How to compare two document versions before adopting one
Compare the text of two files locally to see added, removed, and changed lines with a clear verdict: identical, similar, or changed.
Open Document Comparison mode and choose the two files (PDF, DOCX, or TXT).
Review the changed line pairs one by one and decide whether the differences are expected.
Keep the right version as your reference and record the differences before sharing either file.
Why compare before approving
Contracts, reports, and drafts circulate in versions, and 'final_v3_revised.docx' is not an answer to what changed. A line-level comparison answers precisely: lines only in version A, lines only in version B, and changed line pairs. That is the difference between trusting a document and verifying it.
Read the verdict correctly
The tool issues one of three verdicts after counting change pairs: identical (zero differences), similar (a bounded set of changed pairs), or changed (large differences across the document). 'Similar' is deliberately not a synonym for 'safe' — it means the diffs are few enough to review completely. 'Changed' means review by sections, not by skimming.
Local extraction is the whole pipeline
Both files are read locally: PDF and DOCX text is extracted in the browser, and the diff runs on that text without sending it anywhere. Scanned PDFs carry no extractable text, so run them through OCR first — otherwise the comparison reports differences between empty texts, which is worse than no comparison at all.
Keep the decision with the people
A diff tells you what differs; it cannot tell you which version should win. After comparing, record the reviewed differences in a note along with the file names, and keep both versions until the decision is final — the right workflow ends with a human picking the authoritative copy.
Compare fairly across formats
DOCX and PDF wrap text differently, so cross-format comparisons can flag paragraph breaks as changes. Prefer comparing like with like — DOCX against DOCX, PDF against PDF — and normalize obvious artifacts such as copied headers before you read the verdict; the line-diff counts pairs of paragraphs, not file containers.
File Maktab content is educational and reflects current tool limits. No affiliate links are active in this version.