The following procedure is followed to download your aadhar card online:-
1. Visit the UIDAI website uidai.gov.in
2. Click the download aadhar option.
3. Select the aadhar option under the 'I Have' section.
4. Enter your 12 digit aadhaar number.
5. Enter captcha verification code and click on the 'Send OTP option' to get the one time password on your mobile number.
6. Enter the OTP received.
7. Now click verify and download the e aadhar card.