Bug Bounty Tip: Extract JavaScript File URLs from Any Page!

[Prapattimynk]

Bug Bounty Tip: Extract JavaScript File URLs from Any Page!​

Skip DevTools! Use this powerful bookmarklet to instantly grab all `.js` file URLs from any web page and save them to a `.txt` file.

Why This Matters:​

• Quickly collect all linked JavaScript files
• Use them for static analysis (LinkFinder, SecretFinder, JSParser, etc.)
• Boost your recon for endpoint discovery & auth bypass

Bookmarklet Code:​

javascript:(function(){
let urls=[];document.querySelectorAll('*').forEach(e=>{
urls.push(e.src,e.href,e.url)
});urls=[...new Set(urls)].filter(u=>u&&u.endsWith('.js')).join('\n');
let blob=new Blob([urls],{type:'text/plain'});
let a=document.createElement('a');
a.href=URL.createObjectURL(blob);
a.download='javascript_urls.txt';
a.click();
})();

How to Use:​

1. Create a new bookmark in your browser.
2. Paste the above code into the URL field.
3. Visit any target site.
4. Click the bookmark — a `javascript_urls.txt` file will download!

Feed the Output into:​

• LinkFinder
• SecretFinder
• JSParser
• Manual Analysis & Source Mapping

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Tip: Combine this with tools like gau, hakrawler, and xnLinkFinder to take your recon to the next level!