Best Document Comparison Software in 2026
Updated
In short: PDF24 Compare PDF is ranked #1 of 25 as of 3 October 2026, ahead of SmarterDiff and Diffchecker. The best-ranked option with a free plan is SmarterDiff. The lowest first paid tier on this page is Draftable Compare at $0.90/mo.
For reviewing revisions or checking how two files differ, focus first on the formats and changes that matter to your work. Compare Office file and PDF comparison, formatting-change handling, and whether redline output is available. Maximum file size and deployment add practical considerations, while free-plan availability and paid-from details help you assess access. Diffchecker, SmarterDiff, and Differino lead the ranking, with Draftable Compare and Compare Suite next. The listed criteria offer a way to compare file support and output alongside limits and deployment options, so you can narrow in on what fits your document workflow.
25 document comparison software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 PDF24 Compare PDF Top pick · 7.6 Free plan · Free
#2 SmarterDiff Runner-up · 7.5 Free plan · Free
#3 Diffchecker Also great · 7.3 Free plan · $15/mo
- Free plan AndroidiOSLinuxmacOSWebWindows
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
RecognisedDocumentedFree planPlatforms - Free plan AndroidiOSLinuxmacOSWebWindows
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- No
RecognisedDocumentedFree planPlatforms - Free planFree trial LinuxmacOSWebWindows
- Free plan
- Yes
- Paid from
- 15 /user/mo
RecognisedDocumentedFree planPlatforms$15/mofirst paid tier About DiffcheckerVisit site - Free plan apiWeb
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial Web
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- No
- Redline output
- No
RecognisedDocumentedFree planPlatforms - Free plan apiWeb
- Free plan
- Yes
- PDF comparison
- No
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- No
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms$4.99/mofirst paid tier About Redline CompareVisit site - Free trial self-hostedWindows
- Free plan
- No
- Paid from
- 10.75 /user/mo
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms$0.90/mofirst paid tier About Draftable CompareVisit site - AndroidiOSmacOSWebWindowsRecognisedDocumentedFree planPlatforms
- WebWindowsLinux
- Free plan
- No
- PDF comparison
- Yes
- Office file comparison
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- No
- Redline output
- No
RecognisedDocumentedFree planPlatforms - WindowsmacOS
- Free plan
- No
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- No
- Redline output
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms -
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- No
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- PDF comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- PDF comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- PDF comparison
- Yes
- Office file comparison
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- PDF comparison
- Yes
- Office file comparison
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- No
- PDF comparison
- Yes
- Office file comparison
- Yes
- Formatting changes
- Yes
- Redline output
- Yes
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- No
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which document comparison software is ranked first on Everything Xiaomi?
PDF24 Compare PDF is ranked #1 of 25 with a score of 7.6. SmarterDiff is second and Diffchecker third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Draftable Compare has the lowest first paid tier we found: $0.90/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.