AFileFix Document Comparison
AFileFix Document Comparison is a free web tool for comparing two versions of a document.
What AFileFix Document Comparison is
AFileFix Document Comparison is a free web tool for comparing two versions of a document. It identifies text that was added, removed, or modified, and accepts PDF or DOCX files, including mixed-format pairs, up to 25 MB per file. Results appear on screen, with a downloadable DOCX report that explains each change in plain English and why it might matter. It is recommended for structured, text-heavy documents such as contracts, policies, proposals, terms of service, and manuals. Both files are sent to Anthropic's Claude API; AFileFix says it deletes them from its server within minutes. Anthropic retains API data for up to 30 days for safety review, then permanently deletes it and does not use it to train AI models. The tool compares text, not layout. It does not support scanned or password-protected PDFs, and it does not OCR scanned files. Documents over approximately 150 pages may be truncated. Each run compares one pair, without three-way comparison, Word track changes, or legal redline output.
Good
- Free to use with no signup
- Accepts PDF and DOCX pairs up to 25 MB each
- Provides a downloadable DOCX report
- Explains changes in plain English
Watch out
- Scanned and password-protected PDFs are unsupported
- Does not detect layout-only changes
- Documents over approximately 150 pages may be truncated
- Compares one pair, not three documents
Who it suits
It suits people comparing structured, text-heavy documents in PDF or DOCX format who want explanations of textual changes. It is not suited to scanned PDFs, layout-only reviews, or workflows that require redline output.
Verdict
AFileFix is geared toward straightforward text comparisons and provides explanations in a downloadable report. Check its file, length, and comparison-scope limits before using it for a document review.
Plans and prices
From AFileFix Document Comparison's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Free; no signup · PDF or DOCX, up to 25 MB per file · documents over approximately 150 pages may be truncated |
The facts
Each one read from AFileFix Document Comparison's own pages, with the date it was checked.
What it does
- AI data retention
- The page says Anthropic retains API data for up to 30 days for safety review, then permanently deletes it, and does not use it to train AI models.checked 4 Oct 2026
- AI processing
- The comparison sends both files to Anthropic's Claude API, and AFileFix says it deletes them from its server within minutes after processing.checked 4 Oct 2026
- Best suited to
- The page recommends structured, text-heavy documents such as contracts, policies, proposals, terms of service, and manuals.checked 4 Oct 2026
- Comparison scope
- Each run compares one pair of documents; it does not provide automatic three-way comparison, Word track changes, or legal redline output.checked 4 Oct 2026
- File limits
- Scanned PDFs and password-protected PDFs are not supported, and the tool does not OCR scanned files.checked 4 Oct 2026
- Long documents
- Documents over approximately 150 pages may be truncated, with content beyond the analyzed portion left out of the comparison.checked 4 Oct 2026
- Purpose
- The tool compares two document versions and identifies added, removed, and modified content.checked 4 Oct 2026
- Report
- Results appear on screen, and a downloadable DOCX report includes the analysis.checked 4 Oct 2026
- Supported files
- It accepts PDF or DOCX files, including mixed-format pairs, up to 25 MB per file.checked 4 Oct 2026
- Visual changes
- The comparison focuses on text content and does not detect layout-only changes such as font, spacing, page breaks, or margins.checked 4 Oct 2026
Money
- Change explanations
- Each change includes a plain-English explanation that describes what changed and why it might matter.checked 4 Oct 2026
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