Image Compressor
Compress JPG, PNG, WebP images online. Reduce file size without uploading to any server.
Drop images here or click to upload
Supports JPG, PNG, WebP, GIF — processed in your browser
All processing is done in your browser — images are never uploaded to a server.
About Image Compressor
Compress one or multiple images at once directly in your browser using the Canvas API. Drag and drop multiple files, choose output format (JPEG, WebP, or PNG) and quality level, and download compressed versions instantly. Shows original vs. compressed file size and percentage reduction for each image. 100% client-side — your images never leave your device.
All processing happens entirely in your browser using modern web APIs. Nothing is uploaded to our servers — your data stays local and private. Free to use forever, with a Pro plan for power users who want an ad-free experience and API access.
Common use cases
- Reducing image file sizes before uploading to a website or CMS
- Optimizing images for faster page loads and better Core Web Vitals scores
- Converting PNG images to JPEG or WebP for smaller file sizes
- Batch compressing multiple product photos before uploading to an e-commerce store
- Reducing image attachment sizes before sending in emails
How it works
Uses the browser's Canvas API: the image is drawn onto an HTML <canvas> element at its original dimensions, then exported using canvas.toBlob() with the chosen MIME type and quality parameter (0.0–1.0). JPEG and WebP support lossy compression via the quality parameter. PNG is always lossless — to reduce PNG size, convert to WebP instead. All work happens in your browser's rendering engine.