diff --git a/archivebox/plugins/chrome/chrome_utils.js b/archivebox/plugins/chrome/chrome_utils.js
index 333cf418..fa331ee5 100755
--- a/archivebox/plugins/chrome/chrome_utils.js
+++ b/archivebox/plugins/chrome/chrome_utils.js
@@ -45,6 +45,17 @@ function getEnvBool(name, defaultValue = false) {
     return defaultValue;
 }
 
+/**
+ * Get integer environment variable.
+ * @param {string} name - Environment variable name
+ * @param {number} [defaultValue=0] - Default value if not set
+ * @returns {number} - Integer value
+ */
+function getEnvInt(name, defaultValue = 0) {
+    const val = parseInt(getEnv(name, String(defaultValue)), 10);
+    return isNaN(val) ? defaultValue : val;
+}
+
 /**
  * Parse resolution string into width/height.
  * @param {string} resolution - Resolution string like "1440,2000"
@@ -1004,6 +1015,7 @@ module.exports = {
     // Environment helpers
     getEnv,
     getEnvBool,
+    getEnvInt,
     parseResolution,
     // PID file management
     writePidWithMtime,
diff --git a/archivebox/plugins/chrome/on_Snapshot__20_chrome_tab.bg.js b/archivebox/plugins/chrome/on_Snapshot__20_chrome_tab.bg.js
index f8b740f7..537ec5bf 100755
--- a/archivebox/plugins/chrome/on_Snapshot__20_chrome_tab.bg.js
+++ b/archivebox/plugins/chrome/on_Snapshot__20_chrome_tab.bg.js
@@ -25,12 +25,18 @@
 const fs = require('fs');
 const path = require('path');
 const { spawn } = require('child_process');
-const http = require('http');
 // Add NODE_MODULES_DIR to module resolution paths if set
 if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 
 const puppeteer = require('puppeteer-core');
-const { findChromium } = require('./chrome_utils.js');
+const {
+    findChromium,
+    getEnv,
+    getEnvBool,
+    parseResolution,
+    findFreePort,
+    waitForDebugPort,
+} = require('./chrome_utils.js');
 
 // Extractor metadata
 const PLUGIN_NAME = 'chrome_tab';
@@ -50,18 +56,6 @@ function parseArgs() {
     return args;
 }
 
-// Get environment variable with default
-function getEnv(name, defaultValue = '') {
-    return (process.env[name] || defaultValue).trim();
-}
-
-function getEnvBool(name, defaultValue = false) {
-    const val = getEnv(name, '').toLowerCase();
-    if (['true', '1', 'yes', 'on'].includes(val)) return true;
-    if (['false', '0', 'no', 'off'].includes(val)) return false;
-    return defaultValue;
-}
-
 // Cleanup handler for SIGTERM - close this snapshot's tab
 async function cleanup() {
     try {
@@ -91,63 +85,6 @@ async function cleanup() {
 process.on('SIGTERM', cleanup);
 process.on('SIGINT', cleanup);
 
-// Parse resolution string
-function parseResolution(resolution) {
-    const [width, height] = resolution.split(',').map(x => parseInt(x.trim(), 10));
-    return { width: width || 1440, height: height || 2000 };
-}
-
-// Find a free port
-function findFreePort() {
-    return new Promise((resolve, reject) => {
-        const server = require('net').createServer();
-        server.unref();
-        server.on('error', reject);
-        server.listen(0, () => {
-            const port = server.address().port;
-            server.close(() => resolve(port));
-        });
-    });
-}
-
-// Wait for Chrome's DevTools port to be ready
-function waitForDebugPort(port, timeout = 30000) {
-    const startTime = Date.now();
-
-    return new Promise((resolve, reject) => {
-        const tryConnect = () => {
-            if (Date.now() - startTime > timeout) {
-                reject(new Error(`Timeout waiting for Chrome debug port ${port}`));
-                return;
-            }
-
-            const req = http.get(`http://127.0.0.1:${port}/json/version`, (res) => {
-                let data = '';
-                res.on('data', chunk => data += chunk);
-                res.on('end', () => {
-                    try {
-                        const info = JSON.parse(data);
-                        resolve(info);
-                    } catch (e) {
-                        setTimeout(tryConnect, 100);
-                    }
-                });
-            });
-
-            req.on('error', () => {
-                setTimeout(tryConnect, 100);
-            });
-
-            req.setTimeout(1000, () => {
-                req.destroy();
-                setTimeout(tryConnect, 100);
-            });
-        };
-
-        tryConnect();
-    });
-}
-
 // Try to find the crawl's Chrome session
 function findCrawlChromeSession(crawlId) {
     if (!crawlId) return null;
diff --git a/archivebox/plugins/chrome/tests/test_chrome.py b/archivebox/plugins/chrome/tests/test_chrome.py
index 380c16ae..0d580244 100644
--- a/archivebox/plugins/chrome/tests/test_chrome.py
+++ b/archivebox/plugins/chrome/tests/test_chrome.py
@@ -95,7 +95,7 @@ def find_chromium_binary():
 @pytest.fixture(scope="session", autouse=True)
 def ensure_chromium_and_puppeteer_installed():
     """Ensure Chromium and puppeteer are installed before running tests."""
-    from abx_pkg import Binary, NpmProvider
+    from abx_pkg import Binary, NpmProvider, BinProviderOverrides
 
