Free open-source web software for signing PDF (alone or with others) and also organize pages, edit medata and compress pdf

Control how your documents get signed

A tool to sign PDF files. With Linux support.

PDFSigner is a multipurpose PDF signer and verifier application for Advanced Electronic Signature (AES) and Qualified Electronic Signature (QES)

📑 HTML5 Javascript Online Offline Browser Editor 📜 for PDF files for insert sign, images, photos, comments or annotations

A vue PDF editor component

Digitally sign PDF document from your phone using handwritten signature or image.

🔏 Sign PDFs with the portuguese citizen card (aka "cartão de cidadão")

Trexo PDF Signer is a professional-grade, open-source application designed for creating legally binding digital signatures on PDF documents. Built with enterprise security standards in mind, it provides seamless integration with hardware security modules (HSM), software certificates, and native platform keystores.

Windows executable for sign a PDF with a certificate and a hanwritten signature

一个强大的OFD/PDF签章工具，支持格式转换、文档加密、电子签名、数字印章和完整性保护。A powerful OFD/PDF signing tool that supports format conversion, document encryption,electronic signature, digital seal, and integrity protection.

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

Free desktop PDF signer: draw signature and initials, place anywhere, add text boxes, zoom, resize, and export signed PDFs.

Firma massiva in formato PADES usando una smartcard

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.

Google KSM Signer implementation for pyHanko

This is a Node.js API for signing PDF documents using certificates

🖊️ Sign PDFs easily with pdf-sign, a Rust utility that supports OpenPGP and Sigstore for secure, keyless document signing and verification.

Sign PDF documents online instantly using typed, drawn, or uploaded digital signatures. Securely add electronic signatures to PDFs for free with no signup required – Toolsnak.