Free · without registration
Reduce images. Save loading time.
Compress website images, limit their width, and convert PNG or JPG to WebP. Check the original and the result directly next to each other.
Processing directly in your browser · no file upload · no account required
Compress images
Which setting matches your website images?
Start for photos with WebP and 82 percent quality. Select the maximum width to match the actual display: An image with 800 pixels of display width can be about 1,600 pixels wide for high-resolution displays. Then check fine font, edges and color gradients in the result.
WebP supports transparency and is suitable for many photos and graphics. JPEG is an alternative for photos; transparent surfaces are white here. PNG is suitable for graphics where lossless image data is important. A newly stored PNG is not automatically smaller. The tool therefore also shows when the file has become larger.
How to Use the Result on Your Website
- Keep originals and download the optimized file.
- Replace the image in the CMS and set width and height in the HTML.
- Variants suitable for different display sizes with
srcsetProvide. - Align alt text to the contents of the image and check the result on the real page.
The processing generates new image files. Metadata and color profiles can be omitted or changed. This converter does not measure Core Web Vitals; for integration, you also use the image performance checker.
Frequent questions
Will my pictures be uploaded?
No. The image processing runs locally via the image functions of your browser. The selected files are not sent to Seitenreport.
How much file size do I save?
This depends on the original format, motif, dimensions and quality. The actual change stands for every result. Already well-optimized images can become larger.
Will transparency and animations be maintained?
PNG and WebP can get transparency; JPEG gets a white background. The output is static. Animations, EXIF and other metadata are not reliably obtained.