Image to WebP

WebP is a modern image format built for the web that typically produces smaller files than JPG or PNG at similar visual quality. It supports lossy compression like JPG and transparency like PNG in a single format. Most browsers, phones, and content management systems support WebP today, which is why many websites now serve it by default for faster page loads.

Smaller image files mean faster page loads, less bandwidth use, and better scores on web performance checks. This matters for blogs, online stores, and portfolios, where every extra kilobyte of image weight can slow a page down, especially over mobile connections.

Web developers and site owners preparing images for a faster site, bloggers replacing heavy JPG photos, and anyone told by a page speed tool to serve images in a next-gen format.

WebP usually produces a smaller file than JPG at the same visual quality, helping pages load faster. JPG still has an edge for maximum compatibility with very old software that has no WebP support.

It uses the same conversion engine focused specifically on WebP output for people who already know they want WebP. Image Converter also offers JPG and PNG output if you need more flexibility.

No. Conversion runs locally in your browser. Your photos are not sent to Justools servers.

Browsers handle one download at a time, so converting several images bundles the WebP outputs into a single ZIP file.

WebP quality is adjustable, so lower settings shrink the file further but show more compression artifacts. Test a couple of quality levels on one image before batch converting many photos.