API Snap Documents API

openapi: 3.2.0
info:
  title: Snap Browser Documents API
  version: 1.0.0
  description: API Snap is a developer utility API that bundles 13+ common tools into a single REST API with one API key. Generate QR codes, resize images, capture screenshots, convert HTML to PDF, hash strings, generate UUIDs, extract URL metadata, and more. Free tier includes 100 API calls/month with no credit card required. All endpoints support CORS and return JSON (or binary where appropriate). Built for developers who want to ship faster.
  contact:
    name: API Snap Support
    url: https://api-snap.com
  license:
    name: Proprietary
servers:
- url: https://api-snap.com
  description: Production server
security:
- BearerAuth: []
tags:
- name: Documents
  description: Document generation and conversion (PDF, Markdown)
paths:
  /api/pdf:
    post:
      operationId: htmlToPdf
      summary: Convert HTML to PDF
      description: Convert an HTML string to a downloadable PDF file.
      tags:
      - Documents
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - html
              properties:
                html:
                  type: string
                  description: HTML content to convert to PDF.
                title:
                  type: string
                  description: Document title, used as the PDF filename.
                  default: Document
            example:
              html: <h1>Hello World</h1><p>This is my PDF content.</p>
              title: My Document
      responses:
        '200':
          description: PDF file
          content:
            application/pdf:
              schema:
                type: string
                format: binary
          headers:
            Content-Disposition:
              schema:
                type: string
              description: attachment; filename="<title>.pdf"
        '400':
          description: Missing html field
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              examples:
                HtmlToPdf400Example:
                  summary: Default htmlToPdf 400 response
                  x-microcks-default: true
                  value:
                    error: Bad request
                    message: Invalid parameters
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimitExceeded'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
  /api/markdown:
    post:
      operationId: markdownToHtml
      summary: Convert Markdown to HTML
      description: 'Convert a Markdown string to HTML. By default returns a fully styled HTML page; pass `styled: false` to get raw HTML fragment in a JSON response.'
      tags:
      - Documents
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - markdown
              properties:
                markdown:
                  type: string
                  description: Markdown content to convert.
                styled:
                  type: boolean
                  default: true
                  description: If true (default), returns a full HTML page with CSS styling. If false, returns a JSON object with the raw HTML fragment.
            examples:
              styled:
                value:
                  markdown: '# Hello


                    This is **bold** text.'
                  styled: true
              raw:
                value:
                  markdown: '# Hello


                    This is **bold** text.'
                  styled: false
      responses:
        '200':
          description: Converted HTML. Returns a full HTML page when `styled` is true, or a JSON object with `html` key when `styled` is false.
          content:
            text/html:
              schema:
                type: string
            application/json:
              schema:
                type: object
                properties:
                  html:
                    type: string
              examples:
                MarkdownToHtml200Example:
                  summary: Default markdownToHtml 200 response
                  x-microcks-default: true
                  value:
                    html: '<h1>Invoice</h1><p>Total: $100.00</p>'
        '400':
          description: Missing markdown field
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              examples:
                MarkdownToHtml400Example:
                  summary: Default markdownToHtml 400 response
                  x-microcks-default: true
                  value:
                    error: Bad request
                    message: Invalid parameters
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimitExceeded'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  responses:
    RateLimitExceeded:
      description: Monthly API call limit reached
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/RateLimitError'
      headers:
        X-RateLimit-Limit:
          schema:
            type: integer
          description: Monthly call limit
        X-RateLimit-Remaining:
          schema:
            type: integer
          description: Remaining calls this month
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: 'API key required. Pass via Authorization: Bearer <key> header or ?api_key= query param.'
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Human-readable error message
          example: example
      required:
      - error
    RateLimitError:
      type: object
      properties:
        error:
          type: string
          example: Rate limit exceeded
        usage:
          type: integer
          description: Number of API calls used this month
          example: 1
        limit:
          type: integer
          description: Monthly call limit for your plan
          example: 1
        upgrade_url:
          type: string
          format: uri
          description: URL to upgrade your plan
          example: https://example.com
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: 'API key obtained from your API Snap dashboard. Pass as `Authorization: Bearer <key>` header or as `?api_key=<key>` query parameter.'