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.

CONTENTS

Top 10 PDF Compare Tools in 2025

How to Compare Two PDF Files Using PDF Reader Pro?

FAQs About Compare PDF Files

Final Words

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:

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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!