Nanofy

Make your files smaller — photos and PDFs, compressed on your device.

Nanofy shrinks photos and PDF files to fit upload forms, email limits and messaging apps. Set an exact size in KB, or pick a preset. Everything runs locally: your files never leave your phone and are never uploaded for processing.

Photo compressor with exact KB targets
PDF compressor that keeps text selectable
Photo to PDF, PDF to photo
Convert between JPG, PNG, WEBP (Android) and HEIC (iOS), and resize
Merge and split PDFs
Works offline · no account required

Support

Something not working, or a question about the app? Email tilki0024@gmail.com and we will get back to you.

Common questions

Where do my compressed photos go?
Tap Save and they are written to your photo library. On Android they appear in the Pictures/Nanofy album.

Where do saved PDFs go?
On iPhone and iPad they appear in the Files app under On My iPhone → Nanofy. On Android they are saved to Downloads/Nanofy.

I asked for 100 KB but got 128 KB.
Some images cannot reach a target without becoming unusable. When that happens the app tells you the closest size it managed rather than claiming it hit the target. Try a smaller target or a lower quality preset.

My file did not get smaller.
If a file is already small or already well compressed, re-encoding it would make it bigger. In that case Nanofy returns the original untouched.

Is my data uploaded anywhere?
No. All processing happens on your device, and the app contains no ads and no analytics. See the Privacy Policy.