PNG to WebP Converter
Convert
The canvas previews the converted result live as you adjust the settings. Click Convert for the exact size and a before/after split — drag the divider to judge the quality, then download. The original file is never modified.
Your images are processed locally in your browser and never uploaded to any server.
WebP with alpha gives you everything PNG does (full transparency) at a fraction of the size, often 60–90% smaller for screenshots and UI graphics. Convert locally, batch included, and keep your transparent areas perfectly intact.
PNG earns its place with pixel-perfect graphics and clean transparency, but it pays for that with size: its lossless compression is inefficient on anything but the flattest images, so screenshots and detailed UI exports balloon quickly. WebP keeps the same transparency and visual result while compressing far more intelligently, which is why a PNG that was megabytes often lands in the low hundreds of kilobytes after conversion.
How to use the png to webp converter
- Upload your PNG files.
- Choose quality; transparency is preserved automatically.
- Convert and see per-file savings (PNG → WebP is usually dramatic).
- Download individually or as a ZIP.
Where the big savings come from
Screenshots, app mockups, and flat-colour UI graphics see the most dramatic drops, commonly 70–90%, because WebP handles their large same-colour regions and soft gradients much better than PNG's filters do. These are exactly the images that pile up in documentation and design handoffs, so converting them is where the storage and bandwidth wins are largest.
Stay on PNG when you genuinely need lossless guarantees, such as scientific or medical imagery, or when a tool in your pipeline predates WebP support. For everyday web and product work with a modern audience, though, WebP has effectively replaced PNG, giving you the transparency you needed PNG for at a size PNG could never reach.
Frequently asked questions
Is transparency really preserved?
Yes. WebP has a full 8-bit alpha channel, and this converter re-encodes it intact. Semi-transparent shadows, rounded corners, and anti-aliased edges all survive the conversion.
How much smaller will my PNGs get?
Screenshots and flat-color UI graphics commonly shrink 70–90%. Dense photographic PNGs see slightly less dramatic but still substantial savings, since WebP lossy handles gradients far better than PNG's lossless filters.
When should I stay with PNG?
When you need lossless guarantees (medical/scientific imaging), when tools in your pipeline predate WebP support, or for print workflows. For the web, WebP has effectively replaced PNG for new work.