How do I use Compare files in Adobe Acrobat to check for changes between two contract PDFs?

Open Acrobat and go to All tools. Select Compare files. Choose your old and new contract PDFs. Pick a compare mode if needed. Click to compare and view the summary of changes.

If my contract PDF is protected with a password, can I use Compare files in Acrobat?

No, Compare files will not work if either file is protected. You must remove the password or any security settings first. Try to open the PDF and remove protection before comparing.

How is Compare files in Acrobat different from just reading two contracts side by side?

Compare files Reading side by side. Shows all changes automatically You must find changes yourself Gives a summary and easy navigation No summary, can miss small edits Saves time with big documents Takes longer and is harder to check

Why should I use the 'Compare text only' option in Acrobat when comparing two contracts?

It ignores pictures and graphics, focusing only on words. This helps when you only care about text changes, not images. It makes the comparison clearer for contracts with logos or design elements.

◆ Acrobat · edit

Compare Contract Versions

Compare the newly digitized contract with the cataloged version to spot differences: run a document comparison between…

2ready prompts

5real tasks

3roles

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AI prompts

2 ways to ask · copy any one

AExecute — “help me do it”Compare the newly digitized contract with the cataloged version to spot differences: run a…+

Compare the newly digitized contract with the cataloged version to spot differences: run a document comparison between the two [PDFs], generate a redline report highlighting changes, save the comparison as '[filename=Contract_XYZ_compare.pdf]', and review flagged variations.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

BImprove — “do it better”Before I present the contract comparison, produce a single PDF that highlights differences…+

Before I present the contract comparison, produce a single PDF that highlights differences between the May 3 signed contract and the negotiated draft, add margin notes summarizing whether each negotiated compliance clause was incorporated, and flag any omissions that would require post-signature remediation before procurement escalates the issue.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

How to do it

the tool · the steps · what to avoid

1
Open Adobe Acrobat on your computer.
2
Go to Tools and select Compare Files.
3
Click Select File under 'Compare' and choose your first PDF (the older or original version).
4
Click Select File under 'With' and choose your second PDF (the newer or revised version).
5
Click Compare to start the comparison.
6
Review the results in the comparison summary and use the side-by-side view to examine highlighted differences.
Best practiceFor best results, avoid using scanned PDFs as input files, as text recognition may be inconsistent.

In the appWith the API

You can filter the comparison results to focus on text, images, or formatting changes for a clearer review.

This runs in the Acrobat app - there is no separate API for this task.

Glossary

words on this page

Compare filesThis feature shows you the differences between two PDF documents.

Protected PDFA PDF file that has security settings, like passwords or restrictions, stopping some actions.ExampleThis protected PDF requires a password to open and prevents anyone from printing its contents.

Summary pageA page that shows all the changes found between the two compared files.

The real tasks

all 5, listed here

Compare a newly digitized contract with the previously cataloged version to spot differences.

Review two versions of a vendor contract to confirm negotiated compliance obligations were incorporated.

Compare the original contract and the customer's redlined version to find changes that affect pricing.

Review and compare the original service contract and the amended version to spot any changes to deliverables.

Decide when to accept a subcontractor’s nonstandard clause by comparing the submitted version to our standard agreement and documenting the differences for management.

FAQ

about this task

Open Acrobat and go to All tools.
Select Compare files.
Choose your old and new contract PDFs.
Pick a compare mode if needed.
Click to compare and view the summary of changes.

Compare files in Adobe Acrobat checks two PDF documents and finds all the differences. This is important because it lets you quickly see what has changed between versions, which helps avoid mistakes in contracts or other important documents.

No, Compare files will not work if either file is protected.
You must remove the password or any security settings first.
Try to open the PDF and remove protection before comparing.

Compare files	Reading side by side
Shows all changes automatically	You must find changes yourself
Gives a summary and easy navigation	No summary, can miss small edits
Saves time with big documents	Takes longer and is harder to check

It ignores pictures and graphics, focusing only on words.
This helps when you only care about text changes, not images.
It makes the comparison clearer for contracts with logos or design elements.

Compare Contract Versions

When to use it

AI prompts

How to do it

Glossary

The real tasks

Who does this

FAQ

Sources

Adobe help

When it fails