myriadfile

JPG to WebP converter

Make website images smaller by converting JPG and PNG to WebP. Set a quality or a target size in KB and convert whole folders in your browser.

Runs on your device. Nothing is uploaded.
RunsIn your browser
UploadsNone
CollectionImage tools
Drop JPG or PNG images hereor choose files. Batch conversion for whole folders.or paste with Ctrl V / ⌘ V

Good to know
  • AVIF output appears only in browsers that can encode AVIF. WebP output is unavailable in a few older Safari versions.
  • Converted files contain no EXIF metadata, so location and camera details are removed. Rotation is applied to the pixels.
  • GIF input uses the first frame only. Multi-image HEIC files (bursts) use the first image.
  • Very large batches are converted one file at a time to keep memory use low.

Why use WebP on a website

Image weight is often the biggest part of a web page. WebP usually produces smaller files than JPG at similar visual quality, and smaller than PNG for graphics with transparency, which means faster loading and better Core Web Vitals. All current major browsers display WebP.

This tool is meant for site owners, bloggers and store managers who want to convert a batch of images before uploading them to a CMS or theme.

How to convert JPG to WebP

  1. Add images. Drop JPG or PNG files. Add a whole folder by selecting all its files.
  2. Set quality or a size target. Quality 75–85% is a common choice for web photos. Or set a maximum size in KB, for example 150 KB for hero images.
  3. Set a maximum width. Most content areas are 800–1600 px wide. Resizing to the display size saves far more than format changes alone.
  4. Download as ZIP. Upload the WebP files to your site. Check each file’s savings badge to see the reduction.

Settings explained

Quality
WebP quality numbers are not the same scale as JPG. Compare the before and after view instead of matching numbers.
Max size per image (KB)
Searches for the highest quality under the limit, then reduces dimensions only if needed.
Max width and height
Never upscales. Resizing first is the biggest single saving for oversized photos.

Keep a fallback?

Every major browser now displays WebP, so most sites serve WebP directly. If you need to support very old browsers or email clients, keep the JPG and use the <picture> element to offer both.

If WebP is missing from the menu

The converter uses your browser’s built-in WebP encoder. Chrome, Edge and Firefox have one. If WebP is not offered, use one of those browsers.

Troubleshooting

The WebP is larger than the JPG
This happens when the JPG was already heavily compressed. Lower the quality a little, or keep the JPG for that image.
Text in screenshots looks fuzzy
Use a higher quality (90%+) for screenshots, or keep them as PNG.

Frequently asked questions

Do all browsers support WebP?

All current versions of Chrome, Edge, Firefox and Safari display WebP.

Will converting hurt SEO?

No. Smaller images load faster, which helps page experience. Keep descriptive file names and alt text.

Does WebP support transparency?

Yes. Transparent PNGs keep their transparency when converted to WebP.

Are my images uploaded?

No. Encoding happens in your browser.

What quality should I use?

Start at 80% and compare. Many photos look identical at 75%.

Sources