What is WEBP Converter?
WEBP Converter is a free, browser-based image optimisation tool that converts JPG and PNG images into the modern WebP format. It was designed from the ground up to be fast, private, and completely unlimited — no account needed, no file size caps, no subscriptions.
Unlike other online converters, WEBP Converter processes every image locally inside your browser. Your files are never uploaded to any server, which means your client work, proprietary assets, and personal photos stay 100% private at all times.
The tool automatically targets file sizes under 200KB — the sweet spot for fast-loading web pages — while preserving as much visual quality as possible. You can convert a single image or batch-process dozens at once and download them all as a ZIP archive.
Who is it for?
WEBP Converter is built for web designers, front-end developers, digital marketers, and anyone who publishes images on the web. If you care about page speed, Core Web Vitals, or Google PageSpeed Insights scores, this tool is for you.
It's particularly useful for freelancers and agencies who are preparing assets for client websites, e-commerce stores, blogs, and landing pages — situations where you need to move fast without compromising on quality or privacy.
Why WebP matters for your website
WebP is a modern image format developed by Google that provides superior compression compared to JPEG and PNG. By converting your images to WebP, you can reduce file sizes by 50–70% without any noticeable loss in visual quality. This directly translates to faster page load times, which is one of the most important factors in Google's search ranking algorithm.
Since 2020, all major browsers — including Chrome, Firefox, Safari, and Edge — support WebP, making it a safe and future-proof choice for production websites. Google's own PageSpeed Insights tool explicitly recommends serving images in next-gen formats like WebP to improve your Core Web Vitals scores, particularly the Largest Contentful Paint (LCP) metric.
WEBP Converter takes the guesswork out of this process by automatically targeting file sizes under 200KB while preserving as much visual quality as possible. Whether you're optimising a single hero image or batch-processing hundreds of product photos, the tool handles it all in your browser with zero uploads and zero privacy concerns.
Who builds it?
WEBP Converter is built and maintained by Chris at Pixelbricks Design, a web designer based in London. Chris built this tool out of personal frustration with converter tools that had file limits, required logins, or uploaded images to external servers.
The mascot is Pixel Pete — a cheerful pixel-crushing character from Pixel World who loves turning bulky images into fast, lightweight files. He's always ready to help, one WebP at a time.
Ready to try it?
Convert your images to WebP for free — no sign-up, no limits, no hassle.
Start converting →