Best Document Comparison Software in 2026
Updated
In short: PDF24 Compare PDF is ranked #1 of 25 as of 4 October 2026, ahead of Diffchecker and SmarterDiff. The best-ranked option with a free plan is Diffchecker. The lowest first paid tier on this page is Draftable Compare at $1.81/mo.
Reviewing two versions of a document can mean looking for changed text, formatting, or more substantial differences between files. Compare Office file and PDF comparison, formatting-change handling, and redline output to see which listed features suit your review work. Maximum file size and deployment can help determine whether an option fits your documents and working environment. Free-plan availability and paid-from pricing add cost considerations. PDF24 Compare PDF, Diffchecker, and SmarterDiff are among the entries. Think about the file types you handle and whether you need a redline output, then compare the available features and limits against those requirements.
25 document comparison software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
25ranked
10free plans on this page
$1.81/molowest paid tier
4 Oct 2026last checked
Input list Document Comparison Software 25 channels on this page · 122 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromPDF comparisonOffice file comparisonFormatting changesRedline outputDeploymentMaximum file size Spec sheet Score
01 PDF24 Compare PDF Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesnot statedRedline outputnot statedDeploymentwebMaximum file sizenot stated 4/8spec lines stated 8.0
02 Diffchecker Free planYesPaid from15/user/moPDF comparisonnot statedOffice file comparisonnot statedFormatting changesnot statedRedline outputnot statedDeploymentnot statedMaximum file sizenot stated 2/8spec lines stated 7.9
03 SmarterDiff Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputNoDeploymentwebMaximum file sizenot stated 6/8spec lines stated 7.7
04 DocFather Compare Documents Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesNoRedline outputNoDeploymentwebMaximum file size50 MB 7/8spec lines stated 7.4
05 Litera Compare Free plannot statedPaid fromnot statedPDF comparisonnot statedOffice file comparisonnot statedFormatting changesnot statedRedline outputnot statedDeploymentnot statedMaximum file sizenot stated 0/8spec lines stated 7.2
06 Differino Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentwebMaximum file size45 MB 7/8spec lines stated 7.0
07 Document Delta Free planYesPaid fromnot statedPDF comparisonNoOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentwebMaximum file sizenot stated 6/8spec lines stated 7.0
08 AFileFix Document Comparison Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesNoRedline outputNoDeploymentwebMaximum file sizenot stated 6/8spec lines stated 6.9
09 Redline Compare Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesnot statedRedline outputYesDeploymentwebMaximum file sizenot stated 5/8spec lines stated 6.9
10 XKit Document Compare Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesNoRedline outputNoDeploymentwebMaximum file sizenot stated 6/8spec lines stated 6.9
11 Draftable Compare Free planNoPaid from10.75/user/moPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentdesktopMaximum file sizenot stated 7/8spec lines stated 6.8
12 GigAI Document Comparer Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesNoRedline outputYesDeploymentwebMaximum file sizenot stated 6/8spec lines stated 6.8
13 VisibleThread Free planNoPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesnot statedRedline outputYesDeploymenthybridMaximum file sizenot stated 5/8spec lines stated 6.2
14 PDiff Free planNoPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentdesktopMaximum file sizenot stated 6/8spec lines stated 6.1
15 Diff Doc Free planNoPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentdesktopMaximum file sizenot stated 6/8spec lines stated 5.9
