Text Compare
Summarises how two texts differ: whether they are identical, a similarity score from 0 to 1, and how many lines were added, removed, or left unchanged. Use it when you want the shape of the change rather than a line-by-line listing. Enter the two texts separated by a line containing "===". Runs entirely in your browser — nothing is sent to a server.
Summarises how two texts differ: whether they are identical, a similarity score from 0 to 1, and how many lines were added, removed, or left unchanged. Use it when you want the shape of the change rather than a line-by-line listing. Enter the two texts separated by a line containing "===". Runs entirely in your browser — nothing is sent to a server.
Use cases
- Checking how much two drafts of a document overlap
- Confirming two files are byte-for-byte identical
Examples
One changed line
alpha beta gamma === alpha BETA gamma
{
"identical": false,
"similarity": 0.6667,
"unchanged": 2,
"added": 1,
"removed": 1,
"leftLines": 3,
"rightLines": 3
}FAQ
Is my text sent to a server?
No — this tool runs entirely in your browser.
How is similarity calculated?
Matching lines are counted on both sides and divided by the total number of lines in both texts, giving 1 for identical texts and 0 for texts sharing no lines.
What is the difference from Text Diff?
Text Diff lists every changed line. Text Compare reports the totals and a similarity score instead.