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PDF Signer

Digital Signature Software for Secure PDF Signing

Sign, manage, verify and deliver PDF documents using Digital Signature Certificates. Use a connected browser-based workspace for your signing workflow.

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PDFSigner digital signature software showing DSC certificate signing and verification
USB DSC connected
Signature verified

Trusted byIndia'sBiggest Brands

ITD Cem
Nicotra Gebhardt
Oberoi Realty
Poddar Pigments
Sakthi Auto
Sound Castings
UltraTech Cement
AVBRH
Garuda Power
Honda Power Products

From Document Upload to Delivery in One Connected Workflow

www.pdfsigner.in/app/workspace
STEP 01Select documents
248 PDFs
Drop PDFs or a document batch hereIndividual files, multiple PDFs or complete batches
Salary_Slip_Employee_1028.pdf Uploaded Vendor_Invoice_September.pdf Uploaded
Explore more featuresShow fewer features

Don’t Let Password-Protected PDFs Slow Down Bulk Signing

Configure supported password-handling methods as part of the document batch instead of manually unlocking every PDF.

Common Password

Apply one password when multiple PDFs follow the same protection pattern.

Rule-Based Password

Use a defined rule when passwords are derived from known document or recipient information.

Excel or CSV Mapping

Map individual documents to their respective passwords using a structured spreadsheet.

PASSWORD SETTINGSChoose a handling method
248 files
Common Password validation complete

234 files matched · 14 files need attention

234Files matched14Need attention

Every PDF Has a Different Layout. Place the Signature Where It Belongs.

Configure the signature page, coordinates, dimensions and appearance according to the document layout. With PDF digital signature software, you can preview the placement before starting the signing process.

  • First page
  • Last page
  • Every page
  • Selected pages
  • Custom X and Y coordinates
  • Drag-and-drop placement
  • Signature width and height
  • Custom appearance
  • Company stamp or logo, where supported
Last page
KDK SOFTWAREDigitally signed
17 Sep 2026

Adjust the controls, then preview the signature position.

Use Supported Digital Signature Certificates within the Cloud Workflow

Configure the supported signing component, select an available certificate and complete certificate-based PDF signing through digital signature software that works directly in your browser workspace.

  • Certificate selection
  • Supported Class 3 DSC workflows
  • USB crypto-token integration
  • Certificate-expiry visibility
  • PIN entry through the supported signing environment
  • Signing success and failure status
Browser Workspace→Local Signing Component→USB Token or Certificate→Signed PDF
AVAILABLE CERTIFICATEKDK SOFTWARE PRIVATE LIMITED

Class 3 DSC · Token connected

Ready

Review the Digital Signature and Document-Integrity Information

Inspect available signer, certificate, timestamp and integrity details to help verify a digitally signed PDF, right inside your digital signature software for PDF.

Signer Information
Certificate Information
Timestamp Information
Document Integrity
Verification Status
SIGNATURE STATUSValid

The document has not been modified after signing.

Document modified after signing
No
Certificate status
Valid
Signing time
17 Sep 2026, 11:42 IST
Certificate issuer
Licensed Certifying Authority
Serial number
47A9-22D1-08CF
Validation summary
Signature and integrity checks completed

Your Documents, Batches and Signing Activity in One Place

Organise uploaded, processed, signed, verified and delivered PDFs through a connected document workspace built into your digital document signing software.

  • Document status filters
  • Batch-level tracking
  • Search by document name
  • Signing history
  • Download completed documents
  • Delivery status
  • Activity logs
  • Retry failed actions
DocumentBatchStatus
Salary_Slip_1028.pdfSeptember PayrollDelivered
Vendor_Invoice_September.pdfVendor InvoicesSigned
Form16_Employee_024.pdfTax DocumentsFailed

Try placing a signature on a sample PDF.

Explore signature placement and stamp settings on a sample document. No account needed for this preview.

Sign a document

Place your signature, choose where it goes and preview the result.

Sample_Document.pdf4 pages · demo document
100%
PDFSIGNER01 / 04
Sample document

This sample page shows how a signature can appear on a PDF. It is for demonstration only and is not a signed legal document.

Document overview

Review the document, select a demonstration profile and place the signature stamp where you want it to appear. Adjust the stamp details using the settings panel.

Drag the stamp to reposition it. Use the corner handle to resize.

DEMO PREVIEW · NOT A DIGITAL SIGNATURE
Page 1 of 4
Signing certificate Rahul Upadhyay

Demonstration profiles

Pages to sign Current page only
Stamp appearance Name · Signed label +2

Show on stamp

Arrow keys move the stamp. Shift + arrow keys resize it.

Output file Sample_Document_signed.png
Sample_Document_signed.png

Downloads a PNG of the current sample page, not a signed PDF.

Drag the stamp or adjust its appearance.

This preview stays in your browser. It does not use a DSC or create a certified digital signature.

