Sign PDF files with valid x509 certificate

C# and VB.NET samples for Docotic.Pdf library

An ASP.NET Core REST API to sign PDF documents using Syncfusion PDF library and Azure key valut

Have you ever wondered how hellosign implemented their features? Wonder no more, checkout this repo for the main features of hello sign..

Signet — a privacy-first PDF editor that runs entirely in your browser. Add text & signatures, animated UI, resume where you left off, and optional accounts (saved signatures, synced preferences & drafts). Your PDF files never leave your device.

A small project on Nestjs about attaching a signature image into a pdf file on a customise location.

This repository contains examples to digitally sign and validate the PDF document using the Syncfusion PDF Library.

A package for easy integration between Laravel applications and Autentique's digital signature service.

eSignature on PDF

A quick start Blazor project that shows how to create a PDF digital signature, customize it, add a timestamp, and add multiple signatures to a PDF document using Syncfusion PDF Library.

🔒 17 free, browser-based PDF tools — split, merge, compress, sign, reorder, watermark, N-up, and more. 100% client-side, no uploads, no server. Built with Next.js, pdf-lib & PDF.js.

Curated directory of 45+ free online PDF tools: merge PDF without signup, compress PDF under 200KB, PDF to Word/Excel/JPG, split, rotate, protect, unlock, sign, watermark, redact, OCR PDF, crop Aadhar card & more. All tools client-side, privacy-first, no account, no uploads. By toolimi.com

Sign PDF documents in Python using PFX/P12 digital certificates with the PDFSignify API. Complete example for digitally signing PDFs, customizing signatures, and adding PDF metadata.

High performant Swift wrapper for the Poppler PDF rendering utilities

This repository contains C# examples using the Syncfusion PDF library to demonstrate deferred PDF signing. Learn how to prepare PDFs for deferred signing, generate a hash for external signing, and apply signatures later in .NET applications with step-by-step guidance.

The actually free PDF editor. Edit, sign, annotate, merge & split PDFs in your browser. No watermark, no signup, no upload. 100% client-side.

Sign PDF using different certificates

Standalone Python library for PDF digital signatures — PAdES/CMS, USB tokens, Windows store, Indian eSign, timestamps, LTV and a green-tick appearance Adobe shows as valid. Zero dependencies.