A modern Manifest V3 rewrite of the classic Bandwidth Hero extension.
Saves mobile data and speeds up browsing by compressing images through a proxy before they load.
- Image compression through your own proxy
- Data savings statistics (images compressed and data via proxy)
- Modern, mobile-friendly UI with sliders and toggles
- Grayscale mode for extra savings
- Exclusion list to skip specific sites
- Works on Chromium browsers (Chrome, Edge, Brave, Kiwi, Ultimatum) and Firefox
- Extension rewrites
<img>and<picture>tags on web pages. - Image requests are redirected through your proxy.
- The proxy compresses and resizes images.
- The extension tracks savings locally.
- Download the latest chromium zip from Releases.
- Extract it.
- Go to
chrome://extensions/. - Enable Developer Mode.
- Click Load Unpacked and select the extracted folder.
- Download the firefox zip from Releases.
- Go to
about:debugging#/runtime/this-firefox. - Click "Load Temporary Add-on" and select the zip or manifest.
This extension requires a proxy to work.
You can host your own easily using:
Proxy repository: bandwidth-hero-proxy2
Deploy options: Heroku, Railway.app, Netlify Functions, Vercel, or your own Node.js server.
Once deployed, copy your proxy endpoint (e.g. https://your-proxy.example.com/api/index) and paste it into the Options page.
- Enable compression: master toggle
- Quality slider (1–100): lower = more savings, higher = better quality
- Max width: resize down large images
- Grayscale: convert images to black and white
- Excluded sites: skip compression on selected domains (e.g.
google.com gstatic.com)
Options page shows:
- Images compressed
- Data via proxy (requires proxy to send
Timing-Allow-Origin: *)
This is a community hobby project.
Contributions are welcome! Bug fixes, UI improvements, testing across browsers are especially helpful.
Feel free to fork, improve, and send pull requests.
- Original Bandwidth Hero by Alexander Ayastreb: https://github.com/ayastreb/bandwidth-hero
- This MV3 fork and modern UI: https://github.com/himshim/bandwidth-hero-mv3
- Proxy server: https://github.com/himshim/bandwidth-hero-proxy2
MIT License
Latest releases: https://github.com/himshim/bandwidth-hero-mv3/releases