UlvixorJPG to WebP Converter
Upload a JPG image and convert it to WebP with a single click, directly in your browser using canvas. WebP usually produces lighter files than JPG with similar visual quality. The file is never uploaded to any server.
How it works
- Select a JPG image from your device using the file picker.
- The conversion starts automatically as soon as you select the file.
- The image is drawn onto a hidden <canvas> and re-encoded as WebP with canvas.toBlob().
- A preview of the result is shown along with the original file size and the new WebP file size.
- Download the .webp file with a single click.
Use cases
- Reduce the size of JPG photos before uploading them to a website to improve load times.
- Optimize images in a catalog or gallery that supports WebP.
- Convert photos for modern platforms or CMSs that recommend WebP for better performance.
- Compare the size of the same image in JPG and WebP before deciding which format to use.
Use cases
- Reduce the size of JPG photos before uploading them to a website to improve load times.
- Optimize images in a catalog or gallery that supports WebP.
- Convert photos for modern platforms or CMSs that recommend WebP for better performance.
- Compare the size of the same image in JPG and WebP before deciding which format to use.
Common mistakes
- Expecting every browser or old program to be able to open the resulting WebP.WebP is supported by all modern browsers, but some older editing programs or viewers still don't support it. If you need maximum compatibility, keep a JPG copy as well.
- Converting to WebP expecting to recover detail the original JPG had already lost from its own compression.The conversion re-encodes the pixels that already exist in the JPG; it can't reconstruct information the original JPG compression already discarded.
- Assuming the WebP file will always be lighter than the original JPG.In the vast majority of cases WebP is lighter, but in very simple, low-color images the difference can be minimal. The tool shows the size of both files so you can compare directly.
Frequently asked questions
No. The conversion happens entirely in your browser via canvas. The original file is never sent to any server.
It depends on the image, but WebP typically produces files 25% to 35% lighter than an equivalent JPG with similar visual quality. The tool shows the exact size of both files so you can compare.
Yes, all modern browsers (Chrome, Firefox, Safari, Edge) support WebP natively. Only very old versions of some browsers or desktop software may not recognize it.
No, this tool applies a direct one-click conversion with a fixed quality designed for a good balance between size and sharpness. If you need more control, use the Image Compressor.
Alternatives
Tools like Squoosh (from Google) or editors like GIMP also export to WebP. This tool is handy for a quick, one-off conversion: you select the JPG and download the WebP in seconds, with nothing to install and no image uploaded to a server.