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CreepJS

https://abrahamjuliot.github.io/creepjs

The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.

  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint

Tested:

  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe

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Creepy device and browser fingerprinting

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
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0 stars
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0 watching
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0 forks
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
Stars
0 stars
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0 watching
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0 forks
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
Stars
0 stars
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0 watching
Forks
0 forks
Report repository
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
CreepJS
https://abrahamjuliot.github.io/creepjs
The purpose of this project is to shed light on weaknesses and privacy leaks among modern anti-fingerprinting extensions and browsers.
  1. Detect and ignore API tampering (API lies)
  2. Fingerprint lie types
  3. Fingerprint extension code
  4. Fingerprint browser privacy settings
  5. Employ large-scale validation, but allow possible inconsistencies
  6. Feature detect and fingerprint new APIs that reveal high entropy
  7. Rely only on APIs that are the most difficult to spoof when generating a pure fingerprint
Tested:
  • Firefox (RFP)
  • Brave Browser (Standard/Strict)
  • Privacy Badger
  • Privacy Possom
  • Random User-Agent
  • User Agent Switcher and Manager
  • CanvasBlocker
  • Trace
  • CyDec
  • Chameleon
  • ScriptSafe
  • Windscribe
About
Creepy device and browser fingerprinting
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages