Image Compressor
🔒 In your browserShrink JPG, PNG & WebP file size in your browser — no upload.
How it works
Shrink an image's file size by re-encoding it at a lower quality. Drop in a photo, pick the quality and format, and see the size drop instantly — great for email, uploads and faster pages.
🖼️ Drop an image here, or click to choose
PNG, JPG, WebP, GIF — stays on your device
🔒 Processed entirely in your browser — your image is never uploaded.
🔒 Processed in your browser: your image is handled locally on a canvas and never uploaded to any server, so even photos with location data or personal detail stay on your device.
About the Image Compressor
This free image compressor shrinks the file size of a photo by re-encoding it at a lower quality. Drop in a JPG, PNG or WebP, adjust the quality, and download a much smaller file — ideal for email attachments, faster web pages and upload limits.
Everything runs in your browser — your image is never uploaded.
How image compression works
Photos are large because they store fine detail your eye barely notices. Lossy compression re-encodes the image, discarding some of that detail to save space — and formats like JPG and WebP let you choose how aggressively. A quality of around 70–80% usually cuts the file size dramatically while looking almost identical, which is why it's the sweet spot for the web.
Tips for the smallest file
- Start at 70–80% quality and lower it until you can just notice a difference, then step back up.
- Choose WebP for the smallest size — it beats JPG at the same quality in most browsers.
- Resize very large photos first: a 4000-pixel image displayed at 800 pixels is wasted data.
Frequently asked questions
How do I reduce an image's file size?
Drop it into the compressor and lower the quality slider — the tool re-encodes the image and shows the new, smaller size. Around 70–80% quality usually looks identical while cutting size sharply.
Does compressing an image lose quality?
Lossy compression discards some detail, but at 70–80% quality the difference is hard to see on screen while the file becomes much smaller. Use a higher quality if you need to preserve fine detail.
Are my images uploaded to a server?
No. The compression happens entirely in your browser, so your photos never leave your device — which matters for anything private.
Which format compresses best?
WebP generally gives the smallest file at a given quality, followed by JPG. PNG is lossless and best for graphics with sharp edges or transparency rather than photos.
Is there a file size limit?
There's no fixed limit, though very large images depend on your device's memory since everything is processed locally.