
EchoJS by sl3uth
Track all loaded JavaScript files on websites.
You'll need Firefox to use this extension
Extension Metadata
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About this extension
EchoJS helps you track all JavaScript files loaded by any website in real time. Designed for developers and security researchers, it displays file URLs, supports copying, exporting, and features a sleek dark UI.
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Permissions and dataLearn more
Required permissions:
- Download files and read and modify the browser’s download history
- Access your data for all web sites
More information
- Add-on Links
- Version
- 2.0
- Size
- 15.77 kB
- Last updated
- 5 days ago (30 Jul 2025)
- Related Categories
- Licence
- MIT Licence
- Version History
- Tags
- Add to collection
Release notes for 2.0
A cleaner UI and more optimized
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