COPY CHECKER
To begin, paste your two text files into the two text boxes.
Press Compare, and our diff checker will compare the texts.
View results, with missing text in red and new text in green.
Our Diff Checker tool accurately compares two text files. You can rely on our results and save hours on text comparison.
Handles multi-line inputs smartly for JSON, HTML, or extensive text comparison. Ignores whitespace for code comparison.
The result section will highlight added lines in green and removed lines in red. Unchanged lines are not highlighted.
Compatible with PC, Mac, iPhone, and Android. Works on Chrome, Firefox, Safari, and Edge.
Your files never leave your browser. All the processing is done on the server. Your content is private and secure with us.
Access the tool online for free. No signup or software installation is required. You can compare text files right away.
Diff Checker is an online text difference checker tool. It allows you to compare two text files and identify the differences. It helps compare two text files to identify similar or missing text.
This difference checker online compares text by finding character differences including case sensitivity detection. It will generate color-highlighted text comparison results so you can observe edited, deleted, or inserted texts clearly.
Comparing text files online saves your time. It’s perfect for anyone who needs to track changes across versions—developers can spot code edits at a glance, editors can proofread manuscript revisions, and legal teams can verify contract updates without missing a clause.
No more manual line-by-line checking—just paste, compare, and let the diff checker do the work. Content managers use it to audit website copy or blog post updates, translators to confirm every text alteration, and QA teams to ensure documentation stays accurate.
We provide more than just text comparison. You can check your grammar mistakes, generate different font styles, or even check plagiarism on our platform.
Absolutely. Text comparison is a basic task that should be accessible to everyone—no fees or sign-ups required.
When you click Compare, both texts appear side by side with every deletion from text-box-1 is marked in red—showing exactly what’s been removed or changed—and every insertion into text-box-2 is marked in green—revealing new or updated content. The synchronized view lets you move seamlessly through your document, so you can instantly spot and review each red and green change in context.
100% safe. We don’t even upload your text to our servers, files are processed on your browser, so you can feel safe pasting your text here.
Our advanced algorithms let you compare large text files without any issue. Just paste your text file contents into our text comparison tool to get results fast.
Yes. Our tool works on any modern device with internet access—no extra software needed.
A simple visual guide for finding differences between two text files
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