Top PDF Software for Installed - Windows

Between them, the 10 PDF software on this page cover convert to PDF (9), merge / append (9), digital signature (8) and encryption (8). 10 of them have written a profile you can read before you get in touch.

1. 1

   

   Foxit Reader

   Convert to PDF · Merge / Append · Digital Signature

   Foxit Reader belongs to the Foxit family of PDF tools. The company sells software for viewing, editing, signing and managing PDF files, and also provides tools for developers to…

   Write a review

   Why #1: 24/7 support · Uptime SLA · SOC 2 Type II · GDPR compliant, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

2. 2

   

   novaPDF

   Convert to PDF · Merge / Append · Digital Signature

   novaPDF works as a virtual printer on Windows computers. Any program with a Print menu, button or dialog can send a document to it, and the result is a standard PDF file.

   Write a review

   Why #2: Launched 2005, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   Smallpdf

   Convert to PDF · Merge / Append · File Type Conversion

   Smallpdf is a Swiss company that makes web-based document tools centred on PDF files. It describes its approach as stripping out unneeded features and concentrating on ease of use.

   Write a review

   Why #3: Launched 2013, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

4. 4

   

   PDF Reader Pro

   Convert to PDF · Merge / Append · File Type Conversion

   PDF Reader Pro is document software for viewing and working on PDF files across desktop and mobile.

   Write a review

   Why #4: GDPR compliant, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

5. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
6. –

   

   DocShifter

   Convert to PDF · Merge / Append · File Type Conversion

   DocShifter converts documents to PDF automatically, adds enrichment and runs quality checks. It handles many input formats and stores the finished renditions where users want them.

   Write a review
7. –

   

   Email to PDF for Outlook

   Convert to PDF · Merge / Append · Encryption

   Email to PDF for Outlook is an add-in that equips Microsoft Outlook to convert emails and their attachments into PDF.

   Write a review
8. –

   

   Kofax Power PDF Advanced

   Convert to PDF · Merge / Append · Digital Signature

   Kofax Power PDF Advanced is a PDF application aimed at business users. It lets staff make, convert, edit and share PDF documents.

   Write a review
9. –

   

   PDF4me

   Convert to PDF · Merge / Append · Digital Signature

   PDF4me is an online document tool for working with PDF files. It combines simple everyday functions, such as joining pages, with more advanced ones, such as text recognition on…

   Write a review
10. –

    

    PDFsam Basic

    Merge / Append

    PDFsam Basic is an open source desktop application for working with PDF files. The name stands for PDF Split and Merge.

    Write a review
11. –

    

    Adobe Acrobat Reader DC

    Convert to PDF · Digital Signature · PDF Reader

    Adobe Acrobat Reader DC is a PDF reader. People use it to open and read PDF files on their computers.

    Write a review

Articles

Latest insights

The newest guides and analysis from TrustList Insights.

All articles

Python

26 Oct 2026 · TrustList Editorial

Python 3.15.2 and four other releases block eMudhra keys in ssl

The expedited releases distrust the compromised eMudhra intermediates inside the ssl module, so pip is safe even before it is updated. A…

United States of America

26 Oct 2026 · TrustList Editorial

.NET out-of-band update fixes Brotli overflow and tarball flaw

Microsoft shipped .NET 8.0.33, 9.0.22, 10.0.14 and 11 RC3 outside the monthly cycle, and re-released two October fixes that did not fully…

Singapore

26 Oct 2026 · TrustList Editorial

Singapore fines Singtel S$1m over March mobile outages

A vendor left a chiller valve shut after maintenance, and the failover Exchange then buckled under the extra 5G load. IMDA found both…