Convert PNG to WebP online
Convert PNG files to WebP directly in your browser. Your images never leave your device — all processing happens locally for instant, private results.
PNG is a lossless format with transparency support, standardised in 1996 and ideal for graphics, logos and screenshots. WebP is a modern format from Google (2010) offering both lossy and lossless compression, typically 25–35% smaller than JPEG or PNG. To convert PNG to WebP, drop your files into the tool above — conversion runs entirely in your browser, so nothing is ever uploaded.
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Drop your images here
or click to choose files
How to convert PNG to WebP
- 1
Drop your PNG files into the box above, or click to choose them from your device.
- 2
Adjust the quality slider if you want — the default works for most uses.
- 3
Click Convert and wait a moment while your browser processes the files.
- 4
Download each converted WebP file individually, or grab them all as a ZIP archive.
PNG vs WebP comparison
| PNG | WebP | |
|---|---|---|
| Compression | lossless | both |
| Alpha (transparency) | ✓ | ✓ |
| Animation | — | ✓ |
| Vector | — | — |
| Relative size | ~2.5× JPG | ~0.7× JPG |
| Browser support | Universal — all browsers since 1996 | Chrome 32+, Firefox 65+, Safari 14+, Edge 18+ |
- WebP files are typically smaller than PNG, which saves storage space and bandwidth.
- PNG already opens almost everywhere, so convert to WebP only when you specifically need its advantages.
PNG and WebP are both raster image formats, but they make different trade-offs in compression, transparency, animation and compatibility — the comparison table above lays out exactly how they differ. Converting between the two lets you pick the right format for each situation: keep originals in one format for archival and export copies in another for sharing or web use. Our converter runs entirely client-side using modern WebAssembly codecs, so conversion is fast, private, and works even on patchy mobile connections. There are no daily limits, no watermarks, no signup, and no ads tracking you across the web. The same engine powers every conversion on this site, and we lazy-load only the codecs needed for your specific PNG to WebP conversion — keeping the initial page download tiny.
Frequently asked questions
Is this PNG to WebP converter really free?
Yes — completely free, no signup, no watermarks, no per-day limits.
Do you upload my files to a server?
No. All conversion happens in your browser using WebAssembly. Your files never leave your device.
What is the maximum file size?
50 MB per file, with up to 20 files per batch. On mobile devices we recommend smaller files for memory reasons.
Can I convert multiple PNG files at once?
Yes — drop up to 20 files at once and download them all as a ZIP archive.
Does this work on iPhone and Android?
Yes, the converter works in any modern mobile browser including Safari and Chrome.
Will I lose quality converting from PNG to WebP?
Quality depends on the formats and your chosen quality setting. Lossless formats like PNG preserve every pixel; lossy formats like JPEG let you trade quality for smaller files.
Why convert PNG to WebP?
It depends on what you need. PNG and WebP differ in file size, transparency support, quality and compatibility — the comparison table on this page shows exactly how, so you can pick whichever fits your use case.
Is WebP better than PNG?
Neither is universally better — each makes different trade-offs. Check the comparison above: it spells out the differences in compression, transparency, animation and browser support between PNG and WebP so you can decide for your specific need.
Why is my converted WebP file a different size than the PNG original?
Each format compresses pixels differently. Switching from PNG to WebP re-encodes the image, so the output can be larger or smaller depending on the formats and the quality setting you choose — the comparison table shows the typical direction.