Convert JPG to WebP - Free Online

What this tool does

Convert JPG to WebP in your browser. WebP is typically 25-35% smaller than JPG at the same visual quality. Adjust quality, batch-convert and download as a ZIP.

Private browser-based processing

Your images are processed locally in your browser. Files are not uploaded to PhotoTools.org servers, and the finished result is generated on your device.

When to convert JPG to WebP

WebP delivers a real file-size reduction over JPG at matching visual quality. For websites, that means faster page loads, lower bandwidth bills, and better Core Web Vitals scores. For mobile apps, it means quicker downloads and lower data use.

Common situations: optimising a photo gallery for a personal site, batch-shrinking a folder of JPGs before uploading to a CDN, preparing assets for a static-site build, or reducing the size of email attachments.

Quality and file-size trade-offs

WebP at 90% quality is typically 25-35% smaller than JPG at 90%. At 80% the savings climb to 40-50% with little visible difference. Past 70%, compression artefacts can become visible on faces, skies and other smooth gradients.

For web image delivery, 80-85% WebP is the usual default. For photo archives where size matters less, push to 90% and keep the larger file for fidelity.

Browser and platform support

Every modern browser (Chrome, Edge, Firefox, Safari, Opera) supports WebP, so it is safe for any contemporary website or web app. Some legacy email clients, older Android versions and a handful of corporate apps still reject WebP, so stay on JPG for those audiences.

For maximum compatibility, you can serve WebP to modern browsers via a picture element with a JPG fallback. Most static-site generators and image CDNs support this pattern out of the box.

How the conversion works in your browser

The tool decodes the JPG using the browser Canvas API and re-encodes it as a WebP with your chosen quality setting. Native browser WebP encoding is fast and produces standard files that work everywhere WebP is supported.

EXIF metadata is dropped during re-encoding, which removes camera, lens and GPS fields from the WebP. If you need to preserve metadata, save the source JPG separately.

Batch convert and ZIP download

When you have a folder of JPGs to optimise for the web, drop them in at once. Each becomes a card with its own original and converted size, so you can see the savings file by file. Click Convert all to process the batch.

When the batch finishes, the bottom bar offers a single ZIP download with every WebP file. This is the fastest way to bundle a folder for a CDN upload, a deploy, or an image-optimisation step in a static-site pipeline.

Frequently asked questions