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pac-script-api-chrome-55.md

Repository files navigation

About PAC Scripts

  1. Setting PAC Scripts
    1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    3.1. Alerts and Debugging
    3.2. Chromium Bugs/Features
    3.3. Implementations and Sources
    3.4. Resources

1. Setting PAC Scripts

1.1. Windows

On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script

1.2. Chromium

  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.

1.3. FireFox

Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL

2. Caching of PAC Scripts

2.1. Windows

Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.

2.2. Chromium

If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)

2.3. Firefox

After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)

3. Developing PAC Scripts

  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').

3.1. Alerts and Debugging

  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.

3.2. Chromium Bugs/Features

  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.

3.3. Implementations and Sources

3.4. Resources

  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file

About

What we know about PAC scripts

Resources

Readme
License
Activity
Custom properties

Stars

8 stars

Watchers

2 watching

Forks

1 fork
Report repository

Releases

Packages

Contributors

, '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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Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
About
What we know about PAC scripts
Resources
Readme
License
Activity
Custom properties
Stars
8 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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NameName
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LICENSE
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Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
About
What we know about PAC scripts
Resources
Readme
License
Activity
Custom properties
Stars
8 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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27 Commits
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NameName
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LICENSE
LICENSE
README.md
README.md
pac-script-api-chrome-55.md
pac-script-api-chrome-55.md
Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
About
What we know about PAC scripts
Resources
Readme
License
Activity
Custom properties
Stars
8 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors

, '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" + '

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27 Commits
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NameName
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LICENSE
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README.md
pac-script-api-chrome-55.md
pac-script-api-chrome-55.md
Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
About
What we know about PAC scripts
Resources
Readme
License
Activity
Custom properties
Stars
8 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors

, '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('^' + ".*" + '

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27 Commits
Folders and files
NameName
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.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
pac-script-api-chrome-55.md
pac-script-api-chrome-55.md
Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
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, '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('^' + ".*" + '

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Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
About
What we know about PAC scripts
Resources
Readme
License
Activity
Custom properties
Stars
8 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors

, '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
Latest commit
History
27 Commits
Folders and files
NameName
Last commit message
Last commit date
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
pac-script-api-chrome-55.md
pac-script-api-chrome-55.md
Repository files navigation
About PAC Scripts
  1. Setting PAC Scripts
    
1.1-3. Windows, Chromium, FireFox
  2. Caching of PAC Scripts
    
2.1-3. Windows, Chromium, FireFox
  3. Developing PAC Scripts
    
3.1. Alerts and Debugging
    
3.2. Chromium Bugs/Features
    
3.3. Implementations and Sources
    
3.4. Resources
1. Setting PAC Scripts
1.1. Windows
On Windows you may set PAC script via Win+R > inetcpl.cpl > Connections > LAN settings > Use automatic configuration script
1.2. Chromium
  1. In Chromium settings there is a button for opening standard Linux/Windows dialog of setting PAC script.
  2. Also Web Extensions of Chromium may set PAC script as a string and as URL via chrome.proxy.settings. This is implemented independently of the OS and has its own bugs.
1.3. FireFox
Browser > Options > Advanced > Network > Settings > Automatic proxy configuration URL
2. Caching of PAC Scripts
2.1. Windows
Windows (winHttp, etc.) does very poor caching if any. Setting PAC script via URL in system settings results in server bombardment with requests.
2.2. Chromium
If web extension set PAC script via URL then the script is loaded only once and cached. Cache overloading happens only on browser restarts. (checked on Chrome 55/Windows)
2.3. Firefox
After setting PAC URL in browser settings it is loaded only once or twice and cached for a long period. (checked on Firefox 50/Windows)
3. Developing PAC Scripts
  1. PAC script is re-evaluated (and reparsed) each time for each URL-resource loaded.
  2. There are no window, global, setTimeout/setInterval global variables. There is Math however.
  3. IE may be detected via Conditional Compilation of comment content: const isIE = /*@cc_on!@*/false;. I haven't tested this.
  4. 'google.com.' with dot at the end is also a correct notation. I don't know any library that passes host this way, but I always defense myself with: host.replace(/\.?$/, '').
3.1. Alerts and Debugging
  1. Alert messages may be seen in Chromium network events: chrome://net-internals/#events
  2. In Chromium you may check active proxy settings via chrome://net-internals/#proxy
  3. In Chromium you may add PAC script's error listener via chrome.proxy.onProxyError.addListener and pass debug information in error.
3.2. Chromium Bugs/Features
  1. Web Extensions can't set PAC scripts larger than 1MB via URL, bug.
  2. Web Extensions can't set scripts as a string with non-ASCII chars, unicode URLs must be punycoded.
  3. Once I deleted all extensions from Chrome, but PAC script was still active and couldn't be purged via settings or browser restarts.
3.3. Implementations and Sources
3.4. Resources
  1. http://findproxyforurl.com
  2. https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Necko/Proxy_Auto-Configuration_(PAC)_file
About
What we know about PAC scripts
Resources
Readme
License
Activity
Custom properties
Stars
8 stars
Watchers
2 watching
Forks
1 fork
Report repository
Releases
Packages
Contributors