PNG to WebP Converter

Convert PNG images to WebP and cut file sizes dramatically, often 30-70% smaller, while keeping sharp detail. The go-to format for fast-loading websites.

Private by design: This tool runs entirely in your browser using its built-in image engine. Your files are not uploaded to a server, and nothing you convert is stored or logged. See how in-browser processing works.

How to convert PNG to WEBP

Drop your PNG files onto the upload area, or click it to browse.
Set the quality slider, 90% keeps images visually identical while still shrinking them substantially.
Click Convert, then download each WebP or everything as a ZIP.

Why WebP is the web's favorite format

WebP compresses the same image into fewer bytes than PNG, often 30-70% fewer for graphics and screenshots, while looking identical at normal viewing sizes. Smaller images mean faster page loads and better Core Web Vitals, which is why performance audits almost always recommend the switch. Every major browser has supported WebP since 2020.

Transparency survives the trip

Unlike converting to JPG, WebP fully supports alpha transparency. Logos, icons, and UI graphics with transparent backgrounds convert cleanly and keep working exactly as before: just smaller.

When to keep PNG

Keep a PNG master when you need guaranteed lossless storage for future editing, when delivering to software that doesn't accept WebP, or for print workflows. This tool's WebP output is lossy (that's where the savings come from): visually transparent at 90% quality, but not a bit-exact archive. More in our PNG vs WebP guide.

Good to know

WebP supports transparency, so transparent PNGs stay transparent.
WebP is supported by every modern browser: Chrome, Safari, Firefox, and Edge have all supported it since 2020.
This tool uses your browser's own WebP encoder. In a few browsers without one, you'll see a clear message rather than a wrongly labelled file.

Frequently asked questions

How much smaller will my images get?

It depends on the image, but WebP typically comes out 30-70% smaller than an equivalent PNG at the same visual quality, which is why it's the standard recommendation for web performance.

Does WebP keep transparency?

Yes. Unlike JPG, WebP fully supports alpha transparency, so logos and graphics with transparent backgrounds convert cleanly.

When should I stick with PNG?

Keep PNG when you need guaranteed lossless output for further editing, or when you're delivering assets to software that doesn't accept WebP.

Is anything uploaded to a server?

No. Encoding happens in your browser with its built-in WebP encoder, files never leave your device.

Is the WebP output lossless?

No. This tool produces lossy WebP, which is where the large size savings come from. At the default 90% quality the difference is not visible in normal use, but keep your PNG originals as masters.

Do Safari and iPhones support WebP?

Yes. Safari has supported WebP since version 14 (2020), alongside Chrome, Firefox, and Edge. Compatibility concerns today are about older desktop software, not browsers.

Can I email a WebP or use it in Office?

Support outside browsers is patchy, older Office versions and some email clients won't preview WebP. For documents and email, JPG is still the safer choice.

Guides for this tool

PNG vs WebP: What's the Difference?WebP does most of what PNG does at a fraction of the size, which is why performance audits keep telling you to switch. Here's what actually changes, and when PNG is still the right answer.
How to Make an Image Background TransparentA transparent background lets an image sit on anything (a coloured slide, a website, a T-shirt mock-up) without a white box around it. Getting one is a two-part problem: separating the subject, and saving in a format that can hold transparency. Most failures are the second part.

PNG to WebP is one of 15 image tools, convert between formats, then compress, resize, crop, or rotate.