YAML Diff & Compare Tool
The YAML Diff tool compares two YAML documents and highlights the differences between them line by line. Both inputs are first parsed and normalized to consistent formatting, so purely cosmetic differences like indentation style, trailing whitespace, or comment placement are ignored — only meaningful semantic changes are shown in the diff output.
The diff viewer uses a unified format with color-coded lines: green lines with a + prefix indicate additions in the modified document, red lines with a − prefix indicate removals from the original, and unchanged lines provide context. Line numbers for both the original and modified documents are displayed side by side for easy cross-referencing.
This tool is invaluable for DevOps engineers reviewing configuration changes before deployment, developers auditing Kubernetes manifest updates, or anyone who needs to understand what changed between two versions of a YAML file. The comparison runs entirely in your browser with no server-side processing, keeping your configuration data private and secure.
- Side-by-side YAML input with diff output
- Semantic comparison ignoring formatting differences
- Color-coded additions, removals, and unchanged lines
- Dual line numbers for original and modified
- Normalizes YAML before comparison
- Runs entirely in the browser — no data sent to servers
Example Input
# Original: name: my-app replicas: 2 image: nginx:1.24 # Modified: name: my-app replicas: 3 image: nginx:1.25
Example Output
name: my-app -replicas: 2 +replicas: 3 -image: nginx:1.24 +image: nginx:1.25