Compress WebP images online. Free and private.
Reduce WebP file size with libwebp directly in your browser. Compress up to 20 images at once, compare every result at 1:1, and download one ZIP — no signup, watermark or server upload.
Capabilities and limits verified October 8, 2026.
For repeat workflows
More than a one-off batch?
Paid plans handle up to 500 images per batch, files up to 300 MB, faster parallel encoding, and whole-folder input. Plans start at $19/year.
How to compress WebP images online
- 1
Add your WebP images
Choose up to 20 WebP files, each up to 10 MB on the free plan. They stay on your device.
- 2
Compress with libwebp
libwebp re-encodes each image at a calibrated quality while a Web Worker keeps the page responsive.
- 3
Compare and download
Check the exact size saving, inspect the 1:1 comparison, then download one file or the full ZIP.
A WebP image compressor without the upload queue
Smaller or unchanged
WebP files are decoded and re-encoded with libwebp at a calibrated quality. If the result is not smaller, PixSip keeps the original instead.
Compare the real pixels
Open the 1:1 comparison and wipe between the original and compressed WebP before you download it.
Private browser processing
Encoding happens with WebAssembly on your device. Your WebP files are never posted to an upload server.