Digital Signature Software: Sign Documents Online, Legally & Securely
TRUESigner ONE is digital signature software for Indian businesses. Get a digital signature online with Aadhaar eSign and DSC support, bulk sending, API integration and a complete audit trail — from any device, anytime.
Book a Free DemoDigital Signature Online with TRUESigner ONE
TRUESigner ONE is digital signature software that lets you sign contracts, forms and agreements online in minutes. It works on any device, from anywhere, so you can add a digital signature to a PDF without printing, scanning or couriering paper.
Whether you manage a handful of contracts or thousands of documents, you can create, send, sign and track everything from one dashboard. Choose the right online digital signature method for each document: email OTP e-signature, Aadhaar eSign or Class 2/3 DSC.
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Trusted by leading Indian and global enterprises
Send Documents for Digital Signature Online
Sign with a click instead of a pen. With TRUESigner ONE, you upload a document, add signers, and send it for online digital signature. There is no chasing people, arranging meetings or waiting for courier delivery.
Built for legal and secure approvals, our digital signature tool authenticates every signer, time-stamps every action and seals the final PDF so any later change is detectable.
What Is a Digital Signature, and How Does Digital Signature Software Work?
A digital signature is a secure way to show that a person agrees to a document and that the document has not changed since. Digital signature software such as TRUESigner ONE replaces print-sign-scan with a trackable online workflow. Every signer is authenticated, every action is time-stamped, and the final document is tamper-evident.
How to sign a document with a digital signature online
- Upload your contract, agreement or PDF.
- Add signers and place signature fields.
- Send the request by email, or in bulk.
- Signers verify identity (OTP, Aadhaar eSign or DSC) and sign on any device.
- Download the signed PDF with its audit trail.
Key features of our digital signature software
- Aadhaar eSign and Class 2/3 DSC support
- Bulk sending to hundreds of signers
- MFA and OTP signer verification
- Tamper-evident documents and audit trail
- Real-time status tracking and reminders
- REST API for ERP, CRM and HR systems
Digital signature vs electronic signature: types used in India
| Signature type | How the signer is verified | Typically used for |
|---|---|---|
| Electronic signature (email/OTP) | Email link and OTP verification with an audit trail | NDAs, vendor agreements, internal approvals |
| Aadhaar eSign | Aadhaar-based consent and OTP through an eSign service provider | HR onboarding, loans, customer agreements |
| Digital Signature Certificate (DSC) | Certificate issued by a licensed Certifying Authority (Class 2/3) | Regulatory filings, tenders, high-assurance contracts |
Electronic and digital signatures are recognised under India's Information Technology Act, 2000. Requirements differ by document type, so confirm specific cases with your legal team. Talk to us about the right digital signature option for your workflow.
Benefits of Digital Signature Software for Business
Forget locating individuals, arranging meetings and courier delays. TRUESigner ONE streamlines the entire signing lifecycle so your team can focus on the work that matters.
Trusted
Digital and electronic signatures are legally recognised in India and many other countries. TRUESigner ONE gives you a dependable digital signature solution backed by audit trails.
Cost-effective
Cut printing, courier and storage costs while streamlining business workflows. With TRUESigner ONE, you reduce paper use and save money on every agreement.
Save Time
The complete signing process happens online, so many agreements are signed in minutes instead of the days or weeks that paper-based methods can take.
Authentic
Private keys are stored securely while public keys are shared with recipients, ensuring signer authenticity and document integrity. TRUESigner ONE adds secure hardware security module (HSM) storage.
Digital Signature Solution for Every Business Workflow
Digital signatures help businesses scale faster by automating documentation, reducing paperwork, speeding approvals, and enabling secure digital workflows.
Vendor Agreements
Businesses depend on many suppliers, and procurement can be slow. Digital signatures on vendor agreements streamline operations, reduce administrative effort and improve efficiency.
Book a demo →Employee Onboarding
Onboarding involves sensitive documents such as offer letters, employment terms and compensation details. Digital signatures let HR complete, manage and store them securely, including in bulk.
Book a demo →Financial Transactions
Complete loan applications, investment agreements, credit forms and mortgage documents quickly and securely with Aadhaar eSign or DSC. Banks and NBFCs can scale loan operations efficiently.
Book a demo →Non-Disclosure Agreements
Signing NDAs online is faster and more secure. Signer authentication confirms who signed, and the audit trail records when and how.
Book a demo →Digital Signature Security & Compliance
TRUESigner ONE is built on global security frameworks and Indian regulatory standards — so your signatures hold up in audits and at scale.
ISO 27001 Certified
SOC 2 Type II
eIDAS Aligned
VAPT
IT Act 2000
GDPR Ready
What Customers Say About Our Digital Signature Software
Real teams closing deals faster with TRUESigner ONE digital and electronic signatures.
Digital Signature Online FAQs: Legality in India, Security, Pricing & Bulk Sending
Digital signature software lets you send, sign and store documents online instead of printing and signing on paper. TRUESigner ONE adds identity verification, tamper-evident documents, audit trails, bulk sending and API integration so signed agreements stay secure and verifiable.
Upload your document to TRUESigner ONE, add signers and signature fields, and send the request. Each signer verifies their identity (email OTP, Aadhaar eSign or DSC) and signs from any device. You then download the signed PDF with its audit trail.
Yes. Electronic and digital signatures are legally recognised in India under the Information Technology Act, 2000, including Aadhaar eSign and Digital Signature Certificates (DSCs), when they meet the prescribed requirements. Certain document types are excluded by law, so confirm specific cases with your legal team.
An electronic signature is any electronic way of showing consent to a document. A digital signature is a specific type that uses certificate-based cryptography (such as a DSC) to bind the signer's identity to the document and detect any later change. TRUESigner ONE supports both.
Aadhaar eSign, Class 2/3 Digital Signature Certificates (DSC), and electronic signatures under the IT Act, 2000 are all legally recognized in India, and TRUESigner ONE supports each of these signing methods.
All documents are encrypted in transit and at rest, access is protected with MFA and OTP verification, and every action is captured in a tamper-evident audit trail.
Yes, REST API access is available on the Premium and Enterprise plans, letting you trigger signing workflows and pull document status directly from your own systems.
Yes. Upload your document, import your recipient list, and TRUESigner ONE sends personalized signing requests to each signer. Track status in real time, send reminders and get notified when documents are signed. Bulk sending suits HR onboarding, employee agreements, customer consent forms, vendor contracts and policy acknowledgements.
Pricing depends on your document volume, the signing methods you need (email OTP, Aadhaar eSign, DSC) and whether you need API access. Book a free demo and our team will share a quote for your use case.