Work Faster. Sign Smarter. Stay in Control.

PDFSigner helps you reduce manual effort, handle more documents and keep your digital signing workflow simple from start to finish.

Faster document turnaround

Sign documents digitally without printing, manually signing, scanning or waiting for physical delivery.

Handle high document volumes

Process large batches of PDFs without repetitive manual signing.

Keep documents verifiable

Use certificate-based digital signatures and verification capabilities to help establish signer identity and document integrity.

Keep your workflow digital

Move from signing to verification and delivery without returning to paper-based processes.

Choose how you work

Use the Web App for a connected document workflow.

Built for Every Industry. Designed for Every Document.

From financial records and contracts to government forms, invoices and employee documents, PDFSigner helps teams digitally sign the PDFs their work depends on.

eCommerce Portals

Sign invoices, vendor agreements and business documents without slowing down digital operations.

Banking & Finance

Securely sign financial records, agreements and reports that require trusted digital signatures.

Accounts & Taxation

Sign invoices, tax documents, financial reports and other accounting records digitally.

Government Departments

Digitally sign official documents, applications, forms and departmental records with confidence.

Logistics & Transport

Keep delivery, transport and operational documents moving with faster digital signing.

Health Care

Digitally sign reports, records and compliance documents while keeping document workflows organized.

Insurance Sector

Simplify the signing of policies, claims documents, agreements and customer records.

Education Institutes

Digitally sign certificates, admission documents, student records and institutional paperwork.

Foreign Trade

Sign import, export and trade documents digitally to keep business transactions moving.

Human Resources

Sign appointment letters, salary slips, employee records and onboarding documents with ease.

Internet & Telecom

Digitally sign service agreements, customer documents and operational records efficiently.

Law & Justice

Sign contracts, NDAs, agreements and other legal documents with verifiable digital signatures.

Automobile Industry

Digitally sign sales, vendor, service and operational documents across automotive workflows.

Sales

Sign proposals, contracts and customer documents faster to keep deals moving.

HR

Digitally sign appointment letters, salary slips, onboarding documents and employee records.

Legal

Manage digitally signed contracts, NDAs, agreements and legal documents with greater control.

Finance

Sign invoices, reports, financial records and approval documents without paper-based delays.

Operations

Keep everyday business documents, records and approvals moving through digital workflows.

Procurement

Sign purchase orders, vendor agreements and procurement documents efficiently.

Compliance

Sign and verify regulatory documents, reports and records that require trusted digital signatures.

IT & Technology

Digitally sign service agreements, business documents and technology-related records with ease.

Security, Compliance & Verifiable Digital Signatures

PDFSigner combines certificate-based digital signing, PKI technology, cryptographic security and verification capabilities to help businesses create and manage trusted digital documents.

DSC

PKI

Timestamp

Integrity

Verification

Digital Signature Certificates

Use Digital Signature Certificates issued by licensed Certifying Authorities in India, including supported X.509 certificate-based signing workflows.

PKI-Based Signing

PDFSigner uses Public Key Infrastructure principles to establish a verifiable association between the signer and the signed document through cryptographic technology.

Timestamping & Document Integrity

Use trusted timestamps and signature integrity mechanisms to help establish signing time and identify changes made after signing.

Audit Trails & Verification

Maintain signing activity and verify digital signatures, certificate details, signer information, document integrity and timestamp validity.

Advanced Cryptography

Support for SHA-256, SHA-384, SHA-512, RSA 2048 and PAdES / ETSI EN 319 142-1 where applicable.

Indian Legal & Compliance Framework

PDFSigner is designed for digital-signature workflows aligned with the Information Technology Act, 2000 and applicable Indian provisions relating to electronically signed records.

Digital signatures are recognized under the IT Act framework, while the admissibility and evidentiary treatment of electronic records are addressed through applicable Indian evidence laws.

  • IT Act, 2000 — Digital signatures and authentication of electronic records
  • Indian Evidence Law — Sections 65B & 85A, where applicable
  • Licensed Certifying Authorities — DSCs issued in India
  • PKI Standards — Certificate-based cryptographic technology

See Why Customers Choose PDFSigner

From bulk document signing to offline security and DSC support, see how businesses and professionals are using PDFSigner in their everyday document workflows.

★★★★★

Their Support centre is Simply Amazing They Solve Your Problems in a Minute. I have some technical Issue Their Representative Vishal Bansal Solve my issues within a very short time.

CA. Rajiv Bansal (Financial Advisor)
★★★★★

"I Had Great Experience From Miss Khushboo Agarwal For Issue Related To KDK Tds Excel Export. She Had A Very Good Knowledge And A Very Kind Tone. That's Excellent Issue Resolve In Just Few Minutes. 5 Star For Support."

