[potatoz2]

I’ve just tested what you suggest with a page that contains 20 books (no HTML or JS minification, and probably some typos because I didn’t run it).

https://pastebin.com/8CM1eUKQ the HTML version https://pastebin.com/ujrai58n the templated version

Even I was surprised by the result. The original size is what you’d expect: 5.3K for the full HTML version, 2.4K for the JS template version. Once Brotlied (default compression) however, the situation changes completely: 127 bytes (!) for the pure HTML version and 197 bytes for the template version. This is even true for Gzip, 213 vs 284 bytes.

I don’t know if Brotli (and Gzip) are somehow optimized for HTML, but yeah it really doesn’t make sense to use templates here.