Convert PNG to WebP

Turn PNG files into WebP without uploading anything. Drop in one image or a whole folder, adjust the quality, and download the results.

Drop PNG images hereAdd one image or a whole batch, then pick your settings.Choose PNG imagesPNG, JPG, WebP, and AVIFStays on your device, never uploaded

What this tool does

  • PNG to WebP at full resolution
  • Batch conversion with a single zip download
  • Quality control for the output file size
  • Runs fully in the browser, no upload
  • Free, no signup, no watermark

What PNG is good at

PNG stores every pixel exactly as it was, with 8 or 16 bits per channel and a full alpha channel. That makes it the right format for screenshots, UI exports, logos, and line art, where a single softened edge or a shifted flat colour is visible. The cost is size: because it never discards detail, a photograph saved as PNG is routinely several times larger than the same photograph as JPG or WebP.

What WebP gives you

WebP has both a lossy and a lossless mode and supports transparency in both, which is what lets it replace PNG and JPG at once. At matching visual quality it is typically 25 to 35 percent smaller than JPG and meaningfully smaller than PNG for the same graphic. Its one hard limit is dimensional: neither side can exceed 16,383 pixels.

Converting PNG to WebP

WebP keeps transparency like PNG but is dramatically smaller, which usually makes it the best format for images on a website. Transparency survives the conversion, so a PNG with a cut-out subject stays cut out as WebP. The move from lossless PNG to lossy WebP is one-way: the discarded detail is gone, so keep the original if you expect to edit the image again. The result supported by every current browser, though some older desktop software still cannot open it.

Frequently asked questions

WebP keeps transparency like PNG but is dramatically smaller, which usually makes it the best format for images on a website.

Yes. WebP keeps sharp edges and transparency, and at high quality text stays crisp while the file is far smaller than the PNG. For UI assets you will edit again, keep the PNG as your master copy and publish the WebP.

No. Because the conversion happens on your own machine there is no server quota to hit. The practical limit is your device's memory, and files are processed one at a time to keep that manageable.

No. Every tool on this page runs entirely in your browser using the Canvas and Web Worker APIs. Your files are read from disk, processed in the tab, and written straight back to your downloads folder. Nothing is uploaded, stored, or logged, which also means the tool keeps working if you go offline after the page loads.

It is completely free with no signup, no account, no daily limit, and no watermark. Screenshot Studio is open source under the Apache 2.0 licence.

Related tools

WebP to PNGPNG to JPGPNG to AVIFJPG to WebPAVIF to WebPConvert Image

Need more than a quick fix? The screenshot editor adds backgrounds, frames, and shadows. You can also remove an image background.