Text Tools
Compare two text blocks and show line-by-line differences.
Use this text diff checker to compare two text blocks and show which lines are equal, added, removed, or changed. It is useful for notes, configs, code snippets, copied content, drafts, and quick text comparison.
Use this text diff checker to compare two text blocks and show which lines are equal, added, removed, or changed. It is useful for notes, configs, code snippets, copied content, drafts, and quick text comparison.
Use text diff checker when you need a fast browser-based result without extra setup. It works well for quick checks, one-off tasks, and routine formatting or calculation work.
Read step-by-step usage guidance, best practices, and common mistakes.
See common questions and answers about input, output, and tool usage.
Review practical input and output examples before running the tool.
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Input
line one line two --- line one line three
Output
Line-by-line diff result
Shows which lines stayed the same and which lines changed.
Fix: Use the expected format so the tool can detect both text blocks correctly.
Fix: Use JSON Diff Checker if the source content is JSON.
Fix: Review whether spaces and blank lines matter for your use case.
You can use JSON with left and right fields or separate the two text blocks with a line containing ---.
It shows a summary plus line-by-line diff results with line numbers and change types.
It is useful for comparing drafts, copied text, notes, configs, and simple code snippets.
Yes. It works online in the browser.
Use text diff when you care about plain lines of text. Use JSON diff when the input is JSON and you want structure-aware comparison.