Text Diff

The text diff tool (also called a diff checker) finds the differences between two blocks of text, a task that comes up in code review, document revision and data reconciliation.

• Line by line: compare texts row by row and mark every difference precisely
• Highlighted changes: additions get a green background, deletions a red one
• Side by side: original and revised text sit in two columns for easy reading
• Summary counts: see how many lines were added, removed or changed

When to use it

• Code review: see what changed between two versions and jump straight to the edits
• Document revision: inspect wording changes between drafts
• Data checks: compare two data files for differences
• Configuration: diff two config files

Everything runs in the browser and the text is never uploaded.

Diff tips

• Granularity: comparison is per line, so any character change marks the whole line
• Green rows: lines only present on the right
• Red rows: lines only present on the left
• Best practice: normalize line endings to \n first, otherwise different endings look like real changes