Free online image tool
Compress Image Online Free
Choose quality, dimensions, or WebP export to make smaller image files for websites, forms, and email.
- Upload an image up to 20 MB.
- Choose WebP, JPEG, PNG, or AVIF output.
- Adjust quality and download the compressed file.
Practical image guidance
Choose the output format by destination
WebP is a strong default for website images because it usually keeps quality high at a smaller file size. JPEG is practical for photo uploads and forms, PNG is better for screenshots or transparent artwork, and AVIF can be useful when the destination supports newer formats.
Resize for the place the image will be used
A 1600 pixel wide export is enough for many full-width web layouts, while square profile photos often need exact dimensions such as 512 by 512. Keeping enlargement disabled prevents small originals from becoming soft or stretched.
Balance quality, file size, and compatibility
Lower quality settings can shrink photos quickly, but logos, text, and interface screenshots often need PNG to keep edges crisp. The best result depends on whether the image is headed to a website, email, form upload, product listing, or profile.
Specific advice for compress image online
Use quality as a practical control
Photo-heavy images often compress well around 75 to 85 quality, while screenshots, small text, and logos may need PNG or a higher-quality WebP to stay readable. Preview the result before replacing an original image.
Match compression to the upload limit
If a form or email service has a strict file-size limit, reduce dimensions first and then lower quality gradually. Large dimensions usually add more weight than a few quality points.