What does WebP offer that PNG does not?
PNG is lossless and supports transparency, which makes it a favorite for logos, icons, interface graphics and screenshots. Its weakness is size: PNG files can be large, particularly for images with gradients or photographic content.
WebP also supports transparency, but it can compress far more efficiently, especially in its lossy mode. That means you can often keep a see-through background while ending up with a noticeably lighter file. The trade-off in this tool is that WebP output uses a quality setting, so it is not a bit-for-bit copy of the PNG.
Good reasons to convert PNG to WebP
If you publish images on a website, smaller files mean faster pages, and WebP is a widely used way to get there. It is particularly useful for graphics that need transparency, such as product cutouts, logos on colored sections or overlay images, where JPG is not an option.
It can also help when a platform enforces a file size limit and your PNG is slightly over it.
If the destination does not accept WebP, or you need an exact lossless copy, stay with PNG. Going the other way is possible with WEBP to PNG.
How to convert PNG to WebP with this tool
- Drag your PNG into the upload area, or click to browse.
- Check the original preview.
- Use the Quality slider (10% to 100%, default 92%) to trade size for fidelity.
- Click Convert to WEBP.
- Compare the converted preview and the size change, then click Download. The output is saved with a .webp extension and your original base name.
Transparent pixels are left as they are, not filled with white. The work is done in your browser, so the file is not uploaded.
Tips for getting a good result
Test a few quality values. Flat-color graphics with sharp text can show artifacts at low settings, while photos tolerate lower values. Check the preview, zooming in on edges.
Keep your PNG master. Because the conversion is lossy at the settings shown here, keep the original PNG if you might need to edit it later.
Check where it will be used. Modern browsers display WebP, but some design tools, email clients and upload forms do not accept it.
Browser encoder. The tool uses your browser's built-in WebP encoder. If conversion fails in one browser, try another current one.
For a size-only reduction in the same format, see the image compressor.