Most online PDF compressors upload your Aadhaar to their servers and delete it later. In our 17 October 2026 test, iLovePDF, Smallpdf and PDF24 uploaded the file as soon as it was chosen, and Adobe and 11zon say they process files on their servers. The safest option is a compressor that works inside your browser, so the Aadhaar never leaves your phone or laptop.
What happens when you upload an Aadhaar
A server-based compressor receives a full copy of the document: your name, Aadhaar number, date of birth, address and photo. The companies say they delete files after a short time, and there is no reason to think they don't. But for that window the copy sits on infrastructure you don't control, and you have no way to check the deletion yourself.
What the popular tools do (tested 17 October 2026)
| Tool | Uploads the file? | What it says about deletion |
|---|---|---|
| iLovePDF | Yes | Within 2 hours, or immediately with "Delete it now" |
| Smallpdf | Yes | Not stated on the pages we checked |
| PDF24 (online) | Yes | Within 1 hour, servers in the EU |
| 11zon | Yes (its privacy policy) | Within 2 hours |
| Adobe Acrobat online | Yes (its page) | Deleted unless you sign in to save it |
| Pi7 | No upload seen | No privacy policy on file handling found |
| CompressKaro | No: compressed in your browser | Nothing to delete |
Details and sources for each tool: PDF compressors compared.
Safer ways to share an Aadhaar
- Use the masked Aadhaar where it is accepted. UIDAI lets you download an e-Aadhaar that hides the first eight digits of the number. Many KYC uses accept it; check what your portal asks for.
- Compress on your device. The Aadhaar compressor works in the browser, opens the password-protected e-Aadhaar with your password on your device, and compresses to the portal's limit.
- Check any site yourself. Open the browser's Network tab before choosing a file: how to tell if a website uploads your file.
- Delete copies you no longer need, especially unlocked ones in your Downloads folder.