     # Rebuild pydantic models
     NpmProvider.model_rebuild()
diff --git a/archivebox/plugins/dom/on_Snapshot__53_dom.js b/archivebox/plugins/dom/on_Snapshot__53_dom.js
index 20e5fcea..11ed9c18 100644
--- a/archivebox/plugins/dom/on_Snapshot__53_dom.js
+++ b/archivebox/plugins/dom/on_Snapshot__53_dom.js
@@ -18,17 +18,18 @@
  *     DOM_ENABLED: Enable DOM extraction (default: true)
  */
 
-// Get environment variable with default
-function getEnv(name, defaultValue = '') {
-    return (process.env[name] || defaultValue).trim();
-}
+const fs = require('fs');
+const path = require('path');
+// Add NODE_MODULES_DIR to module resolution paths if set
+if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 
-function getEnvBool(name, defaultValue = false) {
-    const val = getEnv(name, '').toLowerCase();
-    if (['true', '1', 'yes', 'on'].includes(val)) return true;
-    if (['false', '0', 'no', 'off'].includes(val)) return false;
-    return defaultValue;
-}
+const {
+    findChromium,
+    getEnv,
+    getEnvBool,
+    getEnvInt,
+    parseResolution,
+} = require('../chrome/chrome_utils.js');
 
 // Check if DOM is enabled BEFORE requiring puppeteer
 if (!getEnvBool('DOM_ENABLED', true)) {
@@ -38,13 +39,7 @@ if (!getEnvBool('DOM_ENABLED', true)) {
 }
 
 // Now safe to require puppeteer
-const fs = require('fs');
-const path = require('path');
-// Add NODE_MODULES_DIR to module resolution paths if set
-if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
-
 const puppeteer = require('puppeteer-core');
-const { findChromium } = require('../chrome/chrome_utils.js');
 
 // Extractor metadata
 const PLUGIN_NAME = 'dom';
@@ -64,11 +59,6 @@ function parseArgs() {
     return args;
 }
 
-function getEnvInt(name, defaultValue = 0) {
-    const val = parseInt(getEnv(name, String(defaultValue)), 10);
-    return isNaN(val) ? defaultValue : val;
-}
-
 // Check if staticfile extractor already downloaded this URL
 const STATICFILE_DIR = '../staticfile';
 function hasStaticFileOutput() {
@@ -100,12 +90,6 @@ function getCdpUrl() {
     return null;
 }
 
-// Parse resolution string
-function parseResolution(resolution) {
-    const [width, height] = resolution.split(',').map(x => parseInt(x.trim(), 10));
-    return { width: width || 1440, height: height || 2000 };
-}
-
 async function dumpDom(url) {
     const timeout = (getEnvInt('CHROME_TIMEOUT') || getEnvInt('TIMEOUT', 60)) * 1000;
     const resolution = getEnv('CHROME_RESOLUTION') || getEnv('RESOLUTION', '1440,2000');
diff --git a/archivebox/plugins/infiniscroll/on_Snapshot__45_infiniscroll.js b/archivebox/plugins/infiniscroll/on_Snapshot__45_infiniscroll.js
index 506e8371..3003d370 100755
--- a/archivebox/plugins/infiniscroll/on_Snapshot__45_infiniscroll.js
+++ b/archivebox/plugins/infiniscroll/on_Snapshot__45_infiniscroll.js
@@ -21,21 +21,16 @@
  *     INFINISCROLL_EXPAND_DETAILS: Expand <details> and comments (default: true)
  */
 
