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Glossary Development

Text diff

A diff compares two texts and lists what was added, removed or left unchanged, usually line by line.

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In more detail

It finds the longest common subsequence of lines and reports everything else as a change. A modified line shows as one removal plus one addition, so changing 1 of 3 lines gives 1 removed, 1 added and 2 unchanged. Version control tools such as Git are built on this idea.

Try these tools

Text Diff Checker

Compare two blocks of text line by line and instantly see what was added, removed, or unchanged.

JSON Diff Checker

Compare two JSON objects and see exactly which keys were added, removed, or changed -- ignores key order.

Sort Lines

Sort lines of text A to Z, Z to A, numerically, in natural order or by length.

Remove Duplicate Lines

Remove duplicate lines from any list, or show only the repeated or only the unique lines.

See also

  • Glossary Git
    Git is a distributed version control system that records snapshots of a project's files so you can track changes, go back and collaborate.
  • Guide How Text Analysis and Editing Tools Work
    How words and reading time are counted, Flesch readability, naming-case styles, line diffs, sorting, de-duplication and escaping for JSON.
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