signer.digitalBrowser Extension
PDF Signing Extension for Chrome, Edge and Firefox Browsers
Signer.Digital provides an advanced PDF Signing Extension that allows users to digitally sign PDF documents directly from modern browsers. Our solution supports Chrome PDF Signing, enabling businesses and individuals to securely sign documents using Digital Signature Certificates, Smart Cards, and USB Tokens without requiring Java applets or complex browser configurations.
The extension also supports PDF Signature Validation in Chrome, allowing users to verify signed PDF documents and ensure document authenticity and integrity. Compatible with Windows, Linux, and Mac, Signer.Digital delivers a secure and seamless browser-based digital signing experience for enterprises, government organizations, and business applications.
signer.digital Browser Extension (Supports all Browsers on all OS.)
Gone are the days when users needs to check browser settings or check Java versions for using PKI Smartcard or USB Tokens. Modern browsers no more support ActiveX or Java applets. Why to limit your clients to a specific OS or browser?
Introducing the revolutionary, pathbreaking browser extension for PKI Industry. 1st time in History of PKI, an extension allows user and application owners/integrators to perform all the operations like Signing, Encryption, Enrollment & Downloading of Digital Signature Certificate, PDF signature Validation in Chrome and other browsers, Verification, Authentication directly through modern browsers like Chrome, Firefox, Edge and that too without being limitation of Operating Systems as signer.digital Browser Extension supports Windows, MAC and Linux.
Browser Extension for Secure Digital Signing
Signer.Digital Browser Extension allows organizations to perform digital signing operations directly through web browsers while maintaining enterprise-grade security and compliance.
Key Features
- Sign PDF documents directly from browser
- Support for Google Chrome, Edge, and Firefox
- No Java Runtime (JRE) required
- No ActiveX dependency
- Support for Windows, Linux, and Mac
- USB Token and Smartcard support
- Cross-platform compatibility
Supports
Windows
Linux
MAC
Chrome PDF Signing with USB Token Support
The extension enables secure Chrome PDF Signing using Digital Signature Certificates stored in USB Tokens, Smartcards, HSMs, and local certificate stores without exposing private keys outside the cryptographic device.
Supported Signing Sources
- USB Tokens
- Smartcards
- Windows Certificate Store
- HSM Devices
- Cloud HSM Solutions
Unique Features
Signer.Digital Extension does not require Special Browser Settings or Configuration.
No need of separate application to create / download digital certificate after enrollment.
Native on all OS. Does not require Java runtime (JRE) to be installed on user’s system.
USB Token or Smartcard independent and Supports all tokens for which Windows CSP is available.
Signer.Digital Browser extension Host for Linux is Native and does not require any framework as prerequisite.
PDF Signature Validation Chrome
Verify digitally signed PDF documents directly from Chrome and other supported browsers. The browser extension validates digital signatures, verifies certificates, and ensures document integrity and authenticity.
Validation Features
- PDF signature verification
- Certificate validation
- Document integrity check
- Signature authenticity verification
- Trust chain validation
Supported PKI Operations
- PDF Digital Signing
- XML and JSON Signing
- Encryption and Decryption
- Certificate Enrollment
- Digital Certificate Download
- PKI Authentication
- Signature Verification
Supports PKI Functions directly through Browser
Select User’s Certificate by presenting Certificate Selection dialog or silently by thumbprint; with full Allowed Origins control with user.
Sign PDF with multiple signatures, Sign eReturns, Content viz. XML & Json with various Sign Types and Algorithms with Certificate inclusion options.
Browser end Encryption and Decryption using private key stored in Smartcard or USB Token, which never comes out of Crypto device.
Seamless registration of user’s public key from browser and further Web User Authentication with token signed with private key from user’s smartcard with PKI verification on server.
Cross platform Certificate Signing Request (CSR) generation on Certificate Store, Smartcard or USB Token with OS Information and Smartcard Information enforcing smartcard password policy.
Download User’s Certificate and Trust Certificate Chain to Certificate Store, Smartcard or USB Token. May be wired up with CSR Generation and Certificate Creation on Certifying Authority Server.
How it Works
Technical Specifications
- Private key never comes out of USB Token or Smartcard but Hash to be signed is sent to Crypto Device and we get back Signature.
- Windows Browser Native Messaging host uses Windows CSP installed by Token Driver.
- Linux Browser Native Messaging uses .SO library for PKCS#11 interface.
- Auto Smartcard or USB Token detection through connected PCSC Readers listing.
- No additional framework requirement. Runs native on Windows, Linux and Mac.
- We are open to build any specific API widely used in any specific standard or region or markets.
Java Script API Documentation for Supported PKI Functions
Sign PDF with USB Token
Signer.Digital allows businesses and professionals to securely Sign PDF with USB Token using Digital Signature Certificates (DSC) stored on USB Tokens and Smart Cards. The solution enables users to digitally sign invoices, agreements, contracts, certificates, tenders, and compliance documents while ensuring document authenticity, integrity, and legal validity.
Our platform supports major USB Token providers and integrates seamlessly with desktop applications, browser extensions, and enterprise systems for a smooth signing experience. Whether you need to sign a single document or process thousands of PDFs in bulk, Signer.Digital provides secure and reliable token-based digital signing capabilities.
Key Features
- Support for USB Tokens and Smart Cards
- Secure PDF digital signing
- Compatible with Class 3 Digital Signature Certificates
- Browser and desktop application support
- Bulk PDF signing capabilities
- Enterprise-grade security and compliance
FAQ Section
What is a PDF Signing Extension?
A PDF Signing Extension allows users to digitally sign PDF documents directly from a web browser without installing desktop applications.
Does the extension support Chrome PDF Signing?
Yes, Signer.Digital supports Chrome PDF Signing with Digital Signature Certificates, USB Tokens, and Smart Cards.
Can I validate PDF signatures in Chrome?
Yes, the extension supports PDF Signature Validation in Chrome to verify the authenticity and integrity of signed PDF documents.
Which browsers are supported?
The extension supports Google Chrome, Microsoft Edge, and Mozilla Firefox on Windows, Linux, and Mac platforms.
Does the extension require Java?
No. The Signer.Digital Browser Extension works without Java applets or ActiveX controls and runs natively on supported operating systems.
