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ImageDoctor

JPG to WebP Converter

Convert JPG photos to WebP for faster web pages — one image or a whole folder.

Drop JPG images to convert to WebP

Add JPG images and they're saved as WebP. Compare the sizes before you download.

Processed locally in your browser

JPG · PNG · WebP · AVIF · GIF · BMP · TIFF · SVG

Common conversions

Converting a transparent PNG to JPG flattens transparency onto a background colour you choose. Animated GIFs are flattened to their first frame.

Converting JPG to WebP

Add your JPGs above and download WebP files. At matched visual quality, WebP is typically 25–34% smaller than JPEG in Google's own measurements — the saving that makes it worth switching a website's photos over.

Getting a real saving

  • Start from the best copy you have. JPEG and lossy WebP both discard detail; converting one to the other discards a little more. Converting a camera original gives a better result than converting a JPEG that has already been compressed hard.
  • Use quality 75–85 for web photos. Zoom to 100% and compare. Pushing to 95 or 100 can make the WebP larger than the JPEG you started with.
  • Resize first if the image is oversized. A 4000 px photo shown 1200 px wide wastes far more bytes than the format does. The Image Optimizer resizes, converts to WebP and strips metadata in one step.

Where WebP works — and where to keep a JPG

Every current browser displays WebP, and most website builders and content management systems accept it (WordPress has since version 5.8). Keep a JPEG version for anything that leaves the web: email attachments, print services, and upload forms that list only JPG and PNG. More on the format in the WebP reference.

Common questions

Typically 25–34% at the same visual quality, according to Google's WebP study, but it depends on the image and on how the JPG was saved. Heavily compressed JPGs shrink less.

A little, because both formats are lossy and the image is re-encoded. At quality 80–85 the difference is not visible at normal size. Convert from your highest-quality original.

Yes, but each lossy conversion loses a little more. Keep your original JPGs rather than converting back and forth.