文档比对NEW
逐行或逐词对比两篇文档差异
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AllFreeTool is a free online document comparison tool that shows you exactly what changed between two versions. You paste the original and the revision, or drop in two files, and the tool marks every added line, removed line and unchanged line. You can switch between a line-by-line view and a word-by-word view for a closer look, and export the whole comparison as a report. It runs locally in your browser.
It suits checking a contract against its latest revision, seeing what changed in a policy document, reviewing an edited draft before it goes out, or comparing two versions of a script. The word-level mode is the one to use when a change is a small rewording inside a paragraph rather than a whole new section.
Why use 文档比对 on AllFreeTool?
Added and Removed
Every inserted line is highlighted and every deleted line is marked in the result.
Word Level View
Switch from a line comparison to a word comparison to isolate small edits.
File or Text Input
Drop in two files, or paste the two versions straight into the panels.
Local Comparison
The diff runs in your browser, so no document is uploaded or stored.
How to use 文档比对
Provide Both Versions
Paste the original into the left panel and the revision into the right, or load two files.
Compare
Choose line or word mode and press compare to see the marked differences.
Export the Report
Read through the added, removed and unchanged counts, then export the comparison.
Common questions
When should I use word mode instead of line mode?＋
Line mode is best when whole paragraphs or sections were inserted or removed, because it shows the structure of the change at a glance. Word mode compares within each line, which is what you want when a sentence was reworded and you need to see exactly which words moved.
Can I compare two files directly?＋
Yes, you can drop two files into the two panels instead of pasting. This is convenient when you have an original document and a revised file, and the tool reads them locally so nothing is uploaded.
What do the counts in the result mean?＋
The three figures count the added lines, the removed lines and the unchanged lines in the comparison. Together they tell you how substantial the revision is, and the coloured view shows you where each change sits in the document.
Is my document uploaded to a server?＋
No. The comparison is computed inside your browser, so both versions stay on your machine and are never transmitted or written to a database. This makes the tool suitable for contracts, policies and any other confidential material.