WebP converter

Convert JPG/PNG images to the smaller WebP format.

Choose image (JPG/PNG) Quality: 80%

Choose an image to convert to WebP.

Processed in your browser. Some old browsers may not support WebP export.

Run a page speed test on a site with a few photos on it and you will almost certainly be told to "serve images in next-gen formats". In practice that usually means WebP.

This tool re-saves the JPG or PNG files you already have as WebP at the same resolution, and shows you how much smaller the result is. Nothing is uploaded - the conversion happens in your browser.

How it works

Why WebP

WebP is an image format Google developed for the web. At comparable visual quality it generally produces smaller files than JPG for photographs and than PNG for graphics with transparency. Fewer bytes to download means faster page loads, which also feeds into the performance signals search engines measure.

Step by step

Pick a file under Choose image (JPG/PNG) - conversion starts right away.
Move the Quality slider (10-100%, default 80%) to re-convert at that setting.
The result line shows something like Original 1.2MB → WebP 340KB, plus the percentage saved and the pixel dimensions.
Press Download WebP to save the file as originalname.webp.

Picking a quality setting

For photographs, 75-85% is a comfortable range and still comes out noticeably smaller than a JPG of similar appearance. For images where text or thin lines have to stay crisp - screenshots, diagrams, charts - go to 90% or above.

Things to check

Conversion cannot improve on the source. Feeding in an already-compressed JPG applies a second round of lossy compression.
Very old browsers cannot export WebP at all; when that happens the tool says so rather than producing a file.
Some publishing platforms leave .webp out of their allowed upload extensions, so confirm before you commit to the format.
EXIF metadata, including capture time and GPS, is dropped during conversion.

Terms explained

WebP: A web image format created by Google. It supports lossy and lossless compression as well as transparency, and is typically smaller than JPG or PNG at similar quality.
Quality: A 10-100 setting controlling how much original colour detail is retained. Lower values mean smaller files and more visible degradation.
Saved: How much smaller the converted file is compared with the original, shown as a percentage.
Next-gen image format: An umbrella term for formats such as WebP and AVIF that compress more efficiently than JPG and PNG. Page speed audits use the phrase often.
Lossless vs lossy: Lossless keeps all original information; lossy discards some to save space. This tool exports using lossy compression.
Alpha channel: The transparency information stored alongside colour. WebP preserves it; JPEG does not.

Frequently asked questions

Will WebP display in every browser?

All current mainstream browsers - Chrome, Edge, Firefox and Safari - display WebP images. Very old browsers and some in-app webviews may not, so for a critical image it is worth keeping a JPG fallback alongside it.

Does PNG transparency survive the conversion?

Yes. WebP supports an alpha channel, so transparent backgrounds are preserved. Converting the same file to JPEG would fill the transparency in, which is why logos and icons are better kept as WebP or PNG.

I converted a file and barely saved anything. Why?

The source was most likely an already heavily compressed JPG, leaving little redundancy to remove. Try a slightly lower quality setting, or - if the image is much larger than the size it is displayed at - resize it first, which usually helps far more.

Can I convert a WebP file back to JPG?

Yes, with an image conversion tool that exports JPEG or PNG. Be aware that it is another pass of lossy compression, so the original quality will not come back. Keep the source file.

Is the image uploaded anywhere?

No. Reading, converting and downloading the file all happen within your browser, and the image is never transmitted to a server.