Compare two texts side by side と see differences instantly. Highlight added, removed, と modified lines. 無料, fast, と 100%クライアントサイド.
Text Diff is a free online tool that compares two blocks of text と highlights their differences. It shows added lines in green, removed lines in red, と unchanged lines in gray. Perfect for comparing code, documents, notes, と any text content. すべて processing happens entirely in your browser — データはサーバーに送信されません.
Line mode compares entire lines と marks whole lines as added, removed, or unchanged. Character mode goes deeper と shows exactly which characters within each line were changed. Use Line mode for documents, Character mode for code.
いいえ. すべて comparison happens entirely within your browser. We do not store, transmit, or log any of your input or output text.
はい! Text Diff works with any plain text, including code, JSON, XML, CSV, markdown, と more. Character mode is especially useful for spotting small changes in code.
There is no artificial limit. The tool uses a native JavaScript diff algorithm that runs entirely in your browser. For very large texts (tens of thousands of lines), you may experience slower processing depending on your device performance.
Currently, Text Diff works with copy-pasted text. You can open any file in a text editor, select all, copy, と paste it into the input area. Support for direct file upload may be added in a future update.
いいえ, Text Diff is designed for plain text only. Binary files (images, executables, archives) cannot be meaningfully compared as text. For binary comparisons, use dedicated tools like WinMerge or specialized hex diff utilities.
Git diff is command-line based と requires a Git repository. Text Diff is a visual, browser-based tool that works with any two text blocks without any setup. It is ideal for quick comparisons, non-technical users, or when you do not have Git installed.
はい. Text Diff is fully responsive と works on smartphones, tablets, と desktops. The interface adapts to smaller screens by stacking the input areas vertically.