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Semantic JSON/YAML Diff

Compare JSON or YAML documents semantically and highlight added, removed, and changed values by path. Use this free online tool directly in your browser.

Processed locally — your data never leaves your browser
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What is Semantic JSON/YAML Diff?

A semantic diff compares two structured documents by their logical content rather than their raw text. Unlike a line-by-line text diff, a semantic diff understands the structure of JSON and YAML — it detects when a key was added, a value was changed, an array element was appended, or a nested field was removed, reporting each change with its full dot-notation path. This is far more useful than a text diff when the serialization format changed (e.g., key reordering, whitespace differences, or JSON-vs-YAML conversion) but the data is identical. Use it to compare API responses across versions, detect configuration drift between environments, audit schema migrations, and review changes to structured data files before merging them.

How to use

  1. 1

    Paste or enter your data in the Semantic JSON/YAML Diff input area.

  2. 2

    Run the conversion, generation, or validation action.

  3. 3

    Copy or download the result for your project workflow.

Common Use Cases

  • 1

    Compare two API response payloads across versions to detect breaking schema changes

  • 2

    Detect configuration drift between staging and production environment files

  • 3

    Audit JSON schema migrations by comparing before and after versions field-by-field

  • 4

    Validate that a YAML-to-JSON conversion preserved all data without loss or mutation

  • 5

    Review changes to a Kubernetes manifest by comparing the old and new YAML documents

Try an Example

Config change detection

Load this example to see added, changed, and removed fields highlighted by path.

Example Input

Before: {"version":"1.2.0","timeout":30}
After: {"version":"1.3.0","timeout":60,"cache":true}

Frequently Asked Questions

What is Semantic JSON/YAML Diff?

Semantic JSON/YAML Diff is a free browser-based utility on Bite Size Tools. Compare JSON or YAML documents semantically and highlight added, removed, and changed values by path.

Is Semantic JSON/YAML Diff safe to use with sensitive data?

Yes. Tool processing runs in your browser, so your input is not sent to a server by default in this app.

Can I use Semantic JSON/YAML Diff for production work?

Yes. You can use the output directly in development and production workflows after validating it with your project requirements.

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