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IDSign PDF Signer

Digitally sign one PDF or thousands at once with your Digital Signature Certificate. A Windows application that applies Adobe-compatible digital signatures using a valid DSC, recognised under the IT Act 2000.

  • Bulk & batch signing in every edition
  • Works with your USB token DSC
  • Signatures verifiable in Adobe Reader
A digitally signed document with a verified certificate seal

Digitally sign documents. Secure. Compliant. Effortless.

Sign, protect and share documents instantly. No paper, no delays.

Batch & bulk signing

Sign a single PDF, several files or an entire folder in one step, and save hours of manual work.

Flexible authentication

Works with DSC tokens, USB tokens and the Windows Certificate Store. PFX / P12 certificate files are supported in Pro and Advance.

Compliance assurance

Aligned with the IT Act 2000 and works with certificates from licensed Certifying Authorities. Adobe-compatible PAdES Part 2 signatures, with LTV validation in Advance.

Configurable signature look

Decide where and how your signature appears: placement, visibility, text, logo and format (Pro and Advance).

Timestamping & verification

RFC 3161 timestamping and OCSP / CRL revocation checks for tamper-evident, auditable signatures (Pro and Advance).

Robust security

PIN or password required to access your private key for every signing (USB token or PFX), X.509 certificate support and tamper-evident signed files.

Faster turnaroundCut delays in approvals and dispatch.
Recognised under the IT Act 2000Signatures created with a valid DSC can be used for legally valid electronic transactions, subject to applicable laws.
ScalableFor startups, SMEs and large enterprises.
Simple workflowStep-by-step signing with customisable output.

Choose your edition

IDSign PDF Signer is available in three editions, so you pick the right balance of capability and compliance for your workflow. You can upgrade at any time.

Basic

For individuals and small teams

Fast, reliable PDF signing with a regular Digital Signature Certificate. Includes batch signing and visible signatures.

Ask about Basic
Pro

For growing businesses

Adds configurable signature appearance, multi-page and multi-party signing, timestamping, password protection and company logo integration.

Ask about Pro
Advance Top tier

For enterprises

Complete compliance and security: LTV validation, certified documents, role-based access, SSO, audit trail, API access and advanced encryption support.

Ask about Advance

Compare editions

FeatureBasicProAdvance
Signing
PDF file signing, unlimitedYesYesYes
Bulk signer / batch file or folderYesYesYes
Visible signatureYesYesYes
Draw signatureYesYesYes
Signing with imageNoYesYes
Configurable signature appearanceNoYesYes
Multi-page signingNoYesYes
Multi-party signing (same file)NoYesYes
Company logo with signature blockNoYesYes
Invisible signatureNoNoYes
Certificates & compliance
Regular signature DSC (USB token)YesYesYes
DocuSigner DSCNoYesYes
PFX / P12 filesNoYesYes
PKCS#11 devices and HSMsNoNoYes
Timestamping (RFC 3161)NoYesYes
Licensing
PDF Signer APINoNoOptional

Windows application for all editions. Optional features are available on request.

Start signing in four steps

A normal Windows desktop application. Install it, activate your license and sign your first document in minutes.

  1. 1

    Install

    Run the installer (.msi). It creates a desktop shortcut and starts with Windows.

  2. 2

    Activate

    Enter the license key you received. The status line shows your edition and validity.

  3. 3

    Select your DSC

    Choose your USB token certificate from the Windows Certificate Store, or a PFX file in Pro and Advance.

  4. 4

    Sign

    Pick your files or folder, choose where the signed copies go and click Sign Documents.

Perfect for every industry

Any workflow that needs secure, compliant signatures.

Banking & financial services

Speed up account opening, loan agreements and insurance documentation with DSC-signed PDFs.

Government & public sector

Simplify tender submissions, GeM bids and statutory filings using DSC-based signatures.

Human resources

Digitally manage offer letters, NDAs, contracts and policy acknowledgements with bulk signing and dispatch.

Manufacturing & supply chain

Streamline vendor onboarding, purchase orders and GST invoicing with secure organisational signatures.

Healthcare & pharmaceuticals

Enable patient consent, prescription approvals and clinical documentation with compliant digital signatures.

Real estate & legal

Execute sale deeds, rental agreements, MoUs and power-of-attorney documents with secure digital signatures.

System requirements

  • Operating systemWindows 10 or Windows 11 (64-bit)
  • .NET Framework4.8 or later (already included on most Windows 10/11 PCs)
  • CertificateA valid Digital Signature Certificate: USB token, or a PFX file in Pro and Advance
  • Disk spaceUnder 200 MB
  • InternetOnly needed for license activation and for LTV / timestamp signing

Ready to go digital?

Experience faster turnaround, stronger compliance and complete peace of mind with IDSign PDF Signer. Tell us what you need and our team will get back to you.

Talk to our team

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