PNG to WebP Converter
Convert PNG graphics to WebP, keeping transparency while cutting file size sharply.
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
| File name | Size | Convert to |
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Checking files and selected output formats.
What to expect when converting PNG to WEBP
A 5 MB PNG typically becomes 1.5 – 2.5 MB as WebP (lossless mode) or 300 – 700 KB (lossy).
Quality: WebP supports both lossless and lossy. Lossless WebP is smaller than PNG with identical pixels. Lossy WebP is smaller still with minimal visible difference at quality 80+.
Best for: modern web, every modern browser (Chrome, Firefox, Safari, Edge) supports WebP natively.
Avoid when: you need a file that opens in older software (pre-2020 Photoshop, very old Windows), or where universal compatibility matters more than file size.
Tip: For web pages, WebP saves bandwidth without sacrificing visual quality. For email or downloads, stick with PNG/JPG for compatibility.
PNG to WEBP - Web performance for logo / UI assets
WebP has a lossless mode built for precisely the kind of thing PNG is used for, and it holds transparency while cutting around 26% of the weight. Website logos, UI screenshots in documentation and product renders with an alpha channel all come through intact. As with JPG, serve the WebP to modern browsers and leave a PNG fallback in the <picture> tag.
PNG to WebP: the web performance conversion
WebP's lossy mode produces files 25-35% smaller than JPG at equivalent quality; its lossless mode produces files 25% smaller than PNG. For web images, this translates directly to faster page loads and better Core Web Vitals scores. WebP preserves alpha-channel transparency (unlike JPG), so it's a direct replacement for transparent PNGs at a fraction of the file size. The VP8L lossless codec uses predictive coding and entropy encoding that outperform PNG's DEFLATE algorithm for most image types.
Convert PNG to WebP for any image that will be served on a website. The size reduction directly improves load times. Use lossy WebP for photographs and lossless WebP for screenshots, diagrams, and graphics with sharp text. Browser support is 97%+, serve the original PNG as a fallback for the remaining 3% using the HTML picture element.
PNG vs WebP: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | PNG | WebP |
|---|---|---|
| Full name | Portable Network Graphics | WebP (Google) |
| Year introduced | 1996 | 2010 |
| Developer / standard body | PNG Development Group / W3C | |
| MIME type | image/png | image/webp |
| File extension | .png | .webp |
| Compression | Lossless (DEFLATE) | Lossy or lossless (VP8/VP8L) |
| Color / data depth | 24-bit truecolor + 8-bit alpha | 24-bit + 8-bit alpha |
| Max dimensions / size | 2,147,483,647 × 2,147,483,647 px | 16,383 × 16,383 px |
| Transparency | Yes | Yes |
| Animation | APNG extension only | Yes |
| Standard / specification | W3C / ISO/IEC 15948 | RFC 9649 (lossless), RFC 6386 (VP8) |
| Best for | Logos, screenshots, graphics with transparency or sharp edges | Modern web, 25–35% smaller than JPG/PNG at equivalent quality |
Use PNG when
- You're editing the image and need a lossless source
- The image will pass through tools that don't support WebP
- You need it to open on legacy systems (very old browsers, some enterprise software)
- You're preparing for print, PNG plays nicer with print pipelines
Use WebP when
- The image is for a modern website and page-weight matters
- You're serving hero images, thumbnails, or gallery photos to visitors
- You'd have used a GIF but want proper compression
- You care about Core Web Vitals (LCP is directly affected by image size)
For any new website in 2026, WebP is the right default, you'll cut image weight roughly a third with zero visible quality loss. Keep PNG as your editing master, and export WebP for delivery. Don't switch existing PNGs to WebP wholesale unless page speed is actively a problem; the compatibility trade-off usually isn't worth the migration work.