When this tool is useful
Reducing web image transfer size when target browsers accept WebP and visual comparison is possible.
How local processing works
The browser decodes PNG pixels and encodes a new WebP using the selected quality.
How to use it
- Prepare Convert PNG to WebP: Work from a copy and confirm quality, alpha edges, flat-color text or logos, target support, source/output bytes, and dimensions. Keep the source unchanged.
- Apply Convert PNG to WebP: Process locally in the browser. The browser decodes PNG pixels and encodes a new WebP using the selected quality.
- Download and verify: Save under a new name. Compare at 100% and 200%, inspect transparent edges and flat colors, confirm dimensions, then measure actual byte savings.
Important limitations
Quality encoding can introduce artifacts; metadata may be removed, tiny graphics can grow, and older consumers may reject WebP.
Verify the downloaded result
Compare at 100% and 200%, inspect transparent edges and flat colors, confirm dimensions, then measure actual byte savings.
Private by design
Your files stay in this browser. The tool does not upload the source or output to our servers.
Questions and answers
When should I use Convert PNG to WebP?
Reducing web image transfer size when target browsers accept WebP and visual comparison is possible.
What does Convert PNG to WebP change?
The browser decodes PNG pixels and encodes a new WebP using the selected quality.
Which limits and settings matter?
quality, alpha edges, flat-color text or logos, target support, source/output bytes, and dimensions. Quality encoding can introduce artifacts; metadata may be removed, tiny graphics can grow, and older consumers may reject WebP.
How do I verify the result?
Compare at 100% and 200%, inspect transparent edges and flat colors, confirm dimensions, then measure actual byte savings.