Free Text Diff Checker
Compare drafts, notes, code snippets, or copied text and see what changed between two versions.
Related guides: How to Compare Two Text Files and Find Differences
How this tool helps
A text diff checker helps when two versions look similar but small edits matter. You might be reviewing a rewritten paragraph, comparing configuration snippets, checking a support reply, or confirming that a copied block did not lose an important line. The comparison runs locally and highlights additions and removals for faster review.
How to use it
- Paste the older version into the first box and the newer version into the second box.
- Run the comparison, then scan the line summary before looking at detailed word changes.
- Use the highlighted output to decide whether a change is intentional, accidental, or worth checking in the original source.
Practical tips
- Normalize extra blank lines before comparing if spacing is not important to your task.
- For code or structured data, review punctuation carefully because a tiny character change can alter behavior.
- When editing public copy, compare the final text after formatting so smart quotes, bullets, and line breaks are included.
FAQ
What do the colors mean?
Removed text is shown in red and added text is shown in green so version changes are easier to scan.
Is this a code review tool?
It is a lightweight browser diff for text; dedicated version-control tools are better for large software changes.
Does the comparison leave my browser?
No. The two text blocks are compared by JavaScript on the page.