PNG to WebP Converter

Convert PNG images to smaller WebP files entirely in your browser — transparency preserved, adjustable quality, unlimited batch conversion and ZIP download. Nothing uploads.

Drop PNG images to convert

or click to choose · drag a whole folder

.png accepted

100% in your browser
No upload, no signup
Transparency preserved
Adjustable quality

Why Convert PNG to WebP?

PNG is the go-to format for logos, icons, screenshots and anything with a transparent background — but it's also heavy. A full-colour PNG can be several times larger than it needs to be on the web. Converting PNG to WebP keeps the transparency intact while cutting the file size dramatically, often by 50 percent or more.

WebP is the only modern format that matches PNG's transparency support while compressing like a photo format. That means you can serve crisp logos and UI graphics that load far faster, improving page speed and Core Web Vitals without sacrificing the alpha channel that makes PNG useful in the first place.

This tool does the PNG to WebP conversion in your browser in seconds — transparency preserved, quality under your control, and no upload required for a single icon or a whole asset library.

PNG vs WebP: What's the Difference?

PNG is a lossless format with full transparency, ideal for graphics but often large. WebP is Google's modern format that also supports transparency, yet compresses far smaller — a better fit for the same images on the web.

PNG never throws a pixel away, which keeps logos and screenshots razor sharp but makes files big. WebP can work either lossily or near-losslessly, and crucially it carries an alpha channel just like PNG — so a transparent PNG becomes a transparent WebP, only smaller.

For editing and archiving, keep the PNG. For publishing on a website or in an app, convert PNG to WebP: you get the same transparent graphic at a fraction of the weight, with the quality slider letting you decide exactly where on the size-versus-detail curve to land.

How to Convert PNG to WebP in 3 Steps

There's nothing to install and no account to create. Here's how to convert PNG to WebP from any device with a modern browser.

Add your PNG files

Drag your graphics — or a whole folder — onto the box above, or click to browse. Everything stays on your device; nothing is uploaded to a server.

Pick a quality level

Use the slider to balance size against detail. 90 keeps edges and transparency crisp; push it to 100 for near-lossless, or lower it for an even smaller file.

Convert and download

Each PNG is re-encoded as WebP right in your browser, with transparency carried through. Download individually or grab them all as a ZIP.

Pro tip: Need to go the other way and turn a WebP back into a PNG? Use our WebP to PNG tool.

Transparency Preserved, Size Cut

The whole point of PNG is the alpha channel, and this converter keeps it. When you convert PNG to WebP, transparent areas stay transparent — no white box appears behind your logo or icon. To prove it, each result is shown on a checkerboard backdrop, so you can see the transparency survived exactly.

What changes is the weight. WebP compresses transparent graphics far more efficiently than PNG, so the same logo or screenshot comes out much smaller. With the quality slider you control the trade-off: near-lossless at 100, or progressively smaller as you ease it down. The tool reports the bytes saved on every file.

PNG to WebP is ideal for:

Logos & icons
UI graphics
Transparent overlays
Screenshots
Web stickers

PNG to WebP on Windows, Mac & in Bulk

The same browser tool works everywhere. Here's what it handles in each case.

§ 01

On Windows 10 & 11

No image editor required — the browser converts PNG to WebP on Windows directly, transparency and all, straight from File Explorer.

§ 02

On Mac

Preview exports one file at a time and can flatten transparency. Drop a whole folder here instead for a batch that keeps every alpha channel, downloaded as one ZIP.

§ 03

For whole sites

Optimising an icon set or a UI library? Add hundreds of PNGs at once — there's no server, so there's no batch cap and nothing waits in a queue.

Your Images Never Leave Your Device

Most PNG to WebP converters in the top results upload your files to a server, then promise to delete them later. This tool removes the need for that promise: your images are converted by your own browser's canvas, so nothing is ever transmitted.

Because nothing is uploaded, there's no size cap, no queue, and no account to create — and the tool keeps working even if your connection drops after the page loads.

§ 01

On-device only

Conversion happens in your browser. No image is ever sent to us or anyone else.

§ 02

No limits

No file-size cap and no batch limit, because there's no server doing the work.

§ 03

Nothing stored

We can't keep what we never receive. Close the tab and every trace is gone.

Frequently Asked Questions

Is this PNG to WebP converter free?⌄

Yes — completely free with no signup, no watermark and no daily limit. Because the conversion runs in your browser instead of on our servers, there's no per-file cost for us to pass on to you.

Does it keep the transparent background?⌄

Yes. WebP supports an alpha channel just like PNG, so transparent areas stay transparent. Each result is shown on a checkerboard so you can confirm the transparency was preserved.

Do my images get uploaded anywhere?⌄

No. Your PNG files are converted entirely on your own device using the browser's canvas. They never touch a server, which is why there are no size or count limits — and why it still works offline after the page loads.

How much smaller will the WebP be?⌄

Transparent PNGs often shrink by 50 percent or more when converted to WebP, though the exact saving depends on the image and the quality slider. The tool shows the bytes saved on each file.

Is PNG to WebP lossless?⌄

It can be near-lossless. At quality 100 the WebP keeps virtually all the detail; lower the slider to trade a little quality for a smaller file. Either way, transparency is preserved.

Can I batch convert many PNG files to WebP?⌄

Yes. Add as many PNGs as you like — or drag a whole folder — convert them in one pass, and download everything as a single ZIP. There's no 20 or 200-file cap.

Will the WebP work on every browser?⌄

Yes. Chrome, Edge, Firefox and Safari have supported WebP — including transparency — for years, so it's safe to use on any modern website or app.

Can I convert WebP back to PNG?⌄

Yes, use our WebP to PNG tool. It reverses the process losslessly and keeps the transparency, which is handy when you need a PNG for editing or an app that doesn't accept WebP.

Ready to convert your PNG images?

Drop your files into the converter — transparent, private, and with no limits.

Back to the converter

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