Aadhaar masker

Aadhaar uses Verhoeff checksum validation; this tool applies the same algorithm locally.

Mask Aadhaar numbers in screenshots and documents to reduce personal data exposure.

1. Paste a 12-digit Aadhaar number (spaces and dashes are ignored).
2. The tool checks the Verhoeff checksum and flags structurally invalid numbers.
3. Copy the masked form — first eight digits hidden, last four kept — for tickets, documents or logs.

Use the masked output anywhere you would otherwise paste a raw number, such as support threads or screenshots.

A valid checksum only proves the number is well-formed — it does not confirm the number was actually issued to a real person. Never treat a passing checksum as identity verification. Masking reduces exposure but a masked number plus other fields can still be sensitive, so store and share the minimum needed.

Everything runs in your browser; no Aadhaar number is uploaded, logged, or sent to any server.

Use this tool for quick browser-based work when you need an answer or output immediately. Use a dedicated application or automated workflow when you need bulk processing, approvals, or repeatable production rules.