Gopal Agarwalla
★★★★★

"Thank You So Much Really Fast Response From KDK Software Team Especially Vishal Sir Response Great Within Limited Time Period He Did Wonderful Task And Resolve My Problem Thank You Sir And Thank You KDK Software Team"

Vishal Bansal
★★★★★

"1 Cloud Base Is Good 2 Can Used From Anywhere 3 Single Click GSTR1/ 3B Downloads. 4 2B Reco. 5. Auto 2B Email To Clients And Email Feature To Some More Points Demo Given By Your Person With Good Explanation And Example Live"

Saloni Jain
★★★★★

"Awesome Support System. They Will Resolve Your Queries From All Perspectives. Some Of The Support Staff Are Very Cooperative. I Have Talked With Shyam. He Is Such A Nice And Kind Person. Thanks And All The Very Best"

Khileshwar Sahu
★★★★★

"Nice Software Using For Last More Than 10yrs Since I Was Doing Articleship. Its Presentation Style Is Very Good In Compare To All Other Softwares In Market I Highly Recommend The Same."

Dhaval Pandya
★★★★★

Excellent digital signing tool. The bulk signing feature has saved us hours every month when processing salary slips for our 500+ employees.

Priya Sharma
★★★★★

Very easy to use and legally compliant. Our legal team relies on PDF Signer for all NDA and contract signings. Highly recommended!

Rajesh Kumar
★★★★★

The offline functionality is a great security feature. We handle sensitive financial documents and knowing they never leave our network gives us peace of mind.

Anita Mehta
★★★★★

Switched from manual signing to PDF Signer and our document turnaround time dropped from 3 days to 3 minutes. Outstanding product!

Suresh Patel
★★★★★

The DSC token integration works flawlessly. We've processed thousands of documents without a single authentication failure.

Mohan Verma
★★★★★

Setup was quick and the support team was extremely helpful. Within 30 minutes we were signing documents digitally.

Deepa Krishnan
★★★★★

Long-Term Validation support means our archived documents remain valid years after signing. Critical for our audit trail requirements.

Amit Joshi
★★★★★

The custom signature appearance feature lets us brand our signed documents professionally. Our clients are always impressed.

Sunita Agarwal
★★★★★

Handles our bulk tender document signing with ease. Used to take our team half a day; now it's done in under an hour.

Vikram Singh
★★★★★

Finally a PDF signing tool that understands Indian compliance needs. Class 3 DSC support and PKI standards all in one package.

Rekha Sharma
★★★★★

We use PDF Signer for all our vendor agreements. The multi-signature capability has streamlined our approval workflows significantly.

Naveen Gupta
★★★★★

Paperless HR is now a reality for us. Appointment letters, offer letters, salary slips — all digitally signed and delivered instantly.

Pooja Reddy
★★★★★

SHA-256 encryption and RSA 2048-bit security meets our pharmaceutical regulatory requirements. Compliance team approved.

Sanjay Malhotra
★★★★★

The time-stamping feature is invaluable for our legal department. Non-repudiation is guaranteed on every signed document.

Asha Rao
★★★★★

Customer support is phenomenal. Any queries are resolved promptly and the team really understands the product inside-out.

Rajan Tiwari
★★★★★

As an educational institution we sign hundreds of certificates annually. Bulk signing has transformed our certificate issuance process.

Meena Iyer
★★★★★

Excellent value for money. The features offered at this price point are unmatched in the Indian digital signing market.

Sunil Desai
★★★★★

The interface is clean and intuitive. Even non-technical staff in our HR department can sign documents without any training.

Nisha Kapoor

Frequently Asked Questions

PDFSigner is digital signature software for signing, managing and verifying PDF documents using Digital Signature Certificates. It is available as a browser-based Web App.
Yes. PDFSigner supports digital signing workflows using supported Digital Signature Certificates, including Class 2 and Class 3 DSCs issued by licensed Certifying Authorities in India.
Yes. PDFSigner supports bulk PDF signing, allowing users to process multiple PDF documents in a single workflow.
Yes. PDFSigner provides digital signature verification capabilities to help check signature validity, certificate details, document integrity and timestamp information.
Yes. PDFSigner Web supports document delivery and tracking, including bulk recipient mapping and configurable email delivery.
Yes. Bulk PDF signing is a core PDFSigner capability for processing multiple PDF documents in a single workflow.
PDFSigner can be used by businesses and professionals across finance, accounts, taxation, HR, legal, government, banking, education, healthcare, logistics, insurance, eCommerce, automobile and other document-intensive industries.

Need the Desktop Version Instead?

Some organizations prefer a dedicated desktop application for offline signing, local folder processing, or environments with restricted internet access.

PDFSigner Desktop delivers the same trusted digital signing experience in a native Windows application while keeping documents on your local machine.

Download PDFSigner Desktop →

Ready to Simplify Your PDF Signing?

Sign documents faster, handle high-volume PDF workflows and keep every signed document easy to verify. Use PDFSigner through one connected web-based workspace.

Get Started →