Convert to WebP or AVIF
Pick WebP or AVIF under More settings, then drop your images.
Saving needs the page opened in claude.ai. You can still compress and compare here.
Files
No files yet.
Private
Files are processed on your device and never uploaded.
Free
No sign-up, no watermark, no file limits.
Checked
Every result is compared with the original before you save it.
Faster websites with next-generation image formats
WebP and AVIF are supported by all modern browsers and deliver the same visual quality as JPG and PNG at a fraction of the size, which improves page speed and Core Web Vitals.
Set "Image output" to WebP or AVIF in the settings panel, or choose "Smallest of all formats" to let each image pick its winner.
- Drop your images above.
- Set Image output to WebP or AVIF.
- Save the converted files.
FAQ
Is WebP or AVIF better?
AVIF is usually smaller; WebP encodes faster and is supported slightly more widely. Use "Smallest of all formats" to compare automatically.
Are my files uploaded?
No. Compression runs in your browser, so your files never leave your device. Aivdo only counts anonymous usage (country, file type and sizes). File names and contents are never sent.
Which compression level should I pick?
Recommended keeps files looking the same and suits almost everything. Extreme and Maximum make files much smaller but lower the quality, which is handy for email limits. Maximum tries several settings on PDFs and keeps the smallest valid file.
Which browsers work?
Images and PDFs work in every modern browser. Video needs Chrome, Edge or Safari 17 or newer.
Is there a size limit?
No fixed limit. Very large videos (over about 1–2 GB) can run out of browser memory, so split those first.
What if a file can't get smaller?
Aivdo keeps the original and tells you. You never get back a bigger file.