YAML Diff & Compare
Paste two YAML documents to see highlighted line-by-line differences, a change summary, and a similarity percentage. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
two YAML config files
Example Output
changed keys highlighted
How to Use
- 1Paste the first YAML documents (A) in the left box and the second (B) in the right box.
- 2Adjust the options if needed (ignore case, whitespace, or empty lines).
- 3Click Compare (or press Ctrl+Enter).
- 4See the highlighted differences, a summary of how many changes there are, and the similarity percentage. Switch between side-by-side / unified / inline views.
About YAML Diff & Compare
YAML Diff & Compare parses both YAML inputs into data structures and compares them key by key. Because it is structure-based, indentation or quote-style differences that do not change meaning are not treated as changes.
Perfect for comparing config files (CI/CD, Kubernetes, docker-compose) across versions or environments.
FAQ
What is the difference between "diff" and "compare"?
Both are done by the same tool. "Diff" highlights the lines/parts that changed (added/removed), while "compare" shows how similar the two inputs are (similarity percentage + summary). You get both at once here.
Is my data sent to a server?
No. The entire comparison is computed in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.