Compress WebP Images Online — Free & Private

Reduce WebP file sizes using the libwebp encoder directly in your browser. No uploads, no server processing — your images stay on your device. Batch compress multiple files and fine-tune quality for the perfect balance between size and visual fidelity.

Drag & drop WebP files here or

Supports .webp files

80%
Convert to WebP

Compressing...

Compressed Images

Compress WebP Images for Faster Websites

This free WebP compressor uses libwebp, Google’s reference encoder, to re-compress WebP files at optimized quality settings. If your original WebP was saved at high quality, expect 30–60% file size reduction with minimal visual difference.

How to Compress WebP Files

  1. Drag and drop your WebP files onto the upload area, or click to browse.
  2. Adjust the quality slider — 80 is a good balance of quality and size.
  3. Click Compress WebP and wait for processing to finish.
  4. Download files individually or all at once as a ZIP.

100% Private — Your Images Never Leave Your Device

Everything runs in your browser via WebAssembly. No files are transmitted to any server. Your images are processed locally and stay completely private.

Why Use WebP?

WebP is a modern image format developed by Google that delivers 25–35% smaller files than JPEG and PNG at equivalent quality. All modern browsers support it natively. If you have JPEG or PNG images, consider using our JPEG or PNG compressors with the “Convert to WebP” toggle for even better results.

FAQ

Frequently Asked Questions

This tool uses the libwebp encoder compiled to WebAssembly, running entirely in your browser. Libwebp is Google's official WebP encoding library, the same one used in Chrome, Android, and major image processing pipelines. It re-encodes your WebP files with optimized compression settings to achieve smaller file sizes while maintaining visual quality.

No. All compression happens locally on your device using WebAssembly technology. Your WebP files are never transmitted, uploaded, stored, or accessed by any server. This means your images stay completely private, the tool works offline after the initial page load, and there are no file size restrictions from server limits.

There is no enforced file size limit since all processing happens in your browser. However, very large WebP files (20MB+ or high-resolution images) require more memory and processing time. Most WebP images compress quickly. If you experience slowdowns with very large files, close other browser tabs to free up memory or compress in smaller batches.

WebP files that were encoded with default or conservative settings can typically be reduced by 30-60% through re-encoding at optimized quality levels. The exact savings depend on the original encoding quality, image content, and your chosen quality setting. Images originally saved at very high quality see the largest reductions, while already-optimized WebP files may see smaller improvements.

WebP is an image format developed by Google that provides both lossy and lossless compression. It produces files 25-35% smaller than equivalent JPEG or PNG files at the same visual quality. WebP is supported by all modern browsers (Chrome, Firefox, Safari, Edge) and is the recommended format for web images by Google's PageSpeed Insights. Using WebP reduces page load times and bandwidth usage.