Smart compression, a target file size or your own quality level.
Click to select a layer · drag to move · scroll to zoom · Shift+scroll to rotate
🔒 Everything is processed locally on your device — your images are never uploaded or stored on a server
Multiple selection supported; EXIF orientation is auto-corrected on import · supports common image formats
✓ Output files are never watermarked or branded by us — crop/compress/convert/watermark all run in one pass
Answers when you need them.
It tests native-resolution image patches to choose a quality setting, compares lossless and palette PNG encoding, and can choose lossless WebP for graphics. Dimensions and format stay unchanged unless you change them. Check the actual encoded preview, especially small text and gradients. Already optimized files may not shrink further; WebP or AVIF can help if your destination accepts them.
Most image compression tools online make you pick one image and wait. This one is built for the common real case: a folder of 20, 50, 100+ photos that all need to be smaller before they go into a CMS, an email, a product listing, or a slow website — without uploading a single one of them anywhere.
Fixed quality keeps the same compression setting across every image — good when your photos are already similar in content and you just want a consistent, predictable result. Compress to a target size instead aims for a KB limit per file (useful when a platform enforces a hard upload cap) — the tool will lower quality as needed to hit it, though extremely detailed or noisy images may not compress below a certain size no matter how low the quality goes.
Add your photos, tick Compress, set the compression mode to "Compress to target KB" and type 100 (use a number a little under the limit, like 95, if the form is strict). Each image is compressed on its own to the highest quality that fits, and the results download as a zip. The same steps work for 50KB or 20KB; for very small targets or PNGs, add Convert Format to JPEG or a smaller width in the same pass. The full walkthrough is in our guide to compressing an image to 100KB.
Not much. Re-compressing an already-compressed JPEG at the same or a lower quality mostly just throws away more detail without shrinking the file much further — JPEG compression doesn't stack cleanly. If a batch of images is already fairly small, compressing again usually isn't worth the quality trade-off. Converting to a more efficient format (see the WebP/AVIF converter) is often a better move than squeezing an already-compressed JPEG harder.