Compress your images in seconds. No uploads, no accounts, no hassle.
Drag and drop images onto the page, or click to browse. You can add multiple images for batch processing. We support JPEG, PNG, WebP, and AVIF formats.
Pick an output format (WebP recommended for best compression). Adjust the quality slider - 80% is a great balance of size and quality. Optionally resize large images.
Click the "Smoosh!" button. Your image is compressed instantly in your browser. Preview the before/after comparison, then download your optimized file.
Unlike other tools, your images are never uploaded to any server. Everything happens right in your browser using WebAssembly technology.
Files stay on your device
Nothing leaves your browser
No internet needed after load
Faster page loads improve SEO and user experience. Smaller images = happier visitors.
Product images that load instantly. Better Core Web Vitals, better conversions.
Compress images before uploading to your CMS. Your readers will thank you.
Best overall compression
Next-gen, smallest files
Universal compatibility
Lossless with transparency
Typically 50-80% smaller depending on the original format and your quality settings. WebP at 80% quality often achieves 70%+ reduction from PNG.
At 80% quality, most people can't tell the difference. The before/after comparison lets you verify quality before downloading.
The web app handles files up to ~50MB. For larger files or better performance, try the desktop app which has no limits.
TinyPNG uploads your images to their servers. CanYouSmoosh processes everything locally - your images never leave your device. See full comparison.