What this tool does
It re-encodes JPG and PNG images as WebP using your browser's built-in encoder, at the quality you set. Transparent areas in PNGs stay transparent. Dimensions are unchanged unless the image exceeds your browser's size limit, in which case it's scaled down and the result tells you.
The tool checks that your browser really produced a WebP file. When native WebP encoding is unavailable, a local encoder runs in a background worker. If encoding fails, you get a clear message instead of a mislabelled file.
When it's useful
- Speeding up a website: WebP images often load faster than the equivalent JPG or PNG.
- Replacing large transparent PNGs (logos, cut-out product shots) with much smaller files.
- Site builders and CMSs that recommend WebP uploads.
How to use it
- Choose or drop JPG and PNG files (up to 50).
- Set the quality. 75–85 suits most images.
- Press Convert to WebP. Compare the sizes, then download.
Compatibility
All current major browsers display WebP. Some older desktop software, email clients and print services still don't accept it, so keep a JPG or PNG copy if you're not sure where the image will end up.
Limitations
- Output is lossy WebP. At quality 100 it is very close to the original but not bit-for-bit lossless.
- Browsers without native WebP encoding use our local fallback (up to 8 megapixels per image). It needs WebAssembly and workers. For larger images, resize first or choose JPG or PNG. Nothing is uploaded.
- Metadata is removed. Up to 50 files, 50 MB each.