JSON Schema for Humans

Overview

JSON Schema for Humans is an open-source Python package that turns valid JSON Schema into static HTML or Markdown documentation. It suits developers who want to generate and publish schema reference pages from a command line or Python code. Its flexible output and offline options make it a practical fit, provided your schemas do not depend on its documented unsupported features.

Key features

You can install the package with pip install json-schema-for-humans, then generate documentation through its command-line interface or Python methods. The CLI accepts JSON or YAML schemas from a file, directory, glob pattern, or comma-separated list, which helps when a project maintains several schemas. The project supports JSON Schema Draft-07 and references within a schema, to local files, and to URLs, including circular references.

HTML output includes a JavaScript-based template with expandable sections, tabs for conditional subschemas, and anchor links. The js_offline template bundles CSS and JavaScript resources, so generated pages can be used without an internet connection. Markdown output can be published without an HTTP server and renders in GitHub code browsing. A TechDocs template is aimed at TechDocs and MkDocs Material; flat HTML and Markdown templates are described as works in progress.

One important boundary is schema coverage: property names and size, property dependencies, and media are documented as unsupported. If your schemas use those features, confirm that the generated documentation will serve your needs before adopting the package. For HTML descriptions, tags are escaped by default; configuration can replace that behavior or allow HTML, so teams should choose the setting that fits their content and publishing needs.

Pricing

JSON Schema for Humans is free and open source under the Apache License, Version 2.0. The Free / open source plan costs free and includes generation of static HTML or Markdown documentation. There is no paid tier to trade off against, making it suitable for individual developers and teams seeking a self-managed documentation tool without a software fee. The project invites contributions and directs users to its contributing guide.

Platforms

The package supports Linux, macOS, and Windows, and can be self-hosted. Its Python installation and command-line or Python interfaces suit developers integrating schema documentation into their own workflows.

Who it's for

Choose it if your team maintains JSON Schema and wants navigable HTML, offline pages, or Markdown that can live alongside code. Its reference handling and batch-friendly CLI are useful for projects with linked or multiple schemas. It is a weaker fit when you need API reference generation or rely on the unsupported schema features.

Pros and cons

• Pros: HTML and Markdown outputs, several templates, and both CLI and Python methods give teams options for generating and publishing documentation.
• Pros: Local, URL, and circular references are supported, and the offline template bundles its needed CSS and JavaScript.
• Pros: The default safe mode escapes HTML tags in descriptions, while configuration leaves room to allow or replace HTML when appropriate.
• Cons: Property names and size, property dependencies, and media are unsupported, limiting its fit for schemas that use them.
• Cons: Flat HTML and Markdown templates are works in progress, so users seeking those specific formats should weigh that status.
• Cons: It generates schema documentation rather than API references, so it does not cover that broader documentation need.

Alternatives

Browse Documentation Generators for a broader set of tools. Pick Asciidoctor instead when you need a free, open-source documentation tool with core converters for HTML 5, DocBook 5, and man pages. Kotlin/JS is a free Kotlin compiler target for JavaScript, configured with the Kotlin Multiplatform Gradle plugin, rather than a schema-documentation generator.

Scaladoc is another free option with no paid plans or usage limits stated. Choose Scalar if you need API documentation tooling and can work within its free plan of up to 3 APIs, 1 SDK up to 25 endpoints, 1 editor seat, and 50 Agent Scalar credits. Sphinx offers open-source software under a BSD 2-Clause license that can be installed locally or self-hosted.

Swagger Codegen is the better fit when you need API clients or server stubs as well as documentation generated from OpenAPI specifications. Swift Package Manager is an open-source package management tool, while DocFX is an open-source static site generator that requires .NET SDK 8.0 or higher.

Verdict

Choose JSON Schema for Humans if you want a free, self-managed way to publish static documentation for JSON Schema, especially in offline HTML or GitHub-rendered Markdown. Its combination of references, templates, and command-line and Python interfaces is compelling for that focused job. Look elsewhere if your schemas use its unsupported features or you need API reference generation.