Convert JPG to WebP Online

Convert JPEG images to WebP for 25–35% smaller file sizes at the same visual quality — free, private, entirely in your browser.

Convert JPG to WebP Free →Free · No signup · No upload

WebP is Google's modern image format that offers 25–35% better compression than JPEG at the same visual quality. Converting your JPG images to WebP is one of the most impactful things you can do to speed up your website. Resizor makes it easy to convert JPG to WebP online — directly in your browser, with no upload required and no images sent to any server.

The conversion uses WebAssembly (wasm-vips) for high-quality, accurate colour conversion. You can choose lossy WebP (for photographs) or lossless WebP (for graphics and screenshots). Batch conversion is supported — drop in a whole folder of JPEGs and download all the WebP files as a ZIP. It's completely free, with no watermarks and no daily limits.

How It Works

Upload Your JPG

Drop one or more JPEG/JPG files into the tool. Batch conversion is supported.

Select WebP Output

Choose WebP as the output format. Adjust quality (lossy) or use lossless mode for pixel-perfect output.

Download WebP Files

Download your converted WebP images — ready for web use with significantly smaller file sizes.

Why Choose Resizor?

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No Upload, No Server

Conversion runs entirely in your browser via WebAssembly. Your images never leave your device.

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25–35% Smaller Than JPEG

WebP delivers better quality-to-size ratio than JPEG, making pages load faster.

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Batch Convert

Convert hundreds of JPG files to WebP in one go. Download all at once as a ZIP.

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Free & No Watermark

Unlimited conversions, no registration, no watermarks — always free.

Frequently Asked Questions

Is WebP better than JPEG?

Yes, for web use. WebP achieves 25–35% better compression than JPEG at equivalent visual quality. It's supported by all modern browsers (Chrome, Firefox, Edge, Safari 14+) and is recommended by Google for web performance.

Does WebP support transparency?

Yes. WebP supports both lossy and lossless compression, and the lossless mode fully supports alpha channel transparency — something JPEG cannot do.

Will my WebP images look the same quality as my JPEG?

At an equivalent quality setting, WebP images look visually the same as JPEG but at a smaller file size. At 80% quality in Resizor, WebP output is virtually indistinguishable from the original JPEG.

Do all browsers support WebP?

Yes. As of 2024 all major browsers — Chrome, Firefox, Edge, Safari (14.1+), and Opera — support WebP. It's safe to use WebP for any modern web project.

Can I convert PNG to WebP as well?

Yes. Resizor can convert PNG, AVIF, GIF, and other formats to WebP, not just JPEG. PNG to WebP lossless is particularly useful as it typically saves 26% compared to PNG.

Convert JPG to WebP Online — Start Now

100% free, runs in your browser. No signup required.

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