Text Compare
Paste your original and changed text below to instantly see a line-by-line diff, with added lines highlighted in one color and removed lines in another.
How to use
- 1
Paste the original text
Add the first version of your text into the left box.
- 2
Paste the changed text
Add the updated version into the right box.
- 3
Review the diff
Added and removed lines are highlighted instantly below, with a summary count.
Examples
- Original: "Hello world" → Changed: "Hello there world" → 1 line removed, 1 line added
- Comparing two paragraphs with one sentence edited highlights just that line
Frequently asked questions
How does the comparison work?
The tool compares the two texts line by line using a longest-common-subsequence algorithm, the same approach used by most code diff tools, to find the smallest set of additions and removals.
Does it compare word-by-word or line-by-line?
This tool compares line-by-line. If a single word changes within a long line, the whole line is marked as removed and the updated version as added.
What do the + and − symbols mean?
A + prefix and highlight marks a line that's present only in the changed text. A − prefix and highlight marks a line that's present only in the original text. Unmarked lines are unchanged.
Is my text stored anywhere?
No. The comparison runs entirely in your browser. Nothing is sent to a server or saved.