Related tip: anywhere you're looking to deploy compression in a backend, consider zstd (https://facebook.github.io/zstd/). I've found it suitable for streaming compression (Gbps+ flows without exorbitant CPU usage), storage compression (high compression ratios at higher levels; fast decompression), and found implementations available to every language I've needed. It comes out strictly better than gzip ~across the board in my experience, and should be the default compressor to choose or start evaluations from if you have no other constraints.

I don't think it's yet deployed in browsers, so I'm restricting my recommendation to tools and backends. IIRC brotli is worth considering for browsers, but I haven't deployed it myself.