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About this Add-on
Proxy server downloads original image, converts it to greyscale JPEG image and returns it to the browser.
It is very useful when you use limited data, such as 3G or LTE.
Compression proxy server does not save images anywhere, it processes them on the fly.
You can use default proxy server or run your own instance for free using services like Heroku or Webtask.io.
The extension is open-sourced, you can check the code on GitHub - https://github.com/ayastreb/bandwidth-hero/