Free browser-based comparison tool

Text Diff Checker

Compare two versions of text, code, notes, articles, JSON, emails, or documents and quickly find added, removed, changed, and unchanged content.

Compare text online and find differences

A text diff checker helps you compare two versions of text and quickly identify what was added, removed, or changed. It is useful for office documents, code snippets, articles, emails, reports, contracts, notes, JSON, configuration files, and copied text from different sources.

This tool is designed for quick browser-based comparison. Paste the original text on the left, paste the modified text on the right, choose a comparison mode, and review the differences with summary counts.

When should you use a text diff checker?

• Compare two versions of an email, article, report, or document.
• Find changes in code, JSON, HTML, CSS, SQL, or configuration text.
• Check whether edited text changed the meaning of the original.
• Review text copied from Word, PDFs, websites, or spreadsheets.
• Find missing lines, extra words, spelling changes, or formatting differences.

Tips for better comparison

• Use line mode for long documents and code.
• Use word mode for paragraphs and rewritten content.
• Use character mode for short values, IDs, formulas, and typo checks.
• Turn on ignore case when uppercase/lowercase changes are not important.
• Turn on ignore whitespace when extra spaces should not count as changes.

FAQ