imgresizer.org

Convert to WebP

Convert any image to WebP - 25-34% smaller than JPG at the same quality. Transparency supported.

Your image is processed locally. Nothing is uploaded.

How to use Convert to WebP

  1. 1

    Upload your image

    Drop a JPG, PNG or GIF image onto the tool or click to select.

  2. 2

    Set quality

    WebP quality works like JPEG quality: 85% looks identical to the original while being 25-34% smaller.

  3. 3

    Convert

    Click Convert to WebP. The output is encoded for the best possible compression.

  4. 4

    Download

    Download the .webp file. WebP is supported by all modern browsers and most image editing applications.

Why WebP is the best format for web images

WebP was designed by Google specifically for the web. It combines the strengths of JPG and PNG in one format: lossy compression for photographs, lossless compression for graphics, and full alpha channel transparency support. At equivalent visual quality, WebP files are 25-34% smaller than JPG and 26% smaller than lossless PNG. For a page with ten images, switching to WebP can reduce total image payload by a third without changing how anything looks.

Google PageSpeed Insights and Lighthouse both flag JPG and PNG images as inefficient and recommend serving images in next-gen formats. WebP is the recommended next-gen format for the broadest browser compatibility. You can also compress an existing WebP further if the file is still larger than your upload limit allows.

Browser and platform support

WebP is supported by Chrome, Firefox, Safari (version 14 and later), Edge, Opera, and Samsung Internet - covering more than 97% of global browser usage. For the small fraction of users on older browsers, you can serve a JPG fallback using the HTML picture element. For images in emails, stick to JPG or PNG since most email clients do not support WebP yet.

Serving WebP on your website

The easiest approach is to use the picture element with a WebP source and a JPG fallback. Modern CDNs like Cloudflare and image services like Imgix can also serve WebP automatically based on the browser's Accept header, so you only store one master file. If you are using WordPress, plugins like ShortPixel or Imagify handle the conversion and serving automatically. Converting your images here gives you WebP files you can upload directly alongside existing JPGs or replace them outright if your platform supports WebP natively. For a full breakdown of when to use WebP vs. JPG vs. PNG, the format comparison guide covers the tradeoffs in depth.

Frequently Asked Questions

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