Image Conversion
Convert PNG to WebP
WebP is the natural replacement for PNG on the web: it keeps the alpha channel that PNG is usually chosen for, while producing much smaller files. Interface graphics, illustrations and screenshots benefit the most.
Everything is converted locally in your browser, so even unpublished design assets stay on your machine.
Drag images here
Batch conversion supported · files never leave your device
How to use this tool
- 1Add the PNG files you want to convert.
- 2Set quality — 90 for graphics with sharp edges, 80 for photographic PNGs.
- 3Press Convert.
- 4Download the WebP files individually or as a ZIP archive.
What PNG to WebP actually changes
PNG is lossless and encodes every pixel exactly, which makes it dependable but heavy. WebP can store the same transparency while applying modern predictive compression to the colour data. For a typical UI screenshot or a flat illustration, the result is frequently a third to a fifth of the original size with no visible difference at 100% zoom.
Where the savings come from
| Source | PNG | WebP quality 90 |
|---|---|---|
| 1440px app screenshot | ~1.1 MB | ~180 KB |
| Transparent logo, 800px | ~90 KB | ~28 KB |
| Flat vector illustration export | ~450 KB | ~70 KB |
When to keep the PNG
- Favicons and tiny icons, where PNG is already minimal.
- Assets for email clients, many of which still fail to render WebP.
- Master files that will be edited again — keep a lossless original and export WebP only for delivery.
- Images that must be opened by older desktop applications or print workflows.
Practical examples
A documentation site with dozens of full-width screenshots is one of the clearest wins: converting the whole folder can remove several megabytes from each page. A product designer exporting transparent mockups for a landing page gets the same visual result at a fraction of the transfer cost. If you later need the lossless original format back, use WebP to PNG, and to squeeze existing WebP files further try the WebP compressor.
Frequently Asked Questions
Is transparency preserved?
Yes. WebP supports an 8-bit alpha channel, so logos and cut-out graphics keep their transparent background exactly as they did in PNG.
Is the WebP output lossless?
This converter produces lossy WebP with a quality setting. For flat graphics, quality 90 and above is normally indistinguishable from the PNG source while remaining much smaller.
Why did my icon get bigger?
Very small images with few colours are already near-optimal as PNG. Below roughly 5 KB, the WebP container overhead can outweigh the compression gain — keep the PNG in that case.
Can I still use the PNG as a fallback?
Yes, and for email templates or older desktop software you probably should. Keep both files and reference the WebP first inside a picture element.