DiagramPreview
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package.json Dependency Diagram

Paste package.json and generate a dependency diagram for documentation, review, or cleanup.

Examples
Detected JSON

This input may work better in the matching tool. Open JSON tool

Dependency diagramReady
Paste package.json and generate a dependency diagram for documentation, review, or cleanup.

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Move this preview into a nearby workflow for conversion, debugging, or export.

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How to use

  1. 1Paste source text into the editor.
  2. 2Load a sample when you need a starting point.
  3. 3Review the generated visualization and export when useful.

Common use cases

Developer documentationCode reviewAI-generated output validation

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FAQ

Does this tool use AI?

No. It parses and visualizes the source locally in the browser.

Visualize package.json dependencies, devDependencies, peerDependencies, and optionalDependencies.

Paste package.json and generate a dependency diagram for documentation, review, or cleanup.

This fits DiagramPreview workflows where developers paste generated or hand-written text and need a fast visual check before publishing documentation.

Demo: map package.json dependency groups

Dependency diagrams help explain why a frontend or Node project installs so much. Grouping dependencies, devDependencies, peerDependencies, and optionalDependencies makes review easier.

  • Separate runtime dependencies from build-only tools.
  • Look for packages that should be peer dependencies in libraries.
  • Use the map during upgrade reviews and bundle-size audits.
{
  "dependencies": {"next": "15.5.19", "react": "19.0.0"},
  "devDependencies": {"typescript": "^5.0.0"}
}

Review checklist: spot dependency risk early

A visual dependency review can catch accidental runtime bloat, duplicated packages, and libraries that pull a project into an unexpected ecosystem.

  • Question large UI or chart libraries in runtime dependencies.
  • Check whether build tools accidentally moved into dependencies.
  • Review monorepo packages for version drift.
dependencies -> shipped to runtime
devDependencies -> build/test only
peerDependencies -> required by consumer

Review checklist for package.json Dependency Diagram

Use package.json Dependency Diagram when you need to inspect source content visually before it becomes documentation, a pull request note, an incident write-up, or a handoff artifact. Visualize package.json dependencies, devDependencies, peerDependencies, and optionalDependencies.

Before exporting, check that labels are readable, relationships match the source, generated examples do not contain private data, and the preview still makes sense after you edit the input.

Limits and troubleshooting

If the preview fails, reduce the input to the smallest complete example, confirm the format syntax, and then add sections back one at a time. Many rendering failures come from partial files, indentation mistakes, missing diagram headers, or copied snippets that depend on hidden context.

Treat the preview as a review surface rather than a source of truth. Generated diagrams, converted files, dashboards, and rule examples should be checked before they are used in production documentation or operations.

Example inputs to test

  • Next app: { "name": "diagrampreview", "dependencies": { "next": "^15.5.19", "react": "^19.2.7", "mermaid": "^11.15.0", "next-intl": "^4.13.0" }, "devDependencies": { "typescript": "^6.0.3", ...
  • Library: { "name": "diagram-utils", "dependencies": { "js-yaml": "^4.2.0", "marked": "^18.0.5" }, "peerDependencies": { "react": ">=18" } }
  • Monorepo: { "name": "workspace", "dependencies": { "turbo": "latest" }, "devDependencies": { "eslint": "^9.0.0", "prettier": "^3.0.0", "typescript": "^6.0.0" } }

Tool maturity

Basic parser

Basic parser

This tool focuses on fast structure inspection. Use it for review and debugging, then verify critical output before production use.

The maturity label is not a quality score. It tells visitors whether the tool is best for stable export, deeper debugging, quick parsing, or AI-assisted generation.