Compare text to find differences
Diff Checker is a fast, reliable tool for comparing two pieces of text and identifying the differences between them. Whether you're comparing code, documents, or simple notes, Diff Checker highlights changes line-by-line and word-by-word so you can easily spot what's new, what's been removed, or what's been modified. Ideal for writers, editors, developers, and students, this tool streamlines version comparison and helps you maintain clarity in content evolution.
Using Diff Checker saves you time, reduces mistakes, and gives you peace of mind when comparing content. Instead of manually combing through two texts to find what changed, you get a clear visual breakdown of every modification. This reduces the chance of missing small but important edits, and ensures better communication when collaborating or editing with others. The tool runs entirely in the browser, meaning your content stays private and secure. No data is uploaded to a server, so you can confidently use it for sensitive text. Its simplicity also means there's no learning curve—just paste, click, and review. Whether you're a professional or a casual user, the clean interface and responsive design make it a pleasure to use on both desktop and mobile devices.
| Criteria | Manual Comparison | Diff Checker |
|---|---|---|
| Time Taken | Long | Instant |
| Accuracy | Error-prone | High |
| Ease of Use | Moderate | Very Easy |
| File Support | No | Yes |
| Highlight Changes | No | Yes |
| Save/Export Option | No | Yes (PDF) |
| Copy Text Support | No | Yes |
Here are answers to some of the most common questions about the Diff Checker to help you better understand how it works and what you can do with Diff Checker.
A Diff Checker is a tool that compares two pieces of text and highlights any differences between them.
You paste or upload two text blocks, and the tool visually highlights changes such as additions, deletions, or modifications.
Yes, the Diff Checker is completely free to use in your browser.
Paste or upload your original and modified texts into the respective boxes and click "Find Difference."
It switches the original and changed texts, allowing you to view the comparison from the opposite perspective.
Yes, you can copy either the original or changed text using the dedicated copy buttons.
Yes, the tool is fully responsive and works on smartphones and tablets.