+
+

Related Products

  • MobiPDF
    8,085 Ratings
    Visit Website
  • PDF Guru
    101,414 Ratings
    Visit Website
  • Adobe Acrobat
    8,459 Ratings
    Visit Website
  • PDFCreator
    562 Ratings
    Visit Website
  • Nutrient SDK
    113 Ratings
    Visit Website
  • MobiOffice
    15,853 Ratings
    Visit Website
  • RAD PDF
    3 Ratings
    Visit Website
  • TheBestPDF
    39,558 Ratings
    Visit Website
  • Apryse PDF SDK
    172 Ratings
    Visit Website
  • Stonebranch
    183 Ratings
    Visit Website

About

PDF4 is an all‑in‑one mobile PDF toolkit for scanning, editing, converting, and securing documents directly on your device. It combines robust editing features, like modifying text, images, and pages, merging and splitting files, reordering or rotating content, with powerful conversion tools to transform images or Office formats into PDFs and vice versa (e.g., PDF to Word, PowerPoint, or Excel). It supports OCR for searchable text extraction, password protection, annotations, and form filling. Users can compress files, crop pages, add metadata, watermarks, or barcodes, and leverage automation such as job‑flows for batch processing on a desktop. Extended integrations include browser extensions, Zapier/Power Automate connectors, and Microsoft Teams/Outlook add‑ins, enabling seamless PDF workflows across platforms.

About

PDFSign is a Windows desktop application for securely signing, editing, managing and processing PDF documents. It supports DSC-based digital signing, allowing users to sign individual or multiple PDF files in batch. AutoSign provides automated signing workflows through two modes: Batch Review and Watch Folder, enabling users to configure signing rules and automatically process incoming PDF documents. PDFSign also includes a comprehensive PDF Toolbox with tools to merge, split, reorder, extract, rotate, crop, compress and repair PDFs; edit text; add text and images; annotate, highlight and redact documents; add watermarks, headers/footers and page numbers; perform OCR; convert between PDF and common document/image formats; and fill forms.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Not Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Mobile professionals and administrative workers who need a comprehensive, on‑device PDF solution for scanning, editing, converting, and automating document workflows

Audience

Business Professionals, Small & Medium Businesses, Enterprises, Accountants, Consultants, Legal & Government Users, and Individual PDF Users.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

$1.99/user/month
Free Version Not Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

PDF4
United States
www.pdf4.com

Company Information

PDFSign
Founded: 2017
India
www.pdfsign.in

Alternatives

Alternatives

Pearl eSign API

Pearl eSign API

Pearlinfo Private Limited
SODA PDF

SODA PDF

Avanquest
PDFHaul

PDFHaul

Bultech

Categories

PDF Supported

Categories

Digital Signature Supported
PDF Supported

Integrations

Microsoft 365 Supported
Microsoft Excel Supported
Microsoft Outlook Supported
Microsoft Power Automate Supported
Microsoft PowerPoint Supported
Microsoft Teams Supported
Microsoft Word Supported
Zapier Supported

Integrations

Microsoft 365 Not Supported
Microsoft Excel Not Supported
Microsoft Outlook Not Supported
Microsoft Power Automate Not Supported
Microsoft PowerPoint Not Supported
Microsoft Teams Not Supported
Microsoft Word Not Supported
Zapier Not Supported
Claim PDF4 and update features and information
Claim PDF4 and update features and information
Claim PDFSign and update features and information
Claim PDFSign and update features and information