Paste the original text
Copy your original version into the first text area of the online text diff checker. This is the baseline version you want to compare against, clearly labeled as original for easy reference.
Text Diff Checker
Paste two versions of text and see the differences highlighted instantly. Compare line by line with additions shown in green, deletions in red, and unchanged text in gray. Perfect for reviewing document changes, code diffs, and content edits.
Workspace
Use the tool below. Your inputs stay local when the tool supports browser-only processing.
Workflow
How to use the Text Diff Checker
Paste the modified text
Copy your edited or newer version into the second text area. The online text diff checker highlights differences between the two texts with color coding as soon as both versions are entered.
Review the differences
Additions appear in green and deletions in red so you can review changes at a glance. This online text diff checker helps you verify edits in collaborative documents, track revisions, and ensure no content was lost during editing.
Text Diff Checker — Frequently Asked Questions
How do I use an online text diff checker to compare two documents?
Paste the original text in the left panel and the modified text in the right panel of the online text diff checker. The tool instantly highlights added words in green and removed words in red, making every change visible for quick review.
Can the online text diff checker compare code files or just regular text?
The online text diff checker works with any text-based content including prose, code, configuration files, and data entries. It performs character-level and line-level comparison that catches even small changes like a single semicolon or a corrected typo.