YAML Diff
Compare two YAML documents line by line
YAML Diff is a free online tool from BrowserUtils that compare two yaml documents line by line. It runs entirely in your browser — your data never leaves your device. No account required.
Enter YAML in both panels to see differences
How to use YAML Diff
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About YAML Diff
Free online YAML diff tool. Compare two YAML documents side by side and see added, removed, and modified lines with color-coded output. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
YAML Diff specs
- Runtime
- 100% client-side (browser)
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
How does the YAML diff work?
The tool compares YAML documents line by line using a longest common subsequence algorithm, showing added lines in green, removed lines in red, and unchanged lines in the default color.
Is the comparison structure-aware?
The diff is line-based, which works well for YAML since its indentation-based format aligns structure with lines. For structure-aware comparison, try the JSON Diff tool with YAML converted to JSON first.
Can I compare Kubernetes YAML manifests with this tool?
Yes. Paste two YAML manifests (e.g., deployment configs from different environments) and see exactly which lines differ. This is useful for auditing configuration drift between staging and production.
Does this YAML diff tool handle multi-document YAML files?
The tool compares the raw text of whatever you paste, so multi-document YAML separated by --- will be diffed as plain text. Each document separator is treated as a regular line in the comparison.
Is my YAML data sent to a server for comparison?
No. The diff algorithm runs entirely in your browser. Your YAML content never leaves your machine.
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