Are my files uploaded to the internet?

No. Everything happens in your browser: you can check it by disconnecting from the internet after the page has loaded.

What if a photo is already under 150 KB?

It is copied as it is. FeatherFiles never re-compresses something that is already optimized, and never makes a file bigger.

Guides

How to reduce the size of WhatsApp photos without losing quality

Free up space on your phone or computer by bringing WhatsApp photos down from ~200 KB to ~150 KB, without uploading them anywhere and keeping their dates.

1Copy the «WhatsApp Images» folder from your phone to your computer.
2Open FeatherFiles and drop the folder in: WhatsApp photos are detected automatically by their name (IMG-YYYYMMDD-WA…).
3Click «Optimize now» and save the .zip. When you unzip it, every photo keeps its original date.

Try it now for free →

Frequently asked questions

Are my files uploaded to the internet?: No. Everything happens in your browser: you can check it by disconnecting from the internet after the page has loaded.
What if a photo is already under 150 KB?: It is copied as it is. FeatherFiles never re-compresses something that is already optimized, and never makes a file bigger.