What input formats does the generator accept?

OpenAPI JSON, OpenAPI YAML, and structured annotated comments.

Can I change the appearance of the HTML output?

Yes, choose between Slate or Paper themes in the Theme selector.

Is it possible to exclude code examples from the generated docs?

Yes, uncheck the Include Examples option to omit response samples.

Does the tool support auto-detecting OpenAPI versions?

Yes, set Source Format to Auto Detect to parse JSON or YAML automatically.

Can I generate a PDF suitable for printing?

Yes, select PDF as the Output Format for a print-ready document.

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API Doc Generator

Generate polished API documentation from OpenAPI or annotated comments

Details

What this tool helps you do

Generate polished API documentation from OpenAPI/Swagger specs or structured code comments.

Output formats

Interactive HTML
Markdown
PDF

Included sections

Endpoint overview
Parameters and request body
Response examples
Error code reference

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Prepared example runs

Click an example to fill the form automatically. File inputs still need an upload.

2 examples

Generate Markdown docs from an OpenAPI schema

Turn a compact OpenAPI document into a Markdown reference with parameters, responses, schemas, and error codes.

# Demo User API Version: 1.2.0 ## Endpoints ### GET /users/{id} **Summary:** Get user by ID

Render annotated comments as interactive HTML

Use structured comment tags to build an HTML API page while disabling examples and schema sections.

<article class="endpoint"><div class="endpoint-header"><span class="method">POST</span><code>/invoices</code></div><h3>Create invoice</h3>

Inputs

Set the required fields, then run the tool.

7 options

ContentPaste or type the main input values.2

API SourcetextareaRequiredDocument TitletextOptional

SettingsAdjust formats, ranges, numbers, and modes.3

Source FormatselectOptionalOutput FormatselectOptionalThemeselectOptional

TogglesEnable or disable optional behavior.2

Include ExamplescheckboxOptionalEnabled when checkedInclude SchemascheckboxOptionalEnabled when checked

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

API Doc Generator

What this tool helps you do

Run this tool

Prepared example runs

Inputs

Result

Examples that match this tool

Continue with connected tools and hubs

Prepared example runs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Markdown API Guide for GitHub

2. Interactive HTML API Explorer

FAQ

Markdown Slide Deck Samples

PDF Samples

Markdown Samples

Markdown Viewer Samples

Data URI Generator

Accessibility Audit Report Generator

PDF Header/Footer Snippets

PDF Invoice Generator

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3. Client PDF Specification