-function getEnv(name, defaultValue = '') {
-    return (process.env[name] || defaultValue).trim();
-}
+const fs = require('fs');
+const path = require('path');
+// Add NODE_MODULES_DIR to module resolution paths if set
+if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 
-function getEnvBool(name, defaultValue = false) {
-    const val = getEnv(name, '').toLowerCase();
-    if (['true', '1', 'yes', 'on'].includes(val)) return true;
-    if (['false', '0', 'no', 'off'].includes(val)) return false;
-    return defaultValue;
-}
-
-function getEnvInt(name, defaultValue = 0) {
-    const val = parseInt(getEnv(name, String(defaultValue)), 10);
-    return isNaN(val) ? defaultValue : val;
-}
+const {
+    getEnv,
+    getEnvBool,
+    getEnvInt,
+} = require('../chrome/chrome_utils.js');
 
 // Check if infiniscroll is enabled BEFORE requiring puppeteer
 if (!getEnvBool('INFINISCROLL_ENABLED', true)) {
@@ -43,10 +38,6 @@ if (!getEnvBool('INFINISCROLL_ENABLED', true)) {
     process.exit(0);
 }
 
-const fs = require('fs');
-const path = require('path');
-// Add NODE_MODULES_DIR to module resolution paths if set
-if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 const puppeteer = require('puppeteer-core');
 
 const PLUGIN_NAME = 'infiniscroll';
diff --git a/archivebox/plugins/pdf/on_Snapshot__52_pdf.js b/archivebox/plugins/pdf/on_Snapshot__52_pdf.js
index e42a8a6e..ccb30b01 100644
--- a/archivebox/plugins/pdf/on_Snapshot__52_pdf.js
+++ b/archivebox/plugins/pdf/on_Snapshot__52_pdf.js
@@ -18,17 +18,18 @@
  *     PDF_ENABLED: Enable PDF generation (default: true)
  */
 
-// Get environment variable with default
-function getEnv(name, defaultValue = '') {
-    return (process.env[name] || defaultValue).trim();
-}
+const fs = require('fs');
+const path = require('path');
+// Add NODE_MODULES_DIR to module resolution paths if set
+if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 
-function getEnvBool(name, defaultValue = false) {
-    const val = getEnv(name, '').toLowerCase();
-    if (['true', '1', 'yes', 'on'].includes(val)) return true;
-    if (['false', '0', 'no', 'off'].includes(val)) return false;
-    return defaultValue;
-}
+const {
+    findChromium,
+    getEnv,
+    getEnvBool,
+    getEnvInt,
+    parseResolution,
+} = require('../chrome/chrome_utils.js');
 
 // Check if PDF is enabled BEFORE requiring puppeteer
 if (!getEnvBool('PDF_ENABLED', true)) {
@@ -38,12 +39,7 @@ if (!getEnvBool('PDF_ENABLED', true)) {
 }
 
 // Now safe to require puppeteer
-const fs = require('fs');
-const path = require('path');
-// Add NODE_MODULES_DIR to module resolution paths if set
-if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 const puppeteer = require('puppeteer-core');
-const { findChromium } = require('../chrome/chrome_utils.js');
 
 // Extractor metadata
 const PLUGIN_NAME = 'pdf';
@@ -63,11 +59,6 @@ function parseArgs() {
     return args;
 }
 
-function getEnvInt(name, defaultValue = 0) {
-    const val = parseInt(getEnv(name, String(defaultValue)), 10);
-    return isNaN(val) ? defaultValue : val;
-}
-
 // Check if staticfile extractor already downloaded this URL
 const STATICFILE_DIR = '../staticfile';
 function hasStaticFileOutput() {
@@ -99,12 +90,6 @@ function getCdpUrl() {
     return null;
 }
 
