Every change. Found and cited.
Drop in any two versions of a document. DocDiff reads every page, finds every changed word, number and date, and shows you exactly where it is.
Free to start · sign in with just your email · no credit card
Measured on our test suite of 16 real public document pairs (October 2026). How we test
From two files to a checked list of changes.
No setup and no templates. Upload, and the review is ready in seconds.
Upload two files
Any two versions, even in different formats. A PDF against a Word file works.
Every page is read
Text, tables and scanned pages, from a two-page letter to a thousand-page manual.
Changes found and cited
Each one with its page and location, ranked by how much it matters.
Review as a team
Mark each change correct or wrong, share the review and download a report.
The changes people miss.
A moved decimal, a deleted clause, one cell in a 10,000-row price list. DocDiff finds them.
Tables, cell by cell
Rows are matched even when they move, so you see the one value that changed, not a wall of red.
| Item | Code | 2025 | 2026 |
|---|---|---|---|
| Standard support | SUP-01 | $420.00 | $420.00 |
| Priority support | SUP-02 | $880.00 | $940.00 |
| Onboarding | ONB-10 | $1,500.00 | $1,500.00 |
Any format
Compare across formats as easily as within one.
Numbers that matter
Amounts, percentages, dates, codes and IDs are recognized and named in every finding.
Scans included
Scanned pages are read with OCR. Where two engines read a page, any number they disagree on is flagged for you.
Fast at any size
From a short letter to a full manual.
for a 1,349-page pair on a 12-core machine
One tool for every new version.
Contracts and legal
See what changed between drafts and renewals before anyone signs.
Policies and compliance
Track every edit to policies, procedures and regulations you must follow.
Price lists and finance
Find the rates, fees and line items that moved in a new schedule.
Healthcare and insurance
Codes, fee schedules and coverage rules, with every code change named.
Specs and procurement
Compare requirements, tenders and supplier documents version by version.
Manuals and standards
Thousand-page documents, checked in seconds instead of days.
Exact by design. Private by default.
A precise comparison engine decides what changed, so results are repeatable and checkable. AI is used only for the optional plain-English summary, and it sees just the list of changes, never your whole files.
Good to know.
Which files can I compare?
PDF, Word, Excel, CSV, HTML, plain text and Markdown, and scanned pages or images. The two files can be different formats. Each file can be up to 200 MB.
How accurate is it?
The comparison is exact, not a guess: the same two files always give the same result, and every change links back to its page. On our test suite of real public documents, DocDiff caught every known change with no false alarms. You can mark any change as wrong, or report one we missed.
Is my data private?
Your files stay in your workspace and are encrypted in transit and at rest. They are never used to train AI models. Only the optional summary uses AI, and it sees the list of changes, not your files. See the Privacy Policy.
Do I need to install anything?
No. DocDiff runs in your browser. Sign in with your email, and you get a 6-digit code. There's no password to remember.
Can my team use it together?
Yes. Invite people to your workspace as owners, admins or reviewers. Everyone sees the same comparisons and the history of who decided what.
Is there an API?
Yes. Create an API key in your workspace and send two files from your own systems. See the API guide.
Stop proofreading line by line.
Compare your first two documents in under a minute.