Images account for up to 50% of a typical web page's size. Optimizing images is one of the most effective ways to speed up page loading, improve Core Web Vitals, and reduce bandwidth consumption for users.
Image Formats for the Web
- JPEG — lossy compression. Ideal for photographs. Supports quality settings from 1 to 100%. At 80% quality, the difference from the original is virtually invisible, while the file size is reduced by 5 to 10 times.
- PNG — lossless compression. Suitable for graphics with transparency, screenshots, and icons. Files are larger than JPEG, but without compression artifacts.
- WebP — a modern format by Google. Supports both lossy and lossless compression, as well as transparency. Files are 25–35% smaller than JPEG at the same quality level.
How to Choose the Optimal Quality
For most website photos, the optimal quality is 75–85%. The visual difference from the original is minimal, while the file size savings are significant. For banners and hero images, you can increase it to 90%. For thumbnails and previews, 60–70% is sufficient.
Conclusion
Compress images right in your browser with our compression tool. Convert between formats using the format converter or add protection with a watermark.
