> ## Documentation Index > Fetch the complete documentation index at: https://docs.z.ai/llms.txt > Use this file to discover all available pages before exploring further. # Layout Parsing > Use the [GLM-OCR](/guides/vlm/glm-ocr) model to parse the layout of documents and images and extract text content. Support OCR recognition of images and PDF documents, returning detailed layout information and visualization results. ## OpenAPI ````yaml POST /paas/v4/layout_parsing openapi: 3.0.1 info: title: Z.AI API description: Z.AI API available endpoints license: name: Z.AI Developer Agreement and Policy url: https://chat.z.ai/legal-agreement/terms-of-service version: 1.0.0 contact: name: Z.AI Developers url: https://chat.z.ai/legal-agreement/privacy-policy email: user_feedback@z.ai servers: - url: https://api.z.ai/api description: Production server security: - bearerAuth: [] paths: /paas/v4/layout_parsing: post: summary: Layout Parsing description: >- Use the [GLM-OCR](/guides/vlm/glm-ocr) model to parse the layout of documents and images and extract text content. Support OCR recognition of images and PDF documents, returning detailed layout information and visualization results. requestBody: content: application/json: schema: $ref: '#/components/schemas/LayoutParsingRequest' examples: Layout Parsing Example: value: model: glm-ocr file: https://cdn.bigmodel.cn/static/logo/introduction.png required: true responses: '200': description: Business processing successful content: application/json: schema: $ref: '#/components/schemas/LayoutParsingResponse' default: description: Request failed. content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: LayoutParsingRequest: type: object required: - model - file properties: model: type: string description: 'Model code: `glm-ocr`' example: glm-ocr enum: - glm-ocr file: type: string description: >- Image or PDF document to be recognized, supports URL and base64. Supported image formats: PDF, JPG, PNG. Single image ≤10MB, PDF ≤50MB, maximum support 100 pages example: https://cdn.bigmodel.cn/static/logo/introduction.png return_crop_images: type: boolean description: Whether to return screenshot information default: false need_layout_visualization: type: boolean description: Whether to return detailed layout image result information default: false start_page_id: type: integer description: Start page number for parsing when PDF is provided minimum: 1 end_page_id: type: integer description: End page number for parsing when PDF is provided minimum: 1 request_id: type: string description: >- Passed by the user side, needs to be unique; used to distinguish each request, 6–64 characters. If not provided by the user side, the platform will generate one by default. minLength: 6 maxLength: 64 user_id: type: string description: >- Unique ID for the end user, 6–128 characters. Avoid using sensitive information. minLength: 6 maxLength: 128 LayoutParsingResponse: type: object properties: id: type: string description: Task ID example: task_123456789 created: type: integer format: int64 description: Request creation time, Unix timestamp in seconds example: 1727156815 model: type: string description: Model name example: GLM-OCR md_results: type: string description: Recognition result in Markdown format example: |- # Doc title This is the document content... layout_details: type: array description: Detailed layout information items: type: array items: $ref: '#/components/schemas/LayoutDetail' layout_visualization: type: array description: Recognition result image URLs items: type: string data_info: $ref: '#/components/schemas/DataInfo' usage: type: object description: Token usage statistics returned when the model call ends. properties: prompt_tokens: type: number description: Number of tokens in user input completion_tokens: type: number description: Number of output tokens prompt_tokens_details: type: object properties: cached_tokens: type: number description: Number of tokens served from cache total_tokens: type: integer description: Total number of tokens request_id: type: string description: Request ID example: req_123456789 required: - id - created - model Error: required: - code - message type: object description: