Image Compressor

Compress images entirely in your browser — no upload, no server, no storage. Supports JPEG, PNG, WebP.

Upload an image on the left to begin

  • Runs entirely in your browser — no upload
  • Up to ~90% size reduction
  • WebP, JPEG, PNG output

Image compression — a quick guide

Format choice matters most

WebP delivers 25–35% smaller files than JPEG at equal quality. Use JPEG for wide compatibility, PNG only when transparency is required.

Quality 80–85 is the sweet spot

Below 80% compression artefacts become visible. Above 90% savings drop dramatically. For thumbnails 60–70% is fine.

Right-size your images

Serving a 3000px image in a 600px container wastes 4× the bandwidth. Resize to the actual display dimensions.