Compressing HTTP responses can significantly improve the performance of your Symfony applications. But you still need to find your way through the jungle of standards and formats.

In this presentation, we'll discover how HTTP compression works, the different formats supported by modern web browsers (deflate, gzip, Brotli, and the brand new Zstandard), and how to use them correctly with Symfony.

We'll also look at which formats to compress, which not to, when to use dynamic compression, and when (and how) to pre-compress responses that can be compressed for even better performance.