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JPG to WebP Converter

Convert JPG photos to WebP for a website: usually a quarter to a third smaller at the same look, several at once. Nothing is uploaded.

Private · on device. Runs in your browser: your file is not uploaded. No sign-up.

JPG pictures, one or several at once
Converted on this device. Your JPG pictures are decoded and saved again by your own browser, inside this page. Nothing is uploaded, and it keeps working offline once the page has loaded.

JPG to WebP: at a glance

What it does
Convert JPG photos to WebP for a website: usually a quarter to a third smaller at the same look, several at once.
Price
Free, with no limit on use
Sign-up
Not needed
Your files
Processed in your browser and not uploaded to a server
Works on
Android, iPhone, iPad, Windows, Mac and Linux, in any modern browser
Made by
The Daily Toolbox (www.thedailytoolbox.com)

Why WebP for a website

At the same visual quality, a WebP is usually 25 to 35 per cent smaller than a JPG. Smaller pictures make pages load faster, which visitors notice on mobile data and which Google measures as part of page experience. Every current browser shows WebP.

High (85%) is a good default for photos on a website. Converting an already compressed JPG to WebP gives the most saving on large photos; a tiny thumbnail may barely change.

When not to use WebP

Do not send WebP to an official upload form. Exam, job and government portals almost always want JPG or PDF, and many reject WebP without saying why. Older Windows photo viewers and some printing services do not open it either. For those, keep JPG.

Some browsers, Safari among them, can show WebP but cannot save it. If yours cannot, the converter says so instead of quietly giving you a PNG.

Frequently asked questions

How much smaller will my pictures be?

Usually a quarter to a third smaller than the JPG at a similar look. The exact size of each result is shown in the list, so you can compare.

Is my picture uploaded?

No. The pictures are read and saved again by your own browser, inside this page, and are never sent to a server. You can turn off Wi-Fi once the page has loaded and it still works.

Can I use WebP for an exam or job application?

Usually not: most portals accept only JPG (or PDF). Keep JPG for those, and use WebP for your own website or blog.

Does it work on iPhone?

Saving WebP needs a browser that can write it. Chrome, Edge and Firefox can on computers and Android; Safari may not, and the page tells you if so rather than giving you a different format.

Is the JPG to WebP free?

Yes. The JPG to WebP on The Daily Toolbox is free to use as often as you like, with no watermark and no file limit beyond what your device can handle.

Do I need to sign up or install anything?

No. It works in your web browser on a phone or computer, with no account and nothing to install. You can add the site to your home screen to open it like an app.