Best WebP Converter

The best free WebP converter creates and opens WebP files in your browser. Convert JPG, PNG or AVIF to WebP and back, with no uploads.

By AlexUpdated August 25, 2026

The best WebP converter creates and opens WebP locally, giving you small web images with broad support and no uploads.

How it works

The short answer

The best WebP converter creates WebP from JPG, PNG or AVIF and opens WebP back to other formats, entirely in your browser with no uploads. It delivers small web images with broad browser support.

Why WebP

WebP compresses web images smaller than JPG or PNG at similar quality, and it is supported by all modern browsers. It also supports transparency and a lossless mode, so it suits both photos and graphics.

Create WebP

Convert JPG, PNG or AVIF to WebP to shrink your site images. Choose lossy for photos or lossless for graphics, and the codec runs locally on your device.

Open WebP

Older software sometimes cannot open WebP. Convert WebP to JPG or PNG when you need to share or edit in that software, or send it somewhere without WebP support.

Privacy

WebP encoding runs locally in your browser, so your images are never uploaded and you can convert as many as you like without limits or an account.

Frequently asked questions

What is the best free WebP converter?

The best one is private and unlimited. The WebP converters here run in your browser with no uploads.

Is WebP smaller than JPG?

Usually yes. WebP is often 25 to 35 percent smaller than JPG at similar quality.

Does WebP keep transparency?

Yes. WebP supports transparency, so logos and icons convert cleanly.

Should I use WebP or AVIF?

WebP is supported more broadly, while AVIF is smaller for photos. For maximum compatibility, WebP is the safe choice.