What does Line Diff actually do?

Line diff compares two texts line by line. A changed character marks the whole line. It is noisier than the character diff on prose and quieter on code where lines are stable. Nothing is uploaded.

When should I use Line Diff?

Use it for two versions of a config or a log where line identity matters.

When should I not use Line Diff?

Do not use it to review a paragraph. Use the character diff.

What does Line Diff not do?

Not a structural JSON diff. Reordering lines looks like a delete plus an insert.

Line Diff

Compare two text blocks line-by-line and highlight added, removed, and unchanged lines. Free online — runs locally, no upload.

−3

Original

Modified

Line-by-Line Diff

1	1	Line 1
2	2	Line 2
3		−
4		−Line 3
5		−Line 4
	3	+ changed
	4	+Line 3
	5	+Line 4
	6	+Line 5 added

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Line Diff