Image to WebP Converter

WebP is a modern image format created by Google that makes pictures smaller without making them look worse. If you have ever waited for a slow website to load on your phone, large image files are usually the reason. WebP files are 25-35% smaller than traditional JPEG images at the same visual quality. Converting your images to WebP before uploading them to a website, blog, or online store makes your pages load faster and uses less of your visitors' mobile data.

Using Krunkit to convert images to WebP takes three steps. First, drag one or more image files (JPEG, PNG, or any other format) onto the drop zone on the page. Second, wait briefly while the conversion runs — typically 1-3 seconds per image. Third, click the download button to save the WebP file. That is it. No account needed, no file size limits beyond your browser's memory, and no images are uploaded to any server. Everything happens privately on your own device.

A common concern is whether WebP works everywhere. The short answer: yes, for nearly all practical purposes. As of 2026, WebP is supported by Chrome, Firefox, Safari, Edge, Opera, and virtually every modern mobile browser — covering over 97% of internet users worldwide. The only scenario where WebP might not display is in very old email clients or legacy enterprise software. For websites, blogs, and social media, WebP works universally.

If you are managing a blog or small business website, converting your entire image library to WebP is one of the highest-impact performance improvements you can make with minimal effort. A WordPress blog with 100 articles averaging 5 images each could reduce total image storage from 150 MB to under 100 MB. More importantly, each page loads measurably faster, which Google's algorithm rewards with better search placement — a genuine SEO benefit from a simple file format change.