How to convert PNG to WebP
imglogotool.com converts PNG to WebP instantly in your browser using the libwebp WebAssembly codec — the same library used by Google. No files are uploaded to any server. WebP typically produces files 25-35% smaller than PNG while maintaining identical visual quality, with full transparency support.
Open the Image Converter and drop your PNG files. Multiple files supported for batch conversion.
Select WebP as the output format. Adjust quality (default 85% is optimal for most images).
Save each file individually or download all as a ZIP.
PNG vs WebP — detailed comparison
| PNG | WebP | |
|---|---|---|
| Compression | Lossless only | Lossless + lossy |
| Transparency | Yes (alpha channel) | Yes (alpha channel) |
| Animation | No (use APNG) | Yes |
| File size (photo) | Large (500 KB typical) | 25-35% smaller |
| File size (graphic) | Small for simple graphics | 26% smaller on average |
| Browser support | 100% | 97%+ (all modern browsers) |
| Best for | Logos, icons, screenshots needing pixel-perfect quality | Web images, photos, any image where file size matters |
When to convert PNG to WebP
Web performance: Google PageSpeed Insights recommends serving images in WebP format. Converting PNG to WebP can reduce your page weight by 25-35% without visible quality loss.
Bandwidth savings: If your site serves 100,000 page views/month with 500 KB of PNG images, switching to WebP saves ~150 GB of bandwidth per month.
SEO impact: Google uses page speed as a ranking factor. Smaller images = faster load = better Core Web Vitals scores.
When NOT to convert PNG to WebP
Print workflows: Print shops typically require PNG or TIFF. WebP is a web-only format.
Pixel-perfect editing: If you need to re-edit the image later, keep the PNG original. WebP lossy compression discards data permanently.
Legacy browser support: IE 11 and very old browsers don't support WebP. Use `<picture>` element with PNG fallback if targeting these browsers.
Related conversions
JPG to WebP — convert photos from JPG to WebP for even bigger savings.
PNG to AVIF — maximum compression, 50% smaller than PNG.
WebP to PNG — convert back if you need lossless PNG.
Need to compress PNG without converting? Try the PNG Compressor — reduce size up to 80%.
Frequently asked questions
Does converting PNG to WebP lose quality?
At the default quality setting (85%), there is no visible quality difference. WebP lossy compression is perceptually lossless at high quality levels. You can also use WebP lossless mode for zero quality loss.
Does WebP support transparency?
Yes. WebP supports full alpha channel transparency, just like PNG. Converting a transparent PNG to WebP preserves the transparency.
How much smaller is WebP than PNG?
WebP is typically 25-35% smaller than PNG for photos and complex images. For simple graphics and logos, the savings can be 10-26%. Google reports WebP lossless images are 26% smaller than PNG on average.
Is WebP supported by all browsers?
WebP is supported by 97%+ of browsers: Chrome, Firefox, Safari 14+, Edge, and all mobile browsers. Only IE 11 and very old Safari versions lack support.
Can I batch convert multiple PNG files to WebP?
Yes. Drop multiple PNG files into the converter at once. All files convert automatically. Save individually or download all as a ZIP.
Are my PNG files uploaded to a server?
No. All conversion happens locally in your browser using WebAssembly codecs. Your files never leave your device.
Should I use WebP or AVIF?
WebP has better browser support (97% vs 93%) and faster encoding. AVIF produces smaller files but is slower to encode. Use WebP for broad compatibility, AVIF for maximum compression.