Compress Images, nothing uploaded.
Reduce JPEG, PNG, WebP and SVG file sizes directly in your browser. No upload, no account, nothing leaves your device.
Drop your images here
JPG · PNG · WebP · SVG
Free · No account required · No upload · Processes entirely in your browser
Done in three steps.
Drop your file
Loads into browser memory. Nothing is transmitted to any server at any point.
WebAssembly runs on your CPU
Compression happens locally using the Canvas API and pngquant WASM. No network request is made for your file.
Save and done
The result saves directly to your device. Close the tab and browser memory clears completely. Nothing is stored or logged.
What is image compression?
A way to shrink file size by discarding redundant pixel data. A smartphone photo starting at 8 MB can compress below 400 KB with no visible difference at screen sizes, cutting load time and bandwidth in one step.
Websites and landing pages
Every extra kilobyte increases page load time. A 3 MB hero image compressed to 200 KB loads 15x faster, and Google notices. Compress every image before uploading to your CMS.
Email attachments
Gmail limits attachments to 25 MB; Outlook.com to 20 MB; many corporate mail servers to 10 MB. Compressing first makes attachments send reliably.
Social media uploads
Instagram, Facebook, and X recompress images on upload, often degrading quality. Uploading a pre-compressed image gives you control over the final output quality.
E-commerce product photos
Shopify, WooCommerce, and Amazon require fast-loading product images. Compressing photos reduces page load time, lowers bounce rate, and improves conversion.
App and game assets
Sprite sheets, backgrounds, and UI textures must be compact to minimise load time and memory usage on mobile devices.
JPEG, PNG, WebP, SVG — which format?
The right format depends on the image type and intended use.
| Format | Best for | Transparency | Typical reduction |
|---|---|---|---|
| JPEG | Photos, gradients, complex imagery | No | 60-80% |
| PNG | Logos, icons, screenshots, transparency | Yes | 40-70% |
| WebP | Web delivery, replaces JPEG and PNG | Yes | 25-35% vs JPEG |
| SVG | Icons, logos, diagrams (vector only) | Yes | 10-50% |
Choosing the right quality setting
| Quality range | Best for | Typical reduction |
|---|---|---|
| 85-100 | Print, archival, source files for future editing | 10-30% |
| 75-85 | Web images, blog posts, social media | 50-75% |
| 60-75 | Email attachments, preview thumbnails | 65-80% |
| Below 60 | Small thumbnails where size is the only priority | 75-90% |
Your files never leave your browser.
Most online tools upload your file to a server, process it remotely, then send it back. This tool is architecturally different. Compression runs via WebAssembly on your CPU. There is no server that receives your image. Not even temporarily.
No file data transmitted over the network at any point
No account, sign-in, or email required to use any feature
Closing the tab clears all data from browser memory completely
Open-source processing: Canvas API and pngquant WASM