PNG to WebP Converter
Convert PNG to WebP in your browser and make the file much smaller while keeping transparency intact — no upload, no signup, and full resolution kept. Your image never leaves your device.
Drag and drop PNG images here, paste from your clipboard, or
Why convert PNG to WebP?
PNG is lossless, which makes it the right format for screenshots, logos, and anything with transparency — but that precision costs bytes. WebP supports the same alpha channel while compressing far more efficiently, so a transparent logo or a photo saved as PNG can shrink by 70–90% without a visible difference. Smaller images mean faster pages, safer uploads, and lighter email attachments.
Transparency is preserved
Unlike JPG, WebP has a real alpha channel, so this converter does not flatten transparency onto a background colour — the transparent areas stay transparent. That makes it the natural upgrade path for transparent PNGs destined for the web. If you need a JPG instead (which cannot keep transparency), the PNG to JPG converter lets you choose the colour that replaces it.
Lossy vs lossless: choose per image
This converter uses WebP's lossy mode with a quality slider, which is where the dramatic savings come from. For photos and gradients the result is visually identical at the default 90%. For screenshots, line art, and pixel-precise UI assets, compression can soften edges — keep those as PNG, or compare the live preview before you download. When a strict file-size limit applies, the image compressor can hit an exact size on the nose.
Nothing is uploaded
The conversion runs entirely in your browser — no server, no upload, no queue, and no file-size limit imposed by anyone but your own device. It also keeps working offline once the page has loaded. Going the other way? The WebP to PNG converter restores a lossless PNG, and the JPG to WebP converter handles photos that have no transparency.
Frequently asked questions
How do I convert a PNG to WebP without uploading it?
Drop the .png file onto the box above and the WebP is created on your device in about a second. The browser decodes the PNG and re-encodes it as WebP locally, so the image is never sent to a server and nothing is stored or logged.
Does the transparent background survive the conversion?
Yes. WebP supports an alpha channel, so transparent areas are carried through untouched — this converter does not paint a background behind them. A transparent logo or icon becomes a WebP with exactly the same transparency, just in a smaller file.
Is WebP smaller than PNG?
For photographic or gradient-heavy images, dramatically smaller — often 70–90% less. For flat graphics like logos and icons, PNG is already efficient, so the lossy WebP produced here may be smaller but not always by a wide margin. The size of both files is shown side by side so you can judge the actual saving before downloading.
Does converting PNG to WebP lose quality?
The default 90% quality is tuned to look identical to the PNG at normal viewing sizes. Because WebP here is lossy, fine text and hard edges can soften slightly — if the image is a screenshot or line art where every pixel matters, keep the PNG or check the preview before downloading.
Will a WebP file open everywhere?
Every modern browser displays WebP, including Safari and all mobile browsers, which makes it ideal for websites, apps, and email signatures. Some older desktop editors, office documents, and upload forms still reject .webp, so keep the original PNG if the file is going somewhere unknown.
Can I convert several PNG files at once?
Select one PNG for the full before/after preview, or select several at once (or paste them) to convert the batch and download all the WebPs as a ZIP. Each conversion runs locally in about a second and uses no upload bandwidth.