API Snap Images API

openapi: 3.0.3
info:
  title: API Snap Browser Images 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: Images
  description: QR codes, image resizing, and placeholder image generation
paths:
  /api/qr:
    get:
      operationId: generateQrCode
      summary: Generate QR Code
      description: Generate a QR code image for any text or URL. Returns PNG or SVG.
      tags:
      - Images
      parameters:
      - name: data
        in: query
        description: The text or URL to encode in the QR code. Also accepted as `url`.
        required: true
        schema:
          type: string
        example: https://example.com
      - name: size
        in: query
        description: Width/height of the QR code in pixels (max 1000).
        required: false
        schema:
          type: integer
          default: 300
          maximum: 1000
          minimum: 1
        example: 300
      - name: format
        in: query
        description: Output format.
        required: false
        schema:
          type: string
          enum:
          - png
          - svg
          default: png
        example: png
      - name: dark
        in: query
        description: Hex color for dark (foreground) modules.
        required: false
        schema:
          type: string
          default: '#000000'
        example: '#000000'
      - name: light
        in: query
        description: Hex color for light (background) modules.
        required: false
        schema:
          type: string
          default: '#ffffff'
        example: '#ffffff'
      responses:
        '200':
          description: QR code image
          content:
            image/png:
              schema:
                type: string
                format: binary
            image/svg+xml:
              schema:
                type: string
        '400':
          description: Missing or invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              examples:
                GenerateQrCode400Example:
                  summary: Default generateQrCode 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/resize:
    post:
      operationId: resizeImage
      summary: Resize and Convert Images
      description: Resize and/or convert images to PNG, WebP, JPEG, or AVIF. Accepts multipart form data (with an `image` file field) or a JSON body with a base64-encoded image or image URL.
      tags:
      - Images
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                image:
                  type: string
                  format: binary
                  description: The image file to resize.
                width:
                  type: integer
                  description: Target width in pixels (max 4096).
                  maximum: 4096
                height:
                  type: integer
                  description: Target height in pixels (max 4096).
                  maximum: 4096
                format:
                  type: string
                  enum:
                  - png
                  - jpeg
                  - jpg
                  - webp
                  - avif
                  default: png
                quality:
                  type: integer
                  description: Output quality (1–100). Applies to JPEG, WebP, AVIF.
                  minimum: 1
                  maximum: 100
                  default: 80
                fit:
                  type: string
                  enum:
                  - cover
                  - contain
                  - fill
                  - inside
                  - outside
                  default: cover
                  description: How to fit the image within the target dimensions.
              required:
              - image
            examples:
              ResizeImageRequestExample:
                summary: Default resizeImage request
                x-microcks-default: true
                value:
                  image: iVBORw0KGgoAAAANSUhEUgAA...
                  width: 300
                  height: 200
                  format: png
                  quality: 80
                  fit: cover
          application/json:
            schema:
              type: object
              properties:
                image:
                  type: string
                  description: Base64-encoded image data.
                url:
                  type: string
                  format: uri
                  description: URL of the image to fetch and resize.
                width:
                  type: integer
                  maximum: 4096
                height:
                  type: integer
                  maximum: 4096
                format:
                  type: string
                  enum:
                  - png
                  - jpeg
                  - jpg
                  - webp
                  - avif
                  default: png
                quality:
                  type: integer
                  minimum: 1
                  maximum: 100
                  default: 80
                fit:
                  type: string
                  enum:
                  - cover
                  - contain
                  - fill
                  - inside
                  - outside
                  default: cover
            examples:
              ResizeImageRequestExample:
                summary: Default resizeImage request
                x-microcks-default: true
                value: {}
      responses:
        '200':
          description: Resized image binary
          content:
            image/png:
              schema:
                type: string
                format: binary
            image/jpeg:
              schema:
                type: string
                format: binary
            image/webp:
              schema:
                type: string
                format: binary
            image/avif:
              schema:
                type: string
                format: binary
        '400':
          description: Missing image input or invalid parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
              examples:
                ResizeImage400Example:
                  summary: Default resizeImage 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/placeholder:
    get:
      operationId: generatePlaceholderImage
      summary: Generate Placeholder Image
      description: Generate an SVG placeholder image of any size with customizable background color, text color, and label.
      tags:
      - Images
      parameters:
      - name: w
        in: query
        description: Image width in pixels (1–2000).
        required: false
        schema:
          type: integer
          minimum: 1
          maximum: 2000
          default: 300
        example: 300
      - name: h
        in: query
        description: Image height in pixels (1–2000).
        required: false
        schema:
          type: integer
          minimum: 1
          maximum: 2000
          default: 200
        example: 200
      - name: bg
        in: query
        description: Background color as a hex string without the `#` prefix.
        required: false
        schema:
          type: string
          default: cccccc
        example: cccccc
      - name: fg
        in: query
        description: Text/foreground color as a hex string without the `#` prefix.
        required: false
        schema:
          type: string
          default: '666666'
        example: '666666'
      - name: text
        in: query
        description: Label text to display on the image. Defaults to the dimensions (e.g. `300x200`).
        required: false
        schema:
          type: string
        example: Hello
      responses:
        '200':
          description: SVG placeholder image
          content:
            image/svg+xml:
              schema:
                type: string
          headers:
            Cache-Control:
              schema:
                type: string
              description: public, max-age=31536000, immutable
        '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.'