Text & JSON Diff Viewer
Compare two blocks of text or code to instantly see the differences. Additions and deletions are clearly highlighted.
No differences found, or inputs are empty.
The Diff Viewer is an essential tool for developers, writers, and editors who need to track changes between two versions of text or code. It provides a quick and clear visualization of what has been added, removed, or modified, making it easy to review edits, merge changes, or debug code. All comparisons are performed instantly and securely in your browser, so your data is never sent to a server.
- Paste your original text into the 'Original Text (A)' box.
- Paste the modified version into the 'Changed Text (B)' box.
- The tool will automatically display the differences in the 'Differences' section below.
- Use the options to switch between comparing by lines, words, or characters, and to toggle case-sensitivity for the comparison.
What do the colors mean?
Green highlighted text indicates content that was added in the second version. Red highlighted text indicates content that was removed. Un-highlighted text is content that remained unchanged between both versions.
When should I use line, word, or character diffs?
Line diffs are best for code, where changes are often made on a line-by-line basis. Word diffs are ideal for prose, as they clearly show changes to sentences and paragraphs. Character diffs are useful for finding very small, subtle changes within a single word or data string.
Is my data secure?
Yes. All text comparison is performed on your device in your browser. Your text is never sent to our servers, ensuring complete confidentiality.