Text Diff Checker
Paste an original and a changed version to highlight exactly which lines were added or removed.
このコンテンツは英語です。
計算例
Spotting a changed meeting time
Text A: "Dear Sam", "The meeting is at 10am.", "See you then." Text B: the same lines with 11am in the middle line
1 added, 1 removed Dear Sam - The meeting is at 10am. + The meeting is at 11am. See you then.
Lines are compared one by one, so a changed line appears as a removal followed by an addition.
Confirming two lists match
Text A and Text B both contain "Shopping list", "Eggs" and "Milk" on separate lines
The texts are identical. Shopping list Eggs Milk
Unchanged lines are shown with two leading spaces, and the summary confirms there is nothing to review.
Text Diff Checker について
A text diff checker compares two versions of a passage and shows which lines have been added or removed. It is handy for reviewing edits to a contract clause, spotting changes between two drafts of an essay, or checking what changed in a configuration file. Instead of reading both versions in full, you can focus on the lines that differ.
The comparison works line by line, reading each version as a list of lines and reporting which ones differ. A line that changes, even by a single word, usually appears as a removed line followed by an added line, which keeps the output easy to scan. Consistent line breaks between the two versions give the cleanest results.
Text Diff Checker の使い方
- Paste the original text into the first box.
- Paste the revised text into the second box.
- Review the lines marked as added or removed.
- Copy or note the changes you need, then revise your document.
主な使いみち
- Reviewing edits to a contract or policy between two drafts.
- Checking what changed between two versions of a blog post or report.
- Spotting unexpected changes in a configuration file or list of settings.
よくあるご質問
How do I compare two versions of a text?
Paste the earlier version into the first box and the newer version into the second. The checker then lists the lines that have been added and removed between them. Read through those lines to see every change, and make sure both versions use the same line breaks so that unchanged text is not flagged.
What does a text diff show?
A text diff shows which lines were added, which were removed and, by implication, which stayed the same. Added lines are the new material in the second version, while removed lines were present only in the first. Reviewing these changes helps you audit edits without reading both documents from start to finish.
Can I use a text diff checker for code?
Yes, a diff is useful for any plain text, including source code, configuration files and markup. Each line is compared with the other version, so indentation and line order matter. Review the output carefully before acting on it, because a diff only reports what differs and does not judge whether a change is correct.
What should I do if the diff shows too many changes?
Check the line breaks first, because pasting text with different wrapping can make every line look changed. Then remove stray spaces and tabs that may differ between versions. If the differences are real, work through the removed and added lines in order, starting from the top of the text.
Does the text diff checker highlight changes within a word?
The checker compares complete lines, so a change to a single word is reported as the whole line being removed and the new line being added. To find the exact word that changed, compare the removed and added lines by eye. Keeping each sentence on its own line can make small edits easier to spot.