📦 PNG to WebP
Convert PNG to WebP online free. Cut file size around 30% while keeping transparency. No upload, browser-based, instant results.
📦 PNG to WebP
🔧 Loading tool…
About the PNG to WebP Tool
WebP was designed by Google specifically to replace both PNG and JPEG on the web, and for most images it does exactly that — commonly delivering a 25–35% smaller file than PNG at visually identical quality, while still supporting full alpha transparency. If your site serves PNG assets, switching them to WebP is one of the cheapest page-speed wins available.
That size reduction feeds directly into Core Web Vitals. Largest Contentful Paint is frequently dominated by a single hero image, and cutting a third off its weight is measurable in real-user metrics. This tool handles the conversion locally in your browser with a quality control, so you can compare outputs and pick your own balance without uploading anything.
How to Use PNG to WebP
- Select the PNG file you want to convert.
- Adjust the quality setting. For graphics and logos, keep it high; for photographic PNGs you can push it lower and still look clean.
- Press Convert and compare the resulting file size against your original.
- Download the .webp file and deploy it.
When to Use This Tool
- Reducing page weight to improve Largest Contentful Paint and PageSpeed scores
- Converting a library of PNG assets before a site launch or redesign
- Compressing app or UI graphics where transparency must be retained
- Cutting bandwidth costs on an image-heavy site or CDN
- Preparing modern-format images for a
element with a PNG fallback
Things Worth Knowing
- Transparency is fully preserved — WebP supports an alpha channel just as PNG does.
- All current browsers support WebP. Only genuinely obsolete versions do not.
- For flat-colour graphics with very few colours, an optimised PNG can occasionally beat WebP. Compare both if the asset is critical.
Quick Facts
| Tool name | PNG to WebP |
| Category | Image Tools |
| Price | Free — no account, no trial, no watermark |
| Where it runs | Entirely in your browser (client-side) |
| Files uploaded | None — your data never leaves your device |
| File size limit | None imposed; limited only by device memory |
| Works offline | Yes, once the page has loaded |
| Platforms | Windows, macOS, Linux, Android, iOS |
Frequently Asked Questions
How much smaller will my file actually be?
For photographic PNGs, expect a 60–80% reduction. For flat graphics and logos, the typical range is 25–35%. Results vary with image content, so compare the numbers on your own files.
Does WebP keep transparent backgrounds?
Yes. WebP supports full 8-bit alpha transparency, so transparent PNGs convert cleanly without a background being filled in.
Will WebP images work for all my visitors?
Effectively yes. Every current browser supports WebP. If you need to cover very old clients, serve WebP inside a
Is WebP good for SEO?
Indirectly, and meaningfully. Google uses page experience signals including Core Web Vitals in ranking, and smaller images improve loading metrics — particularly Largest Contentful Paint.