Compare two texts side by side and see exactly what changed — with clear red (removed) and green (added) highlighting
Shows original text on the left and new text on the right. Red for removed, Green for added. Best for detailed line-by-line comparison.
Shows all changes in a single column. Red with "−" for removed lines, Green with "+" for added lines. Great for seeing the full context of changes.
Shows differences within the same line with character-level highlighting. Red strikethrough for removed characters, Green for added characters. Perfect for spotting small text changes.
💡 Tip: Red = removed from original | Green = added in new version | Yellow = modified
You're reviewing a document and need to know what changed between versions. Or you're a developer comparing code snippets to find that one bug. Maybe you're a writer checking if your editor changed more than they should have. Manually scanning two documents line by line is exhausting and you will miss things. A text diff checker does the comparison for you in milliseconds. Just paste your original text and your new text, and the tool shows you exactly what changed — with red highlighting for removed text and green highlighting for added text. No more endless scrolling, no more missed edits, no more guessing what was added or removed. This compare text differences tool handles everything from simple word changes to complex document comparisons.
A text diff checker is a tool that compares two pieces of text and highlights the differences between them. Instead of manually comparing documents side by side and trying to spot changes with your eyes, you paste both texts into the tool. The tool analyzes them character by character and line by line, then displays the differences using color coding. For example, if you want to compare two text files to see what changed between versions, this tool shows you exactly what was added (green), what was removed (red), and what was modified (yellow). It's like having a highlighter that automatically marks every single change in your documents.
People use a diff checker constantly without realizing how much time it saves. Developers compare code differences to find bugs and review pull requests. Writers track edits between drafts. Students check for plagiarism by comparing their work to source materials. Even lawyers use it to compare contract versions. This tool eliminates the headache of manual comparison and gives you a clear, visual breakdown of every change.
Comparing texts seems simple until you try it with real documents. How do you spot a single changed word in a 5000-word document? How do you find a missing comma in a code file? How do you track every edit made by a collaborator? A compare text differences tool removes all that mental friction. Whether you're reviewing a contract, debugging code, editing an essay, or comparing data exports, this tool gives you the exact differences without second-guessing. No more "wait, did they change that paragraph or did I imagine it?" Just paste, compare, and see every change clearly marked in red (removed) and green (added).
You don't need to understand diff algorithms or line-by-line comparison methods. Follow these steps:
Need to compare two text documents that are long? The tool handles documents of any length. Need to check differences in code? The tool preserves formatting and shows exact character changes. The results appear instantly the moment you click compare. You can also switch between views — side by side, unified, or inline — depending on how you prefer to see the changes.
Different people compare text differences for completely different reasons. Here's who uses this tool daily:
Even simple text comparison has common pitfalls. Here's what to watch for:
Inaccurate text comparison has real consequences. Miss a line in a legal contract and you might agree to terms you didn't intend. Overlook a bug fix in code and you might deploy broken software. Fail to catch a typo and your professional reputation suffers. This text diff checker eliminates those risks by providing mathematically precise results every time. The tool uses the Myers diff algorithm — the same algorithm used by Git and other version control systems — to ensure accuracy down to the individual character. Whether you're comparing two sentences or two 10,000-word documents, the results are always exact. This tool gives you confidence that you've seen every single change between your texts.
Pro tip: When comparing code or structured data (JSON, XML, HTML), always use the "word wrap" option turned off to preserve formatting. This makes it easier to see structural changes.
After comparing your texts, check out these complementary tools on MiniToolsPro:
Simply copy the content of both files and paste them into the original and new text areas. Click "Compare Texts" and see all differences highlighted — red for removed, green for added. You can also upload files directly using the file upload feature.
Side by side view shows the original text on the left and the new text on the right, with red (removed) and green (added) highlighting in each panel. Unified view shows a single text block where added text is green and removed text is red with a strikethrough.
Yes. The tool shows exactly which characters changed within a line. For example, if you change "color" to "colour", the tool highlights "u" in green (added) and shows the exact change.
Absolutely. The tool preserves all formatting and shows exact character differences with red (removed) and green (added) highlighting, making it perfect for comparing code files, JSON, HTML, XML, and other structured data.
When enabled, the tool ignores extra spaces, tabs, and line breaks when comparing text. This means "Hello World" and "Hello World" (with two spaces) will be considered the same.
You can compare texts of any length. The tool handles everything from a few words to documents with tens of thousands of characters.
Yes. You can copy the diff as plain text with + (green/added) and - (red/removed) markers, or export it as an HTML report that preserves the color coding and formatting.
Yes. Everything runs locally in your browser. Your text is never sent to any server. You can disconnect from the internet and the tool still works perfectly.
The similarity percentage shows how similar the two texts are, from 0% (completely different) to 100% (identical). This helps you quickly assess how much has changed between versions.
This tool is designed for comparing two texts. If you need to compare multiple versions, you can do multiple pairwise comparisons or use version control tools like Git.
Yes. The interface is fully responsive and works perfectly on phones, tablets, and desktop browsers. No app download needed.
Completely free. No signup, no limits, no watermarks. Use it as many times as you need for personal, professional, or business use.
You shouldn't need to strain your eyes scanning two documents to find differences. Whether you're a developer reviewing code, a writer editing content, a lawyer comparing contracts, or a student checking your work, this text diff checker gives you the answers instantly with clear red (removed) and green (added) highlighting. No signup, no ads, no privacy concerns. Just paste your texts and see every single difference. Bookmark this tool for the next time someone asks "what changed between these versions?" or "can you check if this paragraph matches the original?" It's faster than manual comparison and way more accurate than your eyes. Try it right now with any two texts — you'll be surprised how often you reach for it.