release: v0.3.18 — fix welcome banner polluting stdout (fixes #59)

cloakserve bypasses the wrapper and launches Chrome directly, missing
the GPU blocklist fix from 1380c86. Fixes #58.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug Report
+about: Report a bug or detection issue
+labels: bug
+---
+
+Description: <!-- What happened? What did you expect? -->
+
+CloakBrowser version: <!-- pip show cloakbrowser / npm list cloakbrowser -->
+
+Wrapper: <!-- Python or JavaScript -->
+
+Environment: <!-- OS, Docker y/n, base image, architecture -->
+
+Launch options:
+
+
+Tested with a different IP or proxy? <!-- Yes (same result) / Yes (works with different IP) / No -->
+
+Works outside Docker / on host machine? <!-- Yes / No / Not using Docker -->
+
+Steps to reproduce:
+
+
+Error output / screenshots:
+
+Dockerfile (if applicable):
+
+Additional notes:

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: true

CHANGELOG.md

@@ -6,6 +6,13 @@ Changes are tagged: **[wrapper]** for Python/JS wrapper, **[binary]** for Chromi
 
 ---
 
+## [0.3.18] — 2026-03-15
+
+- **[wrapper]** Fix welcome banner printing to stdout — now writes to stderr so it won't corrupt JSON output in programmatic usage (fixes #59)
+- **[wrapper]** Fix `cloakserve` Docker WebGL by adding `--ignore-gpu-blocklist` flag
+- **[docs]** Add Crawlee integration example
+- **[meta]** Add GitHub issue template for bug reports
+
 ## [0.3.17] — 2026-03-15
 
 - **[binary]** Windows x64 build upgraded to 145.0.7632.159.7 — 33 source-level C++ patches, matching Linux

README.md

@@ -631,6 +631,7 @@ browser = await launch_async(args=["--remote-debugging-port=9242"])
 |-----------|-------|----------|---------|
 | [browser-use](https://github.com/browser-use/browser-use) | 70K | Python | [`browser_use_example.py`](examples/integrations/browser_use_example.py) |
 | [Crawl4AI](https://github.com/unclecode/crawl4ai) | 58K | Python | [`crawl4ai_example.py`](examples/integrations/crawl4ai_example.py) |
+| [Crawlee](https://github.com/apify/crawlee-python) | 8.6K | Python | [`crawlee_example.py`](examples/integrations/crawlee_example.py) |
 | [Scrapling](https://github.com/D4Vinci/Scrapling) | 21K | Python | [`scrapling_example.py`](examples/integrations/scrapling_example.py) |
 | [Stagehand](https://github.com/browserbase/stagehand) | 21K | TypeScript | [`stagehand.ts`](js/examples/stagehand.ts) |
 | [LangChain](https://github.com/langchain-ai/langchain) | 100K+ | Python | [`langchain_loader.py`](examples/integrations/langchain_loader.py) |

bin/cloakserve

@@ -33,6 +33,9 @@ chrome_args = [
     "--disable-popup-blocking",
     "--disable-background-networking",
     "--metrics-recording-only",
+    # GPU blocklist bypass: Chromium blocks WebGL on software GPUs in
+    # Docker/Xvfb. Without this, WebGL vendor/renderer spoofing fails. #58
+    "--ignore-gpu-blocklist",
 ] + get_default_stealth_args() + sys.argv[1:]
 
 chrome = subprocess.Popen(chrome_args)

cloakbrowser/_version.py

@@ -1 +1 @@
-__version__ = "0.3.17"
+__version__ = "0.3.18"

cloakbrowser/download.py

@@ -12,6 +12,7 @@ import os
 import platform
 import stat
 import subprocess
+import sys
 import tarfile
 import tempfile
 import threading
@@ -55,14 +56,14 @@ def _show_welcome() -> None:
     marker = get_cache_dir() / ".welcome_shown"
     if marker.exists():
         return
-    print()
+    sys.stderr.write("\n")
-    print("  CloakBrowser — stealth Chromium for automation")
+    sys.stderr.write("  CloakBrowser — stealth Chromium for automation\n")
-    print("  https://github.com/CloakHQ/CloakBrowser")
+    sys.stderr.write("  https://github.com/CloakHQ/CloakBrowser\n")
-    print()
+    sys.stderr.write("\n")
-    print("  Issues?  https://github.com/CloakHQ/CloakBrowser/issues")
+    sys.stderr.write("  Issues?  https://github.com/CloakHQ/CloakBrowser/issues\n")
-    print("  Donate?  https://ko-fi.com/cloakhq")
+    sys.stderr.write("  Donate?  https://ko-fi.com/cloakhq\n")
-    print("  Star us if CloakBrowser helps your project!")
+    sys.stderr.write("  Star us if CloakBrowser helps your project!\n")
-    print()
+    sys.stderr.write("\n")
     try:
         marker.parent.mkdir(parents=True, exist_ok=True)
         marker.write_text("")

