FileWiftConvert PNG to WebP Online — Free, Unlimited & 100% Private
Keep the transparency, lose the file size — batch-converted locally in your browser, nothing uploaded.
Drop your files here — or click to browse
Accepts PNG · Batch as many as you like
Everything runs locally in your browser — codecs load once via WebAssembly, then conversion works even offline. Nothing is uploaded, ever.
How to convert PNG to WebP
Drop your PNGs
logos, screenshots, graphics — batches unlimited.
Tune quality
transparency is preserved automatically; lossless mode available.
Download WebP
smaller files, same visual, ready for the web.
PNG vs WebP
| PNG | WebP | |
|---|---|---|
| Compression | Lossless | Lossy VP8 or true lossless |
| Transparency | Alpha channel | Alpha channel (preserved on convert) |
| Typical size | Baseline | 25-35% smaller |
| Best for | Editing masters, screenshots | Web graphics, logos, UI assets |
FAQ
Does PNG to WebP keep transparency?
Yes — the alpha channel survives conversion, which is exactly why WebP is the go-to replacement for PNG on the web. Lossy mode compresses the visible pixels while transparency stays sharp.
Can I convert losslessly?
Yes. Toggle lossless mode and the output is bit-identical to the input PNG — typically still 20-30% smaller than the original, because WebP's lossless codec beats PNG's.
Which quality setting for graphics and logos?
For flat-color graphics, quality 85-90 lossy is visually identical and much smaller. For UI screenshots with fine text, try lossless mode. Our live size preview shows exactly what you'll get.
Why is my website faster with WebP?
Images are usually the heaviest part of a page. Swapping PNG for WebP cuts their size by a quarter to a third — improving LCP and Core Web Vitals, which Google uses for ranking.
Are my files uploaded to a server?
No. Everything runs locally in your browser. It works with your internet unplugged — the strongest possible privacy guarantee.
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No file limits · Nothing uploaded · 100% free