Convert JPG to WebP

Lighten your website’s photos by converting them to WebP: same visual result, much smaller files, faster pages.

Drop your JPG files here

Or choose them, or paste an image (Ctrl + V or ⌘ + V).

Up to 20 files of 50 MB each (10 files of 30 MB on mobile).

The lower the quality, the smaller the file.

Longest side, proportions kept. Never enlarged.

Off by default to protect your privacy: a photo often contains the GPS location where it was taken, the camera model and the date. They are removed unless you tick this box.

    100% local processing, nothing is uploaded

    How does it work?

    JPEG (Joint Photographic Experts Group)

    JPG (or JPEG) has been the universal photo format since the 1990s. Its lossy compression greatly reduces the size of photos by discarding barely visible details. It does not support transparency and degrades slightly with every re-save. Every device, program and website can read it.

    WebP

    WebP, created by Google, was designed for the web. It offers lossy or lossless compression, transparency and animation, with files 25 to 35% smaller than a JPG of comparable quality. Every current browser reads it, but some older software (viewers, office programs, printing services) cannot open it yet.

    JPG or WebP: which format should you choose?

    Keep your originals as JPG: it is the most compatible format for archiving, printing and exchanging files.

    Use WebP for images published on a website: at the same visual quality they are 25 to 35% smaller, pages load faster and performance metrics (Core Web Vitals) improve. Every current browser displays it.

    How does the conversion work?

    1. Drop your JPG files in the area provided, choose them or paste an image: several files at once if you like.
    2. Adjust the options if needed: they apply to every file in the list, which are converted again automatically.
    3. Download each WebP file, or all of them at once in a ZIP archive.

    The conversion takes place in your browser. For your information:

    • The real format of each file is checked from its content, not its extension.
    • If your browser cannot create WebP itself (Safari, for example), a free WebAssembly encoder takes over automatically.
    • The photo’s orientation is applied: the converted image displays the right way up everywhere.

    Examples

    Speeding up a website’s home page

    Your 1,920 × 1,080 px JPG banner weighs 420 KB. Converted to WebP at quality 80, it drops to about 260 KB (−38%) and looks identical to the eye.

    Optimizing a gallery of 40 photos

    Your 40 JPG reportage photos (3 MB each, 6,000 px wide) are converted to WebP with a maximum size of 1,920 px: about 250 KB per photo, taking the gallery from 120 MB to 10 MB.

    Frequently asked questions

    Do all browsers display WebP?

    Yes: Chrome, Edge, Firefox, Opera and Safari (since macOS Big Sur and iOS 14) display it. Only very old browsers, such as Internet Explorer, do not support it.

    How much smaller will my files be?

    Usually 25 to 35% at comparable visual quality, sometimes more for large images. Combine the conversion with the “Maximum size” option for much bigger savings.

    Should I delete my JPGs after converting?

    No, keep the originals: they remain useful for printing, for programs that cannot read WebP, or for a new conversion with different settings.

    Does the conversion work on iPhone?

    Yes. Safari cannot create WebP itself, so a free WebAssembly encoder is loaded automatically, and the conversion then runs on your iPhone just like on a computer.

    Are my JPG files uploaded to a server?

    No. The conversion runs entirely in your browser, on your device: your files are never uploaded, stored or viewed by anyone. You can check this in the “Network” tab of your browser’s developer tools: no file appears there. By default, metadata (GPS location, camera, date) is also removed from the converted file; you can choose to keep it.

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