- Is this Diff Checker free to use?
- Yes, the Diff Checker is completely free with no limitations. Compare as many texts as you need without registration or usage restrictions.
- Is my data private when comparing texts?
- Yes, all text comparison happens locally in your browser using JavaScript. Your texts are never uploaded to any server. This is especially important when comparing sensitive documents, code with proprietary logic, or confidential information.
- What types of content can I compare?
- You can compare any plain text including code in any programming language, configuration files, markdown documents, CSV data, or general prose. The tool performs line-by-line comparison and highlights additions, deletions, and unchanged lines with clear visual indicators.
- What does ignore whitespace do?
- The ignore whitespace option treats lines as equal if they differ only in spaces, tabs, or indentation. This is useful when comparing code that may have different formatting but is functionally identical. Similarly, ignore case treats uppercase and lowercase letters as equal.
- Can I copy the diff output?
- Yes, use the Copy Diff button to copy the comparison results in a standard unified diff format with + for additions, - for removals, and spaces for unchanged lines. This format is widely recognized and can be shared or used with other diff tools.