-// Parse resolution string
-function parseResolution(resolution) {
-    const [width, height] = resolution.split(',').map(x => parseInt(x.trim(), 10));
-    return { width: width || 1440, height: height || 2000 };
-}
-
 async function printToPdf(url) {
     const timeout = (getEnvInt('CHROME_TIMEOUT') || getEnvInt('TIMEOUT', 60)) * 1000;
     const resolution = getEnv('CHROME_RESOLUTION') || getEnv('RESOLUTION', '1440,2000');
diff --git a/archivebox/plugins/screenshot/on_Snapshot__51_screenshot.js b/archivebox/plugins/screenshot/on_Snapshot__51_screenshot.js
index da25c459..ac968883 100644
--- a/archivebox/plugins/screenshot/on_Snapshot__51_screenshot.js
+++ b/archivebox/plugins/screenshot/on_Snapshot__51_screenshot.js
@@ -18,17 +18,18 @@
  *     SCREENSHOT_ENABLED: Enable screenshot capture (default: true)
  */
 
-// Get environment variable with default
-function getEnv(name, defaultValue = '') {
-    return (process.env[name] || defaultValue).trim();
-}
+const fs = require('fs');
+const path = require('path');
+// Add NODE_MODULES_DIR to module resolution paths if set
+if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 
-function getEnvBool(name, defaultValue = false) {
-    const val = getEnv(name, '').toLowerCase();
-    if (['true', '1', 'yes', 'on'].includes(val)) return true;
-    if (['false', '0', 'no', 'off'].includes(val)) return false;
-    return defaultValue;
-}
+const {
+    findChromium,
+    getEnv,
+    getEnvBool,
+    getEnvInt,
+    parseResolution,
+} = require('../chrome/chrome_utils.js');
 
 // Check if screenshot is enabled BEFORE requiring puppeteer
 if (!getEnvBool('SCREENSHOT_ENABLED', true)) {
@@ -38,12 +39,7 @@ if (!getEnvBool('SCREENSHOT_ENABLED', true)) {
 }
 
 // Now safe to require puppeteer
-const fs = require('fs');
-const path = require('path');
-// Add NODE_MODULES_DIR to module resolution paths if set
-if (process.env.NODE_MODULES_DIR) module.paths.unshift(process.env.NODE_MODULES_DIR);
 const puppeteer = require('puppeteer-core');
-const { findChromium } = require('../chrome/chrome_utils.js');
 
 // Extractor metadata
 const PLUGIN_NAME = 'screenshot';
@@ -63,11 +59,6 @@ function parseArgs() {
     return args;
 }
 
-function getEnvInt(name, defaultValue = 0) {
-    const val = parseInt(getEnv(name, String(defaultValue)), 10);
-    return isNaN(val) ? defaultValue : val;
-}
-
 // Check if staticfile extractor already downloaded this URL
 const STATICFILE_DIR = '../staticfile';
 function hasStaticFileOutput() {
@@ -99,12 +90,6 @@ function getCdpUrl() {
     return null;
 }
 
-// Parse resolution string
-function parseResolution(resolution) {
-    const [width, height] = resolution.split(',').map(x => parseInt(x.trim(), 10));
-    return { width: width || 1440, height: height || 2000 };
-}
-
 async function takeScreenshot(url) {
     const timeout = (getEnvInt('CHROME_TIMEOUT') || getEnvInt('TIMEOUT', 60)) * 1000;
     const resolution = getEnv('CHROME_RESOLUTION') || getEnv('RESOLUTION', '1440,2000');
diff --git a/archivebox/plugins/ublock/tests/test_ublock.py b/archivebox/plugins/ublock/tests/test_ublock.py
index 2ba718e0..5780e0b2 100644
--- a/archivebox/plugins/ublock/tests/test_ublock.py
+++ b/archivebox/plugins/ublock/tests/test_ublock.py
@@ -158,49 +158,19 @@ def test_large_extension_size():
 
 
 def setup_test_lib_dirs(tmpdir: Path) -> dict:
-    """Create isolated lib directories for tests and return env dict.
+    """Get lib directories for tests, using project's existing node_modules.
 
