Hervorragend, im Schnitt 89% Einsparung mit extremer Komprimierung JPG20 - in Farbe. Reduziert die Ladezeit von Webseiten deutlich z.B. in Kombination mit O2 Free mit 1Mbit/s (worauf ich komplett umgestiegen bin seit im regionalen Kabelnetz von Cablesurf mit gebuchten 30MBit/s - jetzt PŸUR nicht mal mehr YouTube streaming in 360p zu Stosszeiten möglich war...
Have you changed the URL in "Configure data compression service"? It should show a checkmark in the input field icon if everything is correct. When you change the URL and activate Bandwidth Hero - it should be working.
Due to increased load and complains from ISP we had to shutdown the public data compression service.
You can still use the extension and save data if you install your own data compression service on Heroku or other hosting platform. Check https://github.com/ayastreb/bandwidth-hero-proxy for more details!
Works very well on large JPEG images. I had to stare at the screen really closely to notice the images were slightly blurry, even when using the highest compression setting. Currently saving 71% on image downloads. Only found two problems: 1. "Convert to black and white" is on by default. I suggest changing this to "off". 2. The transparent background on some GIF and PNG images comes out as black. It would be better if the compression process was skipped for GIFs and PNGs (or at least for small ones, or those with transparent backgrounds).