Image Compressor
Compress JPEG, PNG, or WebP images with a quality slider and optional max-dimension cap, with a side-by-side preview.
Processed locally in your browser — nothing is uploaded.
Image
Files are processed entirely in your browser — nothing is uploaded to any server.
About Image Compressor
Load an image, drag the quality slider, and watch the file size drop. An optional max-dimension cap scales oversized photos down at the same time, which is usually where the biggest savings come from.
Output is re-encoded to JPEG or WebP on a canvas in your browser. The original and compressed versions are shown side by side with their sizes and the percentage saved, so you can pick the lowest quality that still looks right.
Common uses
- Get a photo under an email or form upload limit
- Prepare images for a web page without a build pipeline
- Turn heavyweight PNG screenshots into small WebP files
Example
Input
3.8 MB JPEG photo, quality 70, max dimension 1920
Output
Roughly 300–500 KB JPEG, ~90% smaller
Limitations
- JPEG and WebP are lossy — inspect the preview before using low quality values.
- PNG input with transparency keeps its alpha only when WebP output is chosen.