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How to Mask Your Aadhaar Card PDF for KYC Security

Sharing your full Aadhaar number is a major privacy risk. Learn how to securely mask your Aadhaar 12-digit number using ShasLab's 100% private, browser-based tool.

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Why is Aadhaar Masking Important?

In India, the UIDAI recommends using a "Masked Aadhaar" for basic KYC purposes. A masked Aadhaar only displays the last 4 digits of your Aadhaar number, keeping the first 8 digits hidden. This prevents identity theft and misuse of your biometric data.

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Unlike other online converters, ShasLab doesn't upload your file to any server.

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Processing happens in your browser. You can even disconnect your internet after loading the page!

Steps to Mask Aadhaar Locally

  1. Download your e-Aadhaar from the official UIDAI website.
  2. Upload the PDF to the ShasLab PDF Redactor.
  3. Use your mouse to draw black boxes over the first 8 digits of your Aadhaar number.
  4. Click "Download" to save the secured, masked version.

Is it safe to use ShasLab?

Yes. We built ShasLab specifically because we were frustrated with tools that required users to upload sensitive documents to their servers. ShasLab is a client-side execution tool. This means the code runs on your CPU, not ours. We have zero access to your files.