-    Sets up:
-        LIB_DIR: tmpdir/lib/<arch>
-        NODE_MODULES_DIR: tmpdir/lib/<arch>/npm/node_modules
-        NPM_BIN_DIR: tmpdir/lib/<arch>/npm/bin
-        PIP_VENV_DIR: tmpdir/lib/<arch>/pip/venv
-        PIP_BIN_DIR: tmpdir/lib/<arch>/pip/venv/bin
+    Uses the project's node_modules to avoid slow npm install during tests.
     """
-    import platform
-    arch = platform.machine()
-    system = platform.system().lower()
-    arch_dir = f"{arch}-{system}"
+    # Use project's existing node_modules (puppeteer-core already installed)
+    project_root = Path(__file__).parent.parent.parent.parent.parent
+    node_modules_dir = project_root / 'node_modules'
 
-    lib_dir = tmpdir / 'lib' / arch_dir
-    npm_dir = lib_dir / 'npm'
-    node_modules_dir = npm_dir / 'node_modules'
-    npm_bin_dir = npm_dir / 'bin'
-    pip_venv_dir = lib_dir / 'pip' / 'venv'
-    pip_bin_dir = pip_venv_dir / 'bin'
-
-    # Create directories
-    node_modules_dir.mkdir(parents=True, exist_ok=True)
-    npm_bin_dir.mkdir(parents=True, exist_ok=True)
-    pip_bin_dir.mkdir(parents=True, exist_ok=True)
-
-    # Install puppeteer-core to the test node_modules if not present
     if not (node_modules_dir / 'puppeteer-core').exists():
-        result = subprocess.run(
-            ['npm', 'install', '--prefix', str(npm_dir), 'puppeteer-core'],
-            capture_output=True,
-            text=True,
-            timeout=120
-        )
-        if result.returncode != 0:
-            pytest.skip(f"Failed to install puppeteer-core: {result.stderr}")
+        pytest.skip("puppeteer-core not installed in project node_modules")
 
     return {
-        'LIB_DIR': str(lib_dir),
         'NODE_MODULES_DIR': str(node_modules_dir),
-        'NPM_BIN_DIR': str(npm_bin_dir),
-        'PIP_VENV_DIR': str(pip_venv_dir),
-        'PIP_BIN_DIR': str(pip_bin_dir),
     }
 
 
@@ -268,11 +238,10 @@ def test_extension_loads_in_chromium():
         # Step 1: Install the uBlock extension
         result = subprocess.run(
             ['node', str(INSTALL_SCRIPT)],
-            cwd=str(tmpdir),
             capture_output=True,
             text=True,
             env=env,
-            timeout=120
+            timeout=15
         )
         assert result.returncode == 0, f"Extension install failed: {result.stderr}"
 
@@ -298,7 +267,7 @@ def test_extension_loads_in_chromium():
 
         # Wait for Chromium to launch and CDP URL to be available
         cdp_url = None
-        for i in range(20):
+        for i in range(10):
             if chrome_launch_process.poll() is not None:
                 stdout, stderr = chrome_launch_process.communicate()
                 raise RuntimeError(f"Chromium launch failed:\nStdout: {stdout}\nStderr: {stderr}")
@@ -306,7 +275,7 @@ def test_extension_loads_in_chromium():
             if cdp_file.exists():
                 cdp_url = cdp_file.read_text().strip()
                 break
-            time.sleep(1)
+            time.sleep(0.5)
 
         assert cdp_url, "Chromium CDP URL not found after 20s"
         print(f"Chromium launched with CDP URL: {cdp_url}")
@@ -409,7 +378,7 @@ const puppeteer = require('puppeteer-core');
                 capture_output=True,
                 text=True,
                 env=env,
-                timeout=90
+                timeout=10
             )
 
             print(f"stderr: {result.stderr}")
@@ -473,11 +442,10 @@ def test_blocks_ads_on_test_page():
         # Step 1: Install the uBlock extension
         result = subprocess.run(
             ['node', str(INSTALL_SCRIPT)],
-            cwd=str(tmpdir),
             capture_output=True,
             text=True,
             env=env,
-            timeout=120
+            timeout=15
         )
         assert result.returncode == 0, f"Extension install failed: {result.stderr}"
 
@@ -582,7 +550,7 @@ const puppeteer = require('puppeteer-core');
                 capture_output=True,
                 text=True,
                 env=env,
-                timeout=90
+                timeout=10
             )
 
             print(f"stderr: {result.stderr}")