diff --git a/apps/claude-trace/README.md b/apps/claude-trace/README.md
index c07ac93..d069843 100644
--- a/apps/claude-trace/README.md
+++ b/apps/claude-trace/README.md
@@ -17,6 +17,9 @@ claude-trace
 # Include all API requests (by default, only substantial conversations are logged)
 claude-trace --include-all-requests
 
+# Skip HTML generation (JSONL only, saves ~60% disk space)
+claude-trace --no-html
+
 # Run Claude with specific arguments
 claude-trace --run-with chat --model sonnet-3.5
 
diff --git a/apps/claude-trace/src/cli.ts b/apps/claude-trace/src/cli.ts
index ad13e33..6dd24f4 100644
--- a/apps/claude-trace/src/cli.ts
+++ b/apps/claude-trace/src/cli.ts
@@ -35,6 +35,7 @@ ${colors.yellow}OPTIONS:${colors.reset}
   --run-with         Pass all following arguments to Claude process
   --include-all-requests Include all requests made through fetch, otherwise only requests to v1/messages with more than 2 messages in the context
   --no-open          Don't open generated HTML file in browser
+  --no-html          Skip HTML generation (JSONL only)
   --log              Specify custom log file base name (without extension)
   --claude-path      Specify custom path to Claude binary
   --help, -h         Show this help message
@@ -234,6 +235,7 @@ async function runClaudeWithInterception(
 	openInBrowser: boolean = false,
 	customClaudePath?: string,
 	logBaseName?: string,
+	generateHTML: boolean = true,
 ): Promise<void> {
 	log("Claude Trace", "blue");
 	log("Starting Claude with traffic logging", "yellow");
@@ -257,6 +259,7 @@ async function runClaudeWithInterception(
 			NODE_OPTIONS: "--no-deprecation",
 			CLAUDE_TRACE_INCLUDE_ALL_REQUESTS: includeAllRequests ? "true" : "false",
 			CLAUDE_TRACE_OPEN_BROWSER: openInBrowser ? "true" : "false",
+			CLAUDE_TRACE_GENERATE_HTML: generateHTML ? "true" : "false",
 			...(logBaseName ? { CLAUDE_TRACE_LOG_NAME: logBaseName } : {}),
 		},
 		stdio: "inherit",
@@ -473,6 +476,9 @@ async function main(): Promise<void> {
 	// Check for no-open flag (inverted logic - open by default)
 	const openInBrowser = !claudeTraceArgs.includes("--no-open");
 
+	// Check for no-html flag (inverted logic - generate HTML by default)
+	const generateHTML = !claudeTraceArgs.includes("--no-html");
+
 	// Check for custom Claude path
 	let customClaudePath: string | undefined;
 	const claudePathIndex = claudeTraceArgs.indexOf("--claude-path");
@@ -525,7 +531,7 @@ async function main(): Promise<void> {
 	}
 
 	// Scenario 1: No args (or claude with args) -> launch claude with interception
-	await runClaudeWithInterception(claudeArgs, includeAllRequests, openInBrowser, customClaudePath, logBaseName);
+	await runClaudeWithInterception(claudeArgs, includeAllRequests, openInBrowser, customClaudePath, logBaseName, generateHTML);
 }
 
 main().catch((error) => {
diff --git a/apps/claude-trace/src/interceptor.ts b/apps/claude-trace/src/interceptor.ts
index 111c87f..64780d0 100644
--- a/apps/claude-trace/src/interceptor.ts
+++ b/apps/claude-trace/src/interceptor.ts
@@ -21,9 +21,12 @@ export class ClaudeTrafficLogger {
 	private htmlGenerator: HTMLGenerator;
 
 	constructor(config: InterceptorConfig = {}) {
+		// Check environment variable for HTML generation (defaults to true)
+		const enableHTMLFromEnv = process.env.CLAUDE_TRACE_GENERATE_HTML !== "false";
+
 		this.config = {
 			logDirectory: ".claude-trace",
-			enableRealTimeHTML: true,
+			enableRealTimeHTML: enableHTMLFromEnv,
 			logLevel: "info",
 			...config,
 		};
@@ -51,7 +54,9 @@ export class ClaudeTrafficLogger {
 		// Output the actual filenames with absolute paths
 		console.log(`Logs will be written to:`);
 		console.log(`  JSONL: ${path.resolve(this.logFile)}`);
-		console.log(`  HTML:  ${path.resolve(this.htmlFile)}`);
+		if (this.config.enableRealTimeHTML) {
+			console.log(`  HTML:  ${path.resolve(this.htmlFile)}`);
+		}
 	}
 
 	private isClaudeAPI(url: string | URL): boolean {