Analyze page scripts for bug bounty reconnaissance.
Users
905
+42 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#33K
#28K among extensions
Version
1.20.2
updated 20 Jan 2026
Users
monthly, 13 months
Latest, 15 Oct 2026:905 usersMove the mouse over the chart for any month
Ratings count
monthly, 13 months
Latest, 15 Oct 2026:3 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About JS Recon Buddy
The scanner uses a set of regex patterns to identify and categorize potential security-related information:
- Subdomains - discovers related subdomains within the code.
- Endpoints & Paths - uncovers potential API endpoints and other useful paths. For Next.js applications, it also automatically parses (if possible) the build manifest to discover all client-side routes.
- Potential Secrets - scans for API keys, tokens, and other sensitive data using pattern matching and Shannon entropy checks.
- Potential DOM XSS Sinks - identifies dangerous properties and functions like .innerHTML and document.write.
- Interesting Parameters - flags potentially vulnerable URL parameters (e.g., redirect, debug, url).
- Potential Dependency Confusion - (opt-in) identifies private NPM packages that are not on the public registry, flagging a potential dependency confusion attack vector.
- Source Maps - finds links to source maps which can expose original source code. Can optionally guess the location of source maps for discovered JavaScript files even if they aren't explicitly linked.
If it is a valid source map, the extension tries to deconstruct source files based on data there
- JS Libraries - lists identified JavaScript libraries and their versions.
- External and Inline Scripts - provides a complete inventory of all JavaScript sources loaded by the page, allowing you to view the content of any script in a formatted viewer.