使用方式
先完成一次順手的操作
- 在左側欄貼上原始文字，右側欄貼入修改後版本。
- 選擇比對模式：行 / 詞 / 字；工具預設自動偵測 CJK 並切換為字符模式。
- 在差異面板中查看綠色新增與紅色刪除的行內高亮標記，確認具體改了哪個字詞。
文字差異比對器 Diff Checker
貼上兩份文字，立即看出哪個字詞改了——中文逐字、英文逐詞，都精準比對。 Paste two texts to instantly see what changed — character-by-character for CJK, word-by-word for Latin.
原文 ORIGINAL
修改版 MODIFIED
貼上文字以查看差異 Paste text to see the diff
快速導覽
使用情境、常見問題與相關工具
把需要的說明放在工具下方，讓第一次使用與之後回來複用都更順。
英文搜尋: text diff checker、compare two texts online、CJK aware diff tool、Chinese text comparison、inline word diff、find differences between texts
常見情境
這個工具實際適合拿來做什麼
- 翻譯審稿貼入兩版中文段落，自動切換為逐字模式，精確標出每個改動的字——不只是整行標紅。
- 設定檔差異比較貼入舊新兩版 YAML 或設定文字，用逐詞模式快速找出關鍵參數變更。
- 雙語版本校對先載入中文範例感受逐字 diff，再貼入英文草稿確認逐詞比對——同一工具處理兩種語言。
常見問題
先把常見疑問說清楚
這個工具如何處理中文字？
自動偵測輸入文字是否以 CJK 字符（中、日、韓）為主。若 CJK 字符佔非空白字符的 30% 以上，則切換為逐字比對；以英文為主則使用逐詞比對。你也可以手動切換「行 / 詞 / 字」模式。
跟一般 line diff 工具有什麼不同？
一般 diff 工具只會標記整行。本工具還會在每個變更行內顯示具體改動的字或詞——用帶色底紋的 inline span 標出，讓你不用閱讀整行也能看出哪裡改了。
我的文字會上傳到伺服器嗎？
不會。所有比對運算完全在你的瀏覽器中執行，不會上傳、儲存或傳送任何資料給伺服器。
可以比對很長的文字嗎？
可以。多段落的文件即使數千字也能精準比對，只標出改動的字詞。唯一限制是「單一行」若超過約 500 個比對單元（極長又完全沒有換行的內容），為了維持效能會自動改用整行比對——該行會標上「整行比對」提示，顯示整行新增／刪除而非逐字高亮。一般有換行的文章、翻譯稿、設定檔都不會受影響。
Quick guide
Use cases, answers, and nearby tools
Compact below-tool notes that help first-run users and repeated visitors move faster without changing the main interface.
Chinese search: 文字差異比對、比較兩份文字、中文差異比對工具、逐字比對、文字對比、版本差異查詢
How to use
Run a clean first pass
- Paste the original text in the left panel and the modified version in the right panel.
- Choose granularity — Line / Word / Char — or let the tool auto-detect CJK and switch to character mode.
- Read the diff panel: colored gutter strips mark added and removed lines; inline highlights show exactly which tokens changed.
Examples
Real jobs this page helps with
- Translation reviewPaste two versions of a Chinese paragraph; auto mode highlights the exact changed characters inline, not just the whole line.
- Config file diffPaste old and new YAML or JSON config text; word mode highlights specific parameter changes at a glance.
- Bilingual copy proofingLoad the CJK example to see character diff, then paste English content to confirm word-level diff — one tool for both languages.
FAQ
What people usually want to know
What makes this different from a standard line diff tool?
Most diff tools only mark entire lines as changed. This tool also highlights exactly which characters (for CJK text) or words (for Latin text) were added or removed inline within each changed line — making it much more useful for prose and translation review.
How does it handle Chinese text?
It auto-detects CJK input: if CJK characters are 30% or more of non-whitespace content, it switches to character mode since Chinese words have no space boundaries. You can also manually select Line / Word / Char mode.
Is my text uploaded to a server?
No. All comparison runs entirely in your browser — nothing is sent to a server, stored, or transmitted.
Can it compare very long text?
Yes. Multi-paragraph documents of several thousand characters compare accurately, highlighting only the changed tokens. The one limit is a single line longer than ~500 compare units (very long content with no line breaks): to stay fast it falls back to whole-line compare for that line — the row is tagged "whole-line" and shows the entire line as added/removed instead of inline highlights. Normal text with line breaks (articles, translations, config files) is unaffected.