Text Compare Online — Find Differences Instantly

Compare two text blocks line by line. Instantly highlight additions, deletions, and changes. Free online diff tool — no data uploaded.

About Text Compare Online — Find Differences Instantly

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This free online text compare tool performs a line-by-line diff on any plain text content — source code, configuration files, markdown documents, SQL scripts, log output, or prose. Added lines are highlighted in green and removed lines in red. The diff summary shows the total count of changed, added, and removed lines so you get an instant overview of the scope of changes. It works with any plain text regardless of format and handles documents with thousands of lines. No signup is required and your text is never uploaded to any server — comparison runs entirely in your browser.

Key Features

  • Line-by-line diff for any plain text: code, SQL, configs, logs, markdown, prose
  • Green highlights for added lines, red for removed lines — Git-style output
  • Diff summary: total changed, added, and removed line counts at a glance
  • Works with any plain text format — no file type restrictions
  • Handles large documents with thousands of lines efficiently
  • Your text never leaves your browser — 100% client-side, free, no signup

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