eSign online in India with Aadhaar OTP
Upload a PDF, add the signers, and each one signs with an OTP on their Aadhaar-linked mobile. A legally recognised signature, not just a drawn image. ₹15 per signature.
1 credit (₹15) per signer, used when you send. Signers pay nothing.
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How to eSign online in India
Use Aadhaar eSign. Upload the PDF to an eSign service such as SignYu, add each signer's name, phone and email, and send. Each signer opens the link, enters their Aadhaar number on the Certifying Authority's page and types the OTP sent to their Aadhaar-linked mobile. The signed PDF carries a digital signature in the signer's name that Adobe Reader can check. It takes about 2 minutes per signer and costs ₹15 per signature on SignYu, with no USB token or DSC.
How it works
About 2 minutes per signer.
Upload the PDF
Upload any PDF up to 10 MB. Sign in with Google or your email if you have not already.
Add the signers
Add up to 6 signers with name, phone and email. Add yourself if you are signing too. They sign one after another, in the order you set.
Send
Each signer gets a signing link by email. One credit is used per signer when you send.
Signers verify with Aadhaar OTP
On the eSign page of eMudhra, a licensed Certifying Authority, each signer enters their Aadhaar number or VID and the OTP sent to their Aadhaar-linked mobile.
Download the signed PDF
When everyone has signed, download the signed PDF and the completion certificate. Signers who gave an email get the signed PDF too.
See every screen in our step-by-step guide with screenshots.
Who can sign
Anyone with Aadhaar
Who can receive the OTP on the mobile number linked to their Aadhaar.
On any device
Any phone or computer with a browser. No app, no account and no USB token.
Not without Aadhaar
Foreign parties, or anyone whose Aadhaar has no linked mobile number, cannot sign this way.
Aadhaar eSign vs a drawn signature vs a DSC
Most "sign PDF online" tools place a drawn or typed signature on the page. That is fine for informal documents, but it does not show who signed. Aadhaar eSign and DSC both create a digital signature tied to a verified person.
| Aadhaar eSignwith SignYu | Drawn or typed signature | DSC on a USB token | |
|---|---|---|---|
| Recognised method under the IT Act | Yes, Section 3A and the Second Schedule | No. It is an image on the page | Yes |
| Proves who signed | OTP from UIDAI to the signer's Aadhaar-linked mobile | No. Anyone can draw or type a name | Identity checked when the certificate is issued |
| Checkable in Adobe Reader | Yes, shows the signer's name and certificate | No digital signature to check | Yes |
| What the signer needs | Aadhaar and the linked mobile | Nothing | Their own DSC, USB token and software |
| Cost | ₹15 per signature, paid by the sender | Free | A paid certificate for each signer, renewed every 1 to 3 years |
What it costs
- Smaller packs from 2 credits for ₹86.
- One credit per signer, used when you send. A document with 3 signers uses 3 credits.
- No subscription. Credits never expire.
- Signers pay nothing and need no account.
- See pricing or add eSign to your app with the API.
Documents people eSign online
Cannot be eSigned: wills, powers of attorney, trust deeds, negotiable instruments other than cheques, and contracts for the sale or transfer of property. These are excluded by the First Schedule of the IT Act and still need a wet signature. More on eligible documents.
Frequently asked questions
Can I eSign a document online for free?
Free PDF tools let you draw or type your signature, but that is only an image of a signature. A legally recognised Aadhaar eSign goes through a licensed Certifying Authority and is paid per signature. On SignYu the sender pays ₹15 per signature. Signers pay nothing.
Is an online eSign legally valid in India?
Yes. Aadhaar eSign is one of the electronic signature methods recognised under Section 3A and the Second Schedule of the Information Technology Act, 2000. A few documents cannot be signed electronically at all, such as wills, powers of attorney and property sale deeds.
Who can sign with Aadhaar eSign?
Anyone with an Aadhaar number who can receive the OTP on the mobile number linked to it. A person without Aadhaar, such as a foreign party, cannot sign this way.
Can I sign my own document?
Yes. Add yourself as the signer. You can also add other people, up to six signers in total.
Do signers need to install an app or create an account?
No. They open the link from their email in any browser, on a phone or a computer.
How much does it cost?
₹15 per signature, GST included, when you buy 10 or more credits. You can buy as few as 2 credits for ₹86. There is no subscription and credits never expire.
How long does it take?
About 2 minutes per signer once you send the document.
How do I check that a PDF was signed with Aadhaar?
Open it in Adobe Acrobat Reader and look at the signature panel, or upload it to SignYu's free signature verification tool.
Already have a signed PDF? Verify the signature for free.
eSign your PDF now
About 2 minutes per signer. ₹15 per signature, no subscription.
1 credit (₹15) per signer, used when you send.
By proceeding, you agree to our Terms of Service and Privacy Policy.
By Rahul Mehta, Product & Integration Lead. Updated 6 November 2026.