16 i-net PDFC Free planNoPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymenthybridMaximum file sizenot stated 6/8spec lines stated 5.9
17 Crowdsourced Redlines Free planYesPaid fromnot statedPDF comparisonnot statedOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentwebMaximum file sizenot stated 5/8spec lines stated 5.8
18 DeltaCompare Free plannot statedPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymenthybridMaximum file sizenot stated 5/8spec lines stated 5.8
19 DrawDiff Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonnot statedFormatting changesYesRedline outputYesDeploymentwebMaximum file sizenot stated 5/8spec lines stated 5.8
20 PdfCompare.app Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonnot statedFormatting changesYesRedline outputYesDeploymentwebMaximum file sizenot stated 5/8spec lines stated 5.8
21 SIDETRACK Free planNoPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesYesRedline outputYesDeploymentdesktopMaximum file sizenot stated 6/8spec lines stated 5.8
22 DocxLens Free planYesPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesnot statedRedline outputnot statedDeploymentwebMaximum file sizenot stated 4/8spec lines stated 5.7
23 Setpdf PDF Compare Free planNoPaid fromnot statedPDF comparisonYesOffice file comparisonYesFormatting changesnot statedRedline outputYesDeploymentwebMaximum file sizenot stated 5/8spec lines stated 5.7
24 UltraCompare Free planNoPaid fromnot statedPDF comparisonnot statedOffice file comparisonnot statedFormatting changesnot statedRedline outputnot statedDeploymentnot statedMaximum file sizenot stated 1/8spec lines stated 5.7
25 Compare Suite Free planYesPaid fromnot statedPDF comparisonnot statedOffice file comparisonnot statedFormatting changesnot statedRedline outputnot statedDeploymentnot statedMaximum file sizenot stated 1/8spec lines stated 5.6
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | PDF comparison | Office file comparison |
|---|---|---|---|---|---|---|---|---|
| 1 | PDF24 Compare PDF | 8.0 | Free plan | Free | Yes | — | Yes | Yes |
| 2 | Diffchecker | 7.9 | Free plan | $15/mo | Yes | 15 /user/mo | — | — |
| 3 | SmarterDiff | 7.7 | Free plan | Free | Yes | — | Yes | Yes |
| 4 | DocFather Compare Documents | 7.4 | Free plan | Free | Yes | — | Yes | Yes |
| 5 | Litera Compare | 7.2 | No | — | — | — | — | — |
| 6 | Differino | 7.0 | Free plan | Free | Yes | — | Yes | Yes |
| 7 | Document Delta | 7.0 | Free plan | Free | Yes | — | No | Yes |
| 8 | AFileFix Document Comparison | 6.9 | Free plan | Free | Yes | — | Yes | Yes |
| 9 | Redline Compare | 6.9 | Free plan | $4.99/mo | Yes | — | Yes | Yes |
| 10 | XKit Document Compare | 6.9 | Free plan | Free | Yes | — | Yes | Yes |
| 11 | Draftable Compare | 6.8 | No | $1.81/mo | No | 10.75 /user/mo | Yes | Yes |
| 12 | GigAI Document Comparer | 6.8 | Free plan | Free | Yes | — | Yes | Yes |
| 13 | VisibleThread | 6.2 | No | — | No | — | Yes | Yes |
| 14 | PDiff | 6.1 | No | — | No | — | Yes | Yes |
| 15 | Diff Doc | 5.9 | No | — | No | — | Yes | Yes |
| 16 | i-net PDFC | 5.9 | No | — | No | — | Yes | Yes |
| 17 | Crowdsourced Redlines | 5.8 | No | — | Yes | — | — | Yes |
| 18 | DeltaCompare | 5.8 | No | — | — | — | Yes | Yes |
| 19 | DrawDiff | 5.8 | No | — | Yes | — | Yes | — |
| 20 | PdfCompare.app | 5.8 | No | — | Yes | — | Yes | — |
| 21 | SIDETRACK | 5.8 | No | — | No | — | Yes | Yes |
| 22 | DocxLens | 5.7 | No | — | Yes | — | Yes | Yes |
| 23 | Setpdf PDF Compare | 5.7 | No | — | No | — | Yes | Yes |
| 24 | UltraCompare | 5.7 | No | — | No | — | — | — |
| 25 | Compare Suite | 5.6 | No | — | Yes | — | — | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which document comparison software is ranked first on Specifiction?
PDF24 Compare PDF is ranked #1 of 25 with a score of 8.0. Diffchecker is second and SmarterDiff third.
How many of these have a free plan?
10 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: $1.81/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.