Blog

Notes on images, formats and doing the work in your browser.

• I compressed my image and the file got bigger

  Re-encoding an already-optimised image can add bytes instead of removing them. Here is why that happens, when it is expected, and what a compressor should hand you when it does.

  2026-08-24

• Why does my PNG barely shrink — and what actually works

  PNG is lossless, so ordinary compression has almost nothing to throw away. Here is why your 2 MB screenshot stays 2 MB, and the two things that do reduce it.

  2026-08-19

• Is it safe to put your images through an online tool?

  Most online image tools upload your file to a server. Here is what that means, what to check before you trust one, and how to verify a tool that claims it doesn't.

  2026-08-15