBuffer.length>0&&this.sendAudioData();break;case\"configure\":e.bufferSize&&(this.bufferSize=e.bufferSize);break}}process(e){const t=e[0];if(!this.isRecording||!t||t.length===0)return!0;const s=t[0];if(!s||s.length===0)return!0;this.audioBuffer.push(new Float32Array(s));const r=this.audioBuffer.reduce((n,o)=>n+o.length,0);return r>=this.bufferSize&&this.sendAudioData(),!0}sendAudioData(){if(this.audioBuffer.length===0)return;const e=this.audioBuffer.reduce((t,s)=>t+s.length,0),t=new Float32Array(e);let s=0;for(const r of this.audioBuffer)t.set(r,s),s+=r.length;this.port.postMessage({type:\"audio\",data:t,timestamp:currentTime}),this.audioBuffer=[]}}registerProcessor(\"audio-processor-worklet\",AudioProcessorWorklet);`;
 
 /**
  * Create a blob URL for the AudioWorklet
diff --git a/src/core/audio/VADProcessor.ts b/src/core/audio/VADProcessor.ts
index fb9b47f..911442c 100644
--- a/src/core/audio/VADProcessor.ts
+++ b/src/core/audio/VADProcessor.ts
@@ -114,22 +114,21 @@ export class VADProcessor extends Disposable {
         // fvad.js の内容を読み込んで評価（プラグインルートから）
         const fvadJsPath = this.getPluginAssetPath('fvad.js');
         const fvadJsContent = await this.readPluginTextAsset('fvad.js');
+        const sanitizedFvadJsContent = fvadJsContent
+            // Remove block comments
+            .replace(/\/\*[\s\S]*?\*\//g, '')
+            // Remove line comments
+            .replace(/^\s*\/\/.*$/gm, '');
 
         // モジュールを評価するための一時的な環境を作成
         return new Promise((resolve, reject) => {
             // スクリプトタグを作成
             const script = document.createElement('script');
             script.type = 'module';
-            script.textContent = `
-                // import.meta.url のポリフィル
-                const importMeta = { url: 'file:///${fvadJsPath}' };
-
-                // fvad モジュールを定義
-                ${fvadJsContent}
-
-                // グローバルに公開
-                window.__fvadModule = fvad;
-            `;
+            script.textContent =
+                `const importMeta={url:'file:///${fvadJsPath}'};` +
+                `${sanitizedFvadJsContent}` +
+                `window.__fvadModule=fvad;`;
 
             // エラーハンドリング
             script.onerror = (error) => {