Text Diff Checker

How do I use the Text Diff Checker?

1. 1

   Paste the original text on the left.

2. 2

   Paste the changed text on the right.

3. 3

   See the diff highlighted below.

What is the Text Diff Checker?

The Text Diff Checker compares two texts and shows you exactly what was added, removed or kept the same. Line-by-line highlighting makes it easy to spot changes between drafts, config versions or copy-edits.

Who is the Text Diff Checker for?

Editors comparing manuscript drafts, developers reviewing config changes, translators checking revisions, and legal teams spotting contract differences.

Why use the Text Diff Checker?

• Line-by-line diff view.
• Additions and removals colour-coded.
• Handles thousands of lines.
• Instant recalculation.
• Runs offline.

When should I use the Text Diff Checker?

• Reviewing edits between blog post drafts.
• Comparing two versions of a config file.
• Spotting translation changes between revisions.
• Checking contract clause differences.
• Auditing changes to a policy document.

Is the Text Diff Checker safe and private?

Yes. This tool runs entirely inside your browser - your text is never uploaded, stored on our servers or shared with third parties. You can even disconnect from the internet after the page loads and it will keep working. That makes it safe for confidential notes, drafts, private messages and unpublished work.

How do I get the best results from the Text Diff Checker?

• Line-based diff is ideal for code and lists; prose may need paragraph-level comparison.
• Use Remove Extra Spaces first to hide whitespace-only differences.
• Combine with Text Comparer for a similarity percentage.
• For very large files, paste in sections.

Frequently asked questions

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