PNG to WebP Converter
Convert PNG images to WebP for dramatically smaller files that still keep transparency — ideal for logos, icons and graphics on fast websites.
To convert PNG to WebP, add your files, pick a quality, click Convert, and download much smaller WebP images with transparency preserved — all in your browser.
Drop your files here, or choose files
Convert to any format — pick the output above.
Need a different pairing? Browse all image converters.
Zero Server Uploads
Files process in local RAM
Instant WASM Speed
No waiting queues or lags
Unlimited Batching
Convert files without limits
Suggest a Feature or Improvement for PNG to WebP
Need custom options, higher limits, or extra format support? Let our engineering team know!
How to use PNG to WebP
- 1Add your PNG files.
- 2Choose a WebP quality level.
- 3Click Convert; images are re-encoded with transparency kept.
- 4Download each WebP, or grab them all as a ZIP.
Why convert PNG to WebP
PNG is lossless and often large. WebP keeps an alpha channel like PNG but compresses far more efficiently, so transparent graphics get much smaller without a visible quality drop.
Smaller images mean faster pages and better search rankings.
How it works
Add your PNG files, pick a quality level, and each image is re-encoded as WebP on your device with its transparency preserved.
Format comparison
| PNG (source) | WebP (output) | |
|---|---|---|
| Compression | Lossless only | Lossy or lossless |
| Transparency | Yes | Yes (both modes) |
| Typical photo size | ~2.9 MB | ~19 KB (lossy) |
| Typical graphic size | ~36 KB | ~8 KB |
| Support | Universal | All current browsers |
Input & output compatibility
Accepts
- PNG (with or without transparency)
Produces
- WebP (lossy, quality 60–100)
WebP keeps PNG's transparency while cutting file size dramatically — ideal for web delivery.
Real file-size examples
WebP beats PNG on both photographic and flat content — measured on the same samples:
Photograph — 1600 × 1067 px
Flat graphic with text — 1200 × 900 px
WebP is the best all-round web format: far smaller than PNG, keeps transparency, and — unlike JPG — stays clean on text and sharp edges.
When should you use each format?
There is no single best format — each wins for a different kind of image. Use this as a quick decision guide:
Common problems & solutions
An old app won't open the WebP
A few legacy desktop programs still lack WebP support. Every current browser handles it; for maximum compatibility with old software, use PNG or JPG instead.
Transparency disappeared
Keep quality reasonably high — WebP supports alpha in both lossy and lossless modes, so transparency is preserved through conversion.
Is this private?
This PNG-to-WebP conversion runs entirely in your browser using the built-in canvas and WebAssembly engine. Your files are read from local memory, processed on your own device, and never uploaded to a server.
Because nothing leaves your machine, there is no upload wait, no queue, and no copy of your image sitting in someone else's storage. Closing the tab discards everything — we keep no logs of the files you open and have no account system that could retain them.
That also means it works offline once the page has loaded, and there is no per-file limit imposed by an upload quota — the only ceiling is your device's available memory.
Frequently Asked Questions
Are my images uploaded to a server?
No. Every conversion runs locally in your browser using your device's own processor. Your images never leave your computer or phone, and nothing is stored on our servers.
Does WebP keep PNG transparency?
Yes. WebP supports an alpha channel, so transparent areas in your PNG are preserved in the WebP output.
How much smaller will the WebP be?
It varies by image, but WebP is often several times smaller than PNG for the same graphic while looking identical.
Can I convert several images at once?
Yes. Drop or select multiple files and they'll be processed in a controlled queue so your browser stays responsive. Each file shows its own progress, and you can download them individually or all together as a ZIP.