PDF Signer is a desktop and online tool for adding digital signatures to PDF documents, aimed at individuals and small teams. It supports certificate-based signing and can preserve signed-document integrity.
💡 Pick it when you need professional PDF editing, forms, redaction, and signing in one application.
Adobe Acrobat offers advanced OCR capabilities and a wide range of PDF editing features.
Starting from $14.99/month
Foxit
💡 Choose it for a lighter Acrobat alternative that still combines advanced PDF editing and digital signatures.
Foxit PDF Editor is a cross-platform PDF editor for individuals, teams, and enterprises that need editing, conversion, signing, and document security. It...
From $129/year
💡 Pick it for a powerful Windows PDF editor with a free tier and optional one-time licensing.
PDF-XChange Editor is a robust PDF editor with a wide range of features for viewing, editing, and annotating PDF documents.
Starting from $43.50
💡 Choose it when you want a full desktop PDF suite and prefer a one-time license over a subscription.
Nitro PDF Pro is a feature-rich PDF editor with robust annotation and collaboration capabilities.
Starting at $159.99 (one-time purchase)
💡 Pick it for quick browser-based signing and everyday PDF utilities without installing desktop software.
Smallpdf offers a wide range of PDF tools including conversion, compression, and editing.
Free with paid options
JSignPdf contributors
💡 Choose it for free, local, open-source certificate signing when you can tolerate a more technical workflow.
JSignPdf is an open-source Java application for digitally signing PDF files with X.509 certificates. It is intended for technically inclined users and...
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