Image to WebP Converter

Convert JPG, PNG and other images to WebP in bulk

Drop in a batch of JPG, PNG, GIF, BMP or other images and convert them all to WebP, the modern image format supported by every current major browser. Each file shows its original and converted size so you can see the difference, and you can download images one by one or all together as a ZIP. Conversion uses your browser's built-in WebP encoder at its highest quality setting, so your images are never uploaded.

What can you do?

1. 1. Batch conversion
   Select or drag in many images at once and convert the whole set in one go, instead of handling files one at a time.
2. 2. Highest-quality encoding
   Images are encoded at the maximum quality setting. In Chrome and Edge this produces lossless WebP, so the conversion itself adds no visible quality loss.
3. 3. Size comparison for every file
   See the original size, the WebP size and the total for the batch, so you know immediately which images benefit from conversion.
4. 4. Download individually or as a ZIP
   Save single files with a .webp extension and the original file name, or download every converted image in one webp-images.zip archive.
5. 5. Transparency kept
   WebP supports transparency, so PNG logos and icons with transparent backgrounds keep them after conversion.

Why convert images to WebP?

WebP was designed for the web. Lossless WebP files are typically noticeably smaller than equivalent PNGs, and WebP supports transparency, which JPG does not, so a single format can replace both PNG and JPG in many places on a website.

Lighter images make pages load faster, especially on mobile data, and page speed feeds into Core Web Vitals metrics such as Largest Contentful Paint. Converting a site's images to WebP is one of the simplest performance wins available.

How to convert images to WebP

1. 1. Add your images
   Drag and drop files into the upload area or click to select several at once.
2. 2. Wait for the batch to finish
   Each image is converted in your browser and appears with its before and after file size.
3. 3. Compare the sizes
   Check the savings for each image. Keep the WebP version where it's smaller, and keep the original where it isn't.
4. 4. Download
   Download individual files or grab the whole batch as a ZIP.

WebP vs JPG vs PNG

When WebP won't make a file smaller

This converter favours quality over the smallest possible size. Lossless encoding is ideal for PNG screenshots, logos, illustrations and graphics, which usually get much smaller. Photographs that were already saved as compressed JPGs are a different story: a lossless copy has to preserve every pixel, including JPG compression artefacts, so the WebP file can end up the same size or even larger than the original.

That's why the size comparison matters. For photos where the WebP is larger, keep the JPG, or first reduce the dimensions with the image resizer, which has a far bigger effect on file size than the format alone. Files that are already WebP are passed through unchanged.

Using WebP images on your website

All current versions of Chrome, Edge, Firefox and Safari display WebP, so a plain <img> tag works. If you still need to support very old browsers, use <picture> with a fallback:

<picture>
  <source srcset="/images/hero.webp" type="image/webp">
  <img src="/images/hero.jpg" alt="Fresh filter coffee at our Chennai café" width="1200" height="630">
</picture>

Always include width and height attributes so the browser can reserve space and avoid layout shift while the image loads. In Next.js, the Image component can also serve WebP automatically.

Frequently asked questions

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