Image Compressor
Shrink JPG, PNG and WebP images in your browser and see exactly how many bytes you saved.
Runs in your browser — your text and files never leave your device.
Drop an image here
PNG, JPEG, WebP or GIF — up to whatever your browser can hold in memory.
Compression happens in your browser, so the image is never uploaded. That also means the result depends on your browser’s encoder, and a photo that is already optimised may not get much smaller.
Choose a quality, press Compress and download a smaller file. The image never leaves your device, so there is nothing to upload and nothing stored.
How to use it
- Drop an image onto the page, or choose a file.
- Pick JPEG or WebP and set the quality — PNG is lossless and has no quality setting.
- Press Compress, compare the sizes, and download the result.
Good to know
- Compression is done by your browser’s own encoder, so results vary slightly between browsers.
- If a photo is already optimised the compressed file can come out about the same size — the tool says so rather than pretending it helped.
Related tools: Image Resizer · Image Format Converter
Frequently asked questions
Are my images uploaded to a server?
No. The file is read into your browser, re-encoded there and never sent anywhere.
Which format should I choose?
WebP is usually smallest for photos and supports transparency, JPEG is the most compatible, and PNG suits screenshots and flat graphics.