AltUtils

Image to WebP Converter

Convert JPEGs and PNGs to next-gen WebP format — supports batch conversion.

Privacy-First: Images never leave your device

Click or Drag Images Here

PNG, JPG, JPEG, GIF — multiple files supported

Your converted WebP images will appear here.

What is the Image to WebP Converter?

The Image to WebP Converter is an offline-capable tool that compresses heavy PNGs and JPEGs into Google's highly efficient WebP format, drastically reducing file size.

Optimizing images is the #1 way to accelerate page load times. Since page speed is a primary ranking factor for Google's Core Web Vitals, converting to WebP provides a massive SEO boost.

Frequently Asked Questions

What is the WebP image format?

WebP is a modern image format created by Google. It provides superior lossless and lossy compression for images on the web, often yielding files 25-35% smaller than JPEG or PNG equivalents.

Does WebP support transparency?

Yes! Unlike JPEG, WebP fully supports transparency (alpha channel) while typically remaining much smaller than an equivalent PNG.

Do all browsers support WebP?

Currently, over 95% of web browsers support WebP globally. For older browsers, you can provide a fallback using the HTML <picture> tag.

Does this resize my images?

You can optionally resize images by specifying a width. With 'Lock ratio' enabled, the height adjusts automatically to maintain proportions.

Is my image uploaded to a server?

Never. The conversion leverages your device's native HTML5 Canvas capabilities, meaning your private images stay on your machine securely.