Highlight Text Differences

Compare two texts and clearly highlight the lines that differ, making it easy to see what changed between versions.

Example

Input

Line A
Line B

Output

+++ ADDED +++
Line C

--- REMOVED ---
Line B

How Highlight Text Differences Works

Compare two texts and clearly highlight the lines that differ, making it easy to see what changed between versions.

This tool runs entirely in your browser — no data is sent to any server. Paste your text, click Run, and get your result instantly. You can also chain this tool with others using the pipeline feature: run Highlight Text Differences, then continue with a related tool to build a multi-step text workflow.

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Full diff between two documents.

Find Missing Lines

Find lines in Text A that are missing from Text B.

TextRefinery is a free, open-source text processing toolkit. Learn more about regular expressions and text processing on the web.