Image Compressor

Compress images to WebP, AVIF, JPEG, PNG and more — powered by WASM encoding that runs entirely in your browser. No uploads, no servers, 100% private.

Drop your image here

or click to browse — JPG, PNG, WebP, AVIF, GIF, BMP, TIFF

Why compress images online for free?

Reduce image file sizes without losing visible quality — all processed locally in your browser using WASM-powered encoding. Perfect for web optimization, email attachments, and storage savings.

Multiple Output Formats

Choose from WebP, AVIF, JPEG (mozjpeg), JPEG XL, WebP2, PNG, and QOI — each optimized for different use cases and browser support.

Before/After Comparison

Compare your original and compressed images side by side with an interactive slider to see exactly how the compression affects quality.

100% Private

All compression happens in your browser using WebAssembly. No images are uploaded to any server — your files stay completely private.

Frequently Asked Questions

Which output format should I choose?: WebP offers the best balance of quality and file size for web use. AVIF provides even better compression but has less browser support. JPEG (mozjpeg) is ideal for photos with broad compatibility.
Does compression reduce image quality?: All lossy formats (WebP, AVIF, JPEG, etc.) reduce quality somewhat, but at high quality settings (85+) the difference is usually imperceptible. PNG and QOI are lossless.
Is there a file size limit?: There is no file size limit. The tool processes images locally in your browser using WASM, so performance depends on your device capabilities.