Private by design
Conversion happens in your browser. Your images are never uploaded to a server.
Turn JPG images into WebP in seconds, right in your browser. Nothing is uploaded.
Free · No watermark · Your file never leaves your device
To convert JPG to WebP, open the SuperPrompts image converter, add your JPG files, choose WebP as the output and download the result. JPG (JPEG) is the most common photo format: small files, no transparency. WebP is a modern web format that is usually smaller than JPG or PNG at the same quality. Converting to WebP is a quick way to make images load faster on websites while keeping them sharp. The converter runs entirely in your browser using the canvas API, so your images never leave your device and there is no upload wait. You can convert several images at once, adjust the quality, or set a target file size in KB, and crop before saving.
Conversion happens in your browser. Your images are never uploaded to a server.
Convert many JPG files to WebP in one go.
Pick a quality level or a target file size in KB, and crop before you save.
Yes. It is free, with no watermark and no file upload.
No. The conversion runs on your device in the browser, so the files never leave your computer or phone.
Yes. Add multiple images and convert them together.
JPG and WebP use compression. At high quality the difference is hard to see; lower the quality only if you need a smaller file.
Image Converter
Convert, crop and shrink images right in your browser. Your files never leave your device.
JPG to PNG
Turn JPG images into PNG in seconds, right in your browser. Nothing is uploaded.
PNG to JPG
Turn PNG images into JPG in seconds, right in your browser. Nothing is uploaded.
WebP to JPG
Turn WebP images into JPG in seconds, right in your browser. Nothing is uploaded.
Part of the free SuperPrompts toolbox: prompt optimizer, writing tools and 30+ PDF tools.
Open JPG to WebP