Drag & drop your .png files here — convert many at once — or click to choose
What is PNG, and why convert it?
PNG is a lossless raster format prized for crisp edges and true transparency, which is why it dominates logos, icons, screenshots and UI graphics. That fidelity comes at a cost: because PNG never discards data, the files can be enormous — a single full-page screenshot or a detailed graphic can easily run into several megabytes. On a website those heavy PNGs slow down every page that loads them. Converting to WebP keeps the look you designed while shedding most of the weight, so visitors get the same image in far fewer bytes.
Why convert PNG to WebP?
WebP was built for exactly this problem: web-quality images at a fraction of the file size, with transparency still on the table. Convert PNG to WebP when you want to:
- Shrink page weight dramatically — WebP often lands 60–80% smaller than the source PNG.
- Keep transparency intact for logos and overlays, thanks to WebP's alpha channel.
- Boost load speed and SEO scores that reward lean, fast-loading assets.
- Stay near-lossless when you need it by pushing the quality slider high.
If you need a format that opens in every legacy app rather than just modern browsers, PNG to JPG is the more compatible route.
PNG vs WebP vs JPG
| Format | Compression | File size | Transparency | Best for |
|---|---|---|---|---|
| WebP | Lossy or lossless | Smallest | Yes | Fast websites with transparency |
| PNG | Lossless | Large | Yes | Editing and pixel-perfect graphics |
| JPG | Lossy | Small | No | Photos, universal sharing |
How to batch convert PNG to WebP
- Drag your .png graphics into the box above, or click to select many at once.
- Set the quality slider — high values stay close to the original, lower values squeeze the files further.
- Download each WebP, or click Download all to grab the whole batch as a ZIP.
Common jobs this tool helps finish
- Optimising site graphics so heavy PNG logos and banners stop dragging down load times.
- Compressing screenshots for docs or knowledge bases without losing transparency.
- Prepping UI assets for an app or theme that prefers WebP for performance.
- Bulk-shrinking a PNG export folder before pushing a site or update live.
Is it private?
Yes. Every PNG is decoded and re-encoded to WebP right in your browser, so your files are never uploaded to a server and never stored by us. Unlike most online optimisers, nothing about your images travels off your device.
Related converters
Prefer universal compatibility? Use PNG to JPG. Going the other way to recover a lossless copy? Try WebP to PNG. You can also compress photos directly with JPG to WebP.
Frequently asked questions
How much smaller will my WebP be than the PNG?
It varies with the image, but graphics and screenshots commonly shrink by 60–80% at sensible quality settings, while still looking sharp on screen.
Does WebP keep my PNG's transparency?
Yes. WebP supports an alpha channel, so transparent areas of your PNG remain transparent after conversion.
Can WebP be lossless like PNG?
WebP supports a lossless mode, and pushing the quality slider toward 100% keeps the result extremely close to the original PNG with a smaller file.
Can I batch convert many PNG files at once?
Yes. Add as many PNG files as you like and convert them in a single batch, then download them all together as a ZIP.
Are my images uploaded?
No. Everything runs in your browser — your files never leave your device.