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In-memory processing
JPG to WebP runs as JavaScript inside this tab.
Never uploaded
Safe for financials, contracts and NDAs.
No caps or sign-ups
File size is limited only by device memory.
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Convert JPG to WebP to cut image weight on websites and online stores. WebP photos are typically 25 to 35 percent smaller than JPG at the same visual quality, so pages load faster.
Also known as JPEG to WebP.
Yes. Every current version of Chrome, Edge, Firefox, Safari and Opera displays WebP, as do iOS and Android. Some older desktop apps and email clients still need JPG.
Yes. JPG to WebP runs entirely inside your web browser using JavaScript, so the file never leaves your device. It is safe for confidential documents such as contracts, financial records and IDs.
There is no fixed limit, because the file is processed on your own device. Very large files depend on your device's available memory; a modern laptop or phone handles hundreds of megabytes.
Yes. ZapConvert runs in any modern browser, including Safari on iPhone and iPad and Chrome on Android, with nothing to install. You can add several files at once and download them together as a ZIP.