examples/integrations/crawlee_example.py

@@ -0,0 +1,72 @@
+"""Crawlee + CloakBrowser: stealth web crawling with PlaywrightCrawler.
+
+Uses a custom BrowserPlugin to swap Crawlee's default Chromium
+for CloakBrowser's patched binary with source-level fingerprint patches.
+
+Requires: pip install cloakbrowser "crawlee[playwright]"
+"""
+
+import asyncio
+
+from cloakbrowser.config import IGNORE_DEFAULT_ARGS, get_default_stealth_args
+from cloakbrowser.download import ensure_binary
+from typing_extensions import override
+
+from crawlee.browsers import (
+    BrowserPool,
+    PlaywrightBrowserController,
+    PlaywrightBrowserPlugin,
+)
+from crawlee.crawlers import PlaywrightCrawler, PlaywrightCrawlingContext
+
+
+class CloakBrowserPlugin(PlaywrightBrowserPlugin):
+    """Browser plugin that uses CloakBrowser's patched Chromium,
+    but otherwise keeps the functionality of PlaywrightBrowserPlugin.
+    """
+
+    @override
+    async def new_browser(self) -> PlaywrightBrowserController:
+        if not self._playwright:
+            raise RuntimeError('Playwright browser plugin is not initialized.')
+
+        binary_path = ensure_binary()
+        stealth_args = get_default_stealth_args()
+
+        # Merge CloakBrowser stealth args with any user-provided launch options.
+        launch_options = dict(self._browser_launch_options)
+        launch_options.pop('executable_path', None)
+        launch_options.pop('chromium_sandbox', None)
+        existing_args = list(launch_options.pop('args', []))
+        launch_options['args'] = [*existing_args, *stealth_args]
+
+        return PlaywrightBrowserController(
+            browser=await self._playwright.chromium.launch(
+                executable_path=binary_path,
+                ignore_default_args=IGNORE_DEFAULT_ARGS,
+                **launch_options,
+            ),
+            max_open_pages_per_browser=1,
+            # CloakBrowser handles fingerprints at the binary level.
+            header_generator=None,
+        )
+
+
+async def main() -> None:
+    crawler = PlaywrightCrawler(
+        max_requests_per_crawl=10,
+        browser_pool=BrowserPool(plugins=[CloakBrowserPlugin()]),
+    )
+
+    @crawler.router.default_handler
+    async def request_handler(context: PlaywrightCrawlingContext) -> None:
+        context.log.info(f'Processing {context.request.url} ...')
+        title = await context.page.title()
+        await context.push_data({'url': context.request.url, 'title': title})
+        await context.enqueue_links()
+
+    await crawler.run(['https://example.com'])
+
+
+if __name__ == '__main__':
+    asyncio.run(main())

js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "cloakbrowser",
-  "version": "0.3.17",
+  "version": "0.3.18",
   "description": "Stealth Chromium that passes every bot detection test. Drop-in Playwright/Puppeteer replacement with source-level fingerprint patches.",
   "type": "module",
   "main": "dist/index.js",

js/src/download.ts

@@ -146,14 +146,14 @@ export async function checkForUpdate(): Promise<string | null> {
 function showWelcome(): void {
   const marker = path.join(getCacheDir(), ".welcome_shown");
   if (fs.existsSync(marker)) return;
-  console.log();
+  console.error();
-  console.log("  CloakBrowser — stealth Chromium for automation");
+  console.error("  CloakBrowser — stealth Chromium for automation");
-  console.log("  https://github.com/CloakHQ/CloakBrowser");
+  console.error("  https://github.com/CloakHQ/CloakBrowser");
-  console.log();
+  console.error();
-  console.log("  Issues?  https://github.com/CloakHQ/CloakBrowser/issues");
+  console.error("  Issues?  https://github.com/CloakHQ/CloakBrowser/issues");
-  console.log("  Donate?  https://ko-fi.com/cloakhq");
+  console.error("  Donate?  https://ko-fi.com/cloakhq");
-  console.log("  Star us if CloakBrowser helps your project!");
+  console.error("  Star us if CloakBrowser helps your project!");
-  console.log();
+  console.error();
   try {
     fs.mkdirSync(getCacheDir(), { recursive: true });
     fs.writeFileSync(marker, "");