CompressImages Online
Reduce the file size of JPG, PNG and WebP images automatically, at high quality. Perfect for faster websites and smaller attachments. Free, private, runs in your browser.
Image Compressor
Drop images here or click to select
Multiple files supported — converted automatically in your browser
JPG • PNG • WebP — re-encoded at high quality to reduce sizeHow image compression works
This tool re-encodes your images at high quality. For JPG and WebP, re-encoding at quality 0.92 produces a file that looks essentially identical to the original but is often smaller, because the encoder is more efficient and strips unnecessary data. PNG is re-encoded losslessly.
Best for
- Making websites load faster with smaller images.
- Reducing email attachment sizes.
- Saving storage space on photo archives.
- Optimising images for apps and social media.
JPG vs PNG vs WebP for size
| Format | Compression | Typical size |
|---|---|---|
| JPG | Lossy | Small |
| PNG | Lossless | Large |
| WebP | Lossy / lossless | Very small |
For the smallest files at the same visual quality, convert toWebP. For perfect lossless quality, usePNG. For maximum compatibility with small size, useJPG.
Frequently asked questions
Does compression reduce image quality?
Visually, no. Re-encoding at high quality (0.92) is virtually indistinguishable from the original for normal photos and graphics.
Can I compress PNG images?
Yes. PNG is re-encoded losslessly, so quality stays perfect. The size reduction is usually smaller than for JPG or WebP.
How much smaller will my images be?
It depends on the source. JPG and WebP usually shrink somewhat; converting to WebP gives the smallest result at the same visual quality.
Is it free and private?
Yes. Compression runs entirely in your browser with no upload, and it is free with no sign-up or limits.