Compress Images Without Visible Quality Loss
Image compression always re-encodes the picture, but at high settings the difference is very hard to see while the file can shrink a lot. Keep the quality slider between 80% and 90%, and try WebP, which is often much smaller than JPG at the same visual quality.
Runs in your browser
How to compress images and keep them sharp
- 1Select one or more images.
- 2Set the quality slider between 80% and 90%.
- 3Choose the format: Keep format, or WebP for a smaller file with a similar look.
- 4Press Compress image, check the percentage saved and download.
Good to know
- PNG files come out as WebP when you keep the format, because PNG has no quality setting. WebP keeps transparency.
- Compress from the original each time. Compressing an already compressed image again softens it further.
- Large camera photos often shrink a lot even at 85%, because they hold far more detail than a screen shows.
- If a website only accepts JPG, choose JPG; transparent areas become white.
Frequently asked questions
Is the compression truly lossless?
No. The tool uses quality-based compression, which removes detail the eye barely notices. At 80 to 90% most people can't tell the difference on screen.
Which format keeps the most quality for the size?
WebP usually gives the smallest file at similar quality and opens in modern browsers and apps. JPG is the safe choice when it has to open everywhere.
Can the file get bigger?
No. If compressing would make the file larger, you get the original back unchanged. The tool is free 3 times a day without signing up.