By VictoriaThu. 17 Jul. 20253min Read

How to Compare Two PDFs

Looking to compare two PDF files and improve review efficiency? Discover the top 10 tools and learn how to use PDF Reader Pro for accurate comparisons.
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In today’s digital era, we are puzzled by different versions of one document. Whether editing files, reviewing contracts, or updating reports, especially processing PDF documents, identifying the difference between 2 versions is important.

 

Fortunately, the document comparison feature has simplified this workflow. In this blog, we will introduce the top 10 PDF compare tools and how to use PDF Reader Pro to compare the differences between 2 PDF files.

 

Top 10 PDF Compare Tools in 2025

Here, we list a table to compare the top 10 popular PDF comparison tools in market: 

 

Get Started with PDF Reader Pro Today!

 

PDF Comparison Tool Main Features Platforms Price Range Suitable For Pros Cons
PDF Reader Pro PDF editing, compare, convert, annotate, sign Windows, macOS Free / Paid Business, legal, personal use Full features, easy to use, cross-platform Some advanced features paid
Adobe Acrobat Pro DC Professional editing, compare, OCR, convert Windows, macOS Subscription Professionals, enterprises Powerful, industry standard Expensive, steep learning curve
DiffPDF Text, image, layout compare Windows, macOS Free Basic users Simple, free, open source Basic features, old interface
ABBYY FineReader PDF OCR, scan compare, edit, convert Windows, macOS Paid Scan document users Strong OCR, good for scanned PDFs Expensive, hardware demanding
Foxit PDF Editor Edit, compare, annotate Windows, macOS Paid Small businesses, office use Fast, modern interface, affordable Some features need extra purchase
Nitro PDF Pro Edit, convert, compare, annotate Windows Paid Windows users, midsize firms Good value, full features Windows only
ComPDF Comprehensive PDF editor with PDF comparison Web Free Compare text PDF file and design drawings Without limitations and all features are free. Web only
Kaleidoscope File, image, code compare (Mac only) macOS Paid Mac users, designers, developers Multi-format support, clean UI Mac only
Draftable Online/desktop compare, PDF & Word Web, Windows, macOS Free / Paid Cross-platform users Online and desktop, easy to use Free version limits, privacy concerns
TextCompare PDF Text-only compare Windows Free Proofreaders, text-heavy docs Fast text compare No image or layout compare
Compare Suite Multi-format compare (PDF, Word, Excel) Windows Paid Enterprise use Supports many file types Expensive, outdated UI
  

How to Compare Two PDF Files Using PDF Reader Pro?

PDF Reader Pro is a PDF tool that has comprehensive features, such as comparing documents, editing, converting, annotating, signing, encrypting, and more. It is a popular choice for users when they compare PDF files because of its user-friendly interface and easy-to-use operations.

 

In this part, we will show you how to compare 2 PDF files using PDF Reader Pro. And it supports Windows and Mac devices.

 

Step 1: Install PDF Reader Pro and run it on your desktop.

 

Step 2: Click the “Open File” button and upload one of the comparison documents. 

 

Open and read PDF files with PDF Reader Pro   

Step 3: Click “Tools” and choose the Compare option.

 

Choose the PDF Comparing mode of PDF Reader Pro  

Step 4: Choose the comparison mode: Side-by-side view or Compare by File Overlay.

 

choose to compare PDFs side by side or in one file

 

Step 5: Upload another PDF document and set the comparison. 

 

Settings of PDF compare 

Then, you will get the result, and you can find every difference directly. 

 

Performance of comparing PDFs

  

FAQs About Compare PDF Files

Q1: Why Compare PDF Files?

A: It can help users to find all changed content between different versions and avoid missing important changes. Ensures the consistency and accuracy of information. 

 

Q2: Is PDF Comparison Feature Suitable for Scanned Files? 

A: Yes. PDF Reader Pro supports the OCR feature that is used for identifying and comparing the text differences in scanned files. 

 

Q3: Is it safe to Use Online PDF Comparison Tools?

A: We’re not supposed to upload files containing sensitive information to an online platform. It is a better choice to choose local tools like PDF Reader Pro if it contains sensitive information. 

 

Q4: Whether to Export or Save the Result File?

A: Sure! Most of the tools all support saving result files in the PDF format with annotations for achieving and communication.

 

Final Words

Comparing 2 PDF files is an essential part of efficient office work, especially in processing important files like contracts, reports, technical documents, and so on. With the help of professional tools, no need to view the PDF one page, and you can check every change quickly.

 

Whether you are a company user or a personal user, PDF Reader Pro offers a stable and efficient document comparison experience.

Get Started with PDF Reader Pro Today!

Get Started with PDF Reader Pro Today!