Diff Checker
Compare two texts side by side and find the differences instantly.
Original Text
Modified Text
Diff Result
Frequently Asked Questions
What is a diff checker?
A diff checker (or diff tool) compares two pieces of text and highlights the differences between them. It shows you which lines were added, removed, or modified, making it easy to review changes.
What types of files can I compare?
You can compare any text-based files including code files (JavaScript, Python, HTML, CSS), configuration files (JSON, YAML, XML), documentation (Markdown, text), and more. Binary files are not supported.
What does "ignore whitespace" do?
When enabled, the diff checker ignores differences in spacing, tabs, and blank lines. This is useful when comparing code that may have different indentation styles but is functionally identical.
Is my data secure?
Yes! All comparisons happen entirely in your browser. Your text is never sent to any server, making it safe to compare sensitive or confidential content.