PNG to WebP Converter — Free, No Upload
Save a WebP copy of a PNG for web publishing. Compression benefits vary between photographs and graphics, so the useful result is the copy whose size and visible detail fit the intended page.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
How to use this tool
Choose the PNG and output quality. Test small lettering and sharp boundaries at a close zoom, and verify alpha transparency in the destination environment when a transparent background matters.
Results and examples
Compare colors and edges with the original. The WebP is not guaranteed to be smaller, and this still-image conversion should not be treated as preservation of animation or original metadata.
Worked example
Encode an 800×600 product PNG at quality 80 and test the same-sized WebP on a web page. After converting a transparent icon, inspect its alpha edges over both light and dark backgrounds.
Limitations
- The quality-slider encoding does not promise lossless preservation of the source PNG.
- Canvas re-encoding is not an animation or original-metadata preservation workflow.
Fields
| Field | Guidance and constraints |
|---|---|
| Quality | Accepted range: 40–100 · Input step: 1 |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Is WebP always smaller than PNG?
No. Compare actual byte sizes for the particular image and encoder.
Can transparency survive?
WebP supports alpha; inspect the output edges and browser rendering.
Related tools
You do not need to start over. Continue with the tool that fits your next step.
