Text Diff Checker
Compare two versions of text side-by-side. Automatically highlight additions, deletions, and changes.
Text Comparator (Diff Checker)
Find and highlight differences between two blocks of text. Perfect for comparing versions of documents.
How Does the Text Comparator Work?
Our diff checker compares two versions of text line by line, highlighting additions in green, deletions in red, and unchanged lines in gray. This makes it easy to spot differences between documents, code, or any text content.
Frequently Asked Questions
- What is a diff? A diff shows the differences between two files or texts, commonly used in version control systems.
- How accurate is the comparison? This tool performs a line-by-line comparison. For more advanced diffs, consider using specialized software.
- Can I compare large texts? Yes, but very large texts may take longer to process and display.
Why Use a Diff Checker?
Spotting the difference between two blocks of text is tedious and error-prone for humans, but instant for computers. Whether you're a developer, writer, or legal professional, a Diff Checker saves hours of manual proofreading.
👨💻 For Developers
Debug code by comparing a working version with a broken one. Review changes before committing to Git. Check minified files against source.
✍️ For Writers
Compare drafts to see what your editor changed. Verify that requested revisions were made. Check for accidental deletions.
⚖️ For Legal/Business
Compare contract versions to ensure no unauthorized clauses were added. Verify terms and conditions updates.
🎓 For Students
Check your essay against a friend's to ensure you haven't accidentally plagiarized or to see how they rephrased a paragraph.
How to Read the Results
Our tool uses a standard color-coding system familiar to anyone who uses version control systems:
- Red Background: Indicates content that exists in the Original text but was removed in the Modified version.
- Green Background: Indicates content that was added to the Modified version.
- Neutral/White: Indicates content that is identical in both versions.
This visual approach lets you scan a large document in seconds and focus only on the parts that matter—the changes.
Privacy and Security
Your Data Stays Local
Unlike many server-based tools, our Text Comparator runs entirely in your browser using client-side JavaScript.
This is a critical feature for:
- Sensitive Code: You can paste proprietary algorithms or API keys without fear of them being logged on a server.
- Legal Documents: Compare confidential contracts safely.
- Personal Data: Check lists containing emails or addresses securely.
Tips for Effective Comparison
- Clean your text: If comparing code, run it through a formatter (like our JSON Formatter) first. Differences in indentation can look like changes even if the logic is the same.
- Focus on blocks: If the tool highlights a huge block as changed, check if a single bracket or line break shifted everything.
- Use for lists: Sort two lists alphabetically (using our Text Formatter) and then compare them to find missing items instantly.
Frequently Asked Questions
What is a Diff Checker? ▼
"Diff" stands for difference. A Diff Checker is a software utility that computes and displays the differences between two files or text sources. It's a staple tool in software development (part of Git, SVN) but is equally useful for anyone editing text. It highlights exactly what characters, words, or lines have been modified.
Can I compare code snippets? ▼
Yes, it's one of the best use cases. You can compare HTML, CSS, JavaScript, PHP, Python, or any text-based code. It helps you identify why one version works and another doesn't, or review what a colleague changed in a shared file.
Is there a limit to the text size? ▼
Since the processing happens on your computer, the limit depends on your browser and available memory (RAM). Generally, you can compare very large texts (thousands of lines) without issues. Extremely large files might cause a momentary slowdown but will usually process successfully.
Does it ignore whitespace? ▼
Our tool generally performs a strict comparison. This means if you add an extra space or a new line, it will be marked as a difference. This is often desired in coding where syntax is strict. For prose, it ensures you catch even subtle formatting changes.
Is my data secure? ▼
Yes. We prioritize privacy. The comparison logic is executed entirely by your web browser. No data is sent to our servers or any third party. Once you close the tab, the data is gone from the browser's memory.