All tools
Compare Text
Spot every difference between two blocks of text, line by line.
Original
Changed
Both texts are compared in your browser — nothing is sent to a server.
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Compare Text — frequently asked questions
Does it compare word by word or line by line?+
Line by line, using a longest-common-subsequence diff — the same approach code review tools use.
Is there a size limit?+
It handles typical documents easily. Very large inputs (tens of thousands of lines) may be slow because the diff is computed in your browser.
Is my text uploaded?+
No. Both versions are compared locally and never sent anywhere.
你們會把我的檔案上傳到伺服器嗎？+
不會——這裡的每個工具都完全在你的裝置上處理檔案，不會向伺服器上傳任何內容。唯一的例外是 AI 工具，它們會把擷取的文字（而非檔案本身）傳送給 Claude 來完成工作。
有檔案大小限制嗎？+
我們沒有人為設下限制，但由於處理過程在你的瀏覽器中進行，非常大的檔案（超過 500MB 或 1000 頁）會受你裝置記憶體的限制，而非我們的限制。
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