Online Text & Code Diff Checker
Compare two text blocks or source code files side-by-side. Instantly highlight added lines (green), removed lines (red), and modified characters.
Key Features
- Side-by-side and Split line diff view modes
- Character-level and word-level difference highlighting
- Supports JSON, HTML, Code, and plain text comparison
- Ignore whitespace and case sensitivity toggles
- Fast client-side diff algorithm
How to Use Text & Code Diff Inspector
- Paste original text into Left box and modified text into Right box.
- View instant highlighted additions (green) and deletions (red).
- Toggle Side-by-Side or Inline view.
- Click Copy Diff Summary.
Frequently Asked Questions
What is a text diff checker used for?
Diff checkers compare two versions of text or code to identify exact changes, additions, and deleted lines.
Can I compare source code files (JS, Python, HTML)?
Yes, it works on code snippets, JSON files, configuration files, and plain text notes.
Can I ignore trailing spaces and whitespace differences?
Yes, check the "Ignore Whitespace" toggle option.
Is my input code uploaded anywhere?
No, comparison runs completely inside your browser local session.