"Accept-Encoding" means only that the client also understands specific encoding (in this case compression) it is still up to the server to chose what to dot. Th

"Accept-Encoding" means only that the client also understands specific encoding (in this case compression) it is still up to the server to chose what to dot. There was a time when browsers didn't support any compression. This header was introduced to signal to server what is acceptable by the client, that's why the header allows specifying multiple compression algorithms. Similar thing is with header that's quite useful, but for some reason very few sites honor it: "Accept-Language" browser can specify which languages are preferred, but it is up to server to honor it (for example given language version is not available).