Text Diff は何をしますか？
Text Diff はブラウザ上で入力を比較するツールで、結果と制限を明確に示します。 検証済みの機能： Line-by-line diff, Whitespace normalization, Copyable patch view, Local comparison.
Line diff favors readable revisions
Use this page for configuration files, lists, and prose already divided into meaningful lines. Use JSON Diff for parsed JSON semantics or a word-level review tool for dense paragraphs.
使い方
- Paste the earlier text into Original text and the revision into Changed text.
- Enable Ignore whitespace only when leading, trailing, and repeated spaces should not create a change.
- Read the + and − lines, then copy the plain patch view if needed.
実際の入出力例
Replace one complete line
入力
Original:
alpha
beta
Changed:
alpha
gamma出力
alpha
+ gamma
- betaThis implementation finds a longest common sequence of complete lines; it does not highlight changed characters inside a line.
一般的なエラーと対処
| 症状 | 原因 | 対処 |
|---|---|---|
| One edited sentence appears as a removal plus an addition. | The current comparison unit is the complete line. | Break long prose into stable lines or use a word-level diff when character-level review is required. |
| The page stops a very large comparison. | More than four million line pairs would require unsafe browser memory for the comparison table. | Compare smaller sections or use a streaming command-line diff for large files. |
Important behavior of Text Diff
このツール固有の制限： This release compares complete lines; a changed line appears as one removal and one addition.
標準と実装の参考資料
- GNU Diffutils manual (opens in a new tab)Provides an authoritative reference for line-oriented comparison concepts; this page does not claim GNU patch compatibility.
Text Diff — FAQ
Does the Text Diff upload my input?
No. Processing runs in the current browser tab, and the page does not send tool input to a KitLumi processing endpoint.
What input does the Text Diff accept?
It accepts an original text and a changed text. The workspace checks the input and reports malformed or unsupported values before it produces a result.
What does the Text Diff produce?
It produces a readable line diff with plus and minus markers. Copy and download controls appear when the output format supports them.
What limitation should I know?
This release compares complete lines; a changed line appears as one removal and one addition.
更新内容
実質的な更新： Text Diff: Added Line-by-line diff, Whitespace normalization, Copyable patch view, Local comparison, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.