PNG to WebP
Shrink PNGs dramatically with WebP encoding.
About PNG to WebP
Convert PNG images to WebP, typically cutting file size by 25–80% at visually identical quality. Set the quality with one slider and compare the before and after size for every file.
WebP is smaller than PNG for the same image and every current browser reads it, which makes it the obvious format for anything going on a web page.
Convert with control over quality, or losslessly.
- Processed on your deviceEverything you open or type here is handled by this page and never uploaded anywhere.
- No queue, no limitsNothing waits on a server, so the only limit is your own hardware.
- No account neededNo sign-up and no email address required.
How PNG to WebP works in your browser
The PNG is decoded and re-encoded as WebP by the browser’s own codecs. WebP has both a lossless mode, which typically beats PNG on size with pixel-identical output, and a lossy mode, which is much smaller again and discards detail.
For screenshots, diagrams and anything containing text, lossless is usually right — lossy compression smears the sharp edges of letterforms in exactly the way that looks cheap. For photographs stored as PNG, lossy WebP is often dramatically smaller at no visible cost.
Transparency survives in both modes, which is what distinguishes WebP from JPEG and makes it a genuine replacement for PNG rather than a compromise.
When to use it
Cutting the weight of screenshots and diagrams on a web page. Reducing image payload to improve page load times. Getting a transparent image smaller than PNG allows. Compressing images before attaching them, where the recipient can read WebP.
Read more about this
Frequently asked questions
How much smaller will the files be?
Typically 25–80% smaller at visually identical quality. The saving is largest on photographic images and smallest on simple graphics that PNG already compresses well.
What quality should I choose?
Keep the slider high for screenshots, logos and anything with text or sharp edges, where compression shows first. Lower it for photographs, where the size saving is much larger and the difference is not visible. There is no separate lossless switch.
Can I see what I saved?
Yes. Before and after sizes are shown for every file, so you can confirm the conversion was worth doing.