Diff Checker
Compare two text blocks and instantly highlight additions, removals, and unchanged lines.
About This Tool
Diff Checker
Compare two blocks of text or code side-by-side and instantly highlight every addition, deletion, and change.
Why Use This Tool?
- Compare two versions of a document, code file, or contract for changes
- Review what changed between old and new versions of a configuration file
- Useful for QA testing to spot differences in output or content
- Writers use it to track edits between drafts
- Identify plagiarism or unintended modifications in documents
Overview
Comparing two versions of text manually is tedious and error-prone. Our Diff Checker highlights every difference between two blocks of text side-by-side — additions in green, deletions in red. Used by developers comparing code versions, writers reviewing edits, and QA teams checking output changes. Works for code, documents, configuration files, or any text content.
How to Use
-
1
Paste Original Text
Add the original/older version of your content in the left panel.
-
2
Paste New Text
Add the modified/newer version in the right panel.
-
3
Compare
Differences are highlighted automatically — green for additions, red for deletions.
-
4
Review Changes
Navigate through differences using the next/previous change buttons.
-
5
Export Diff
Copy or download the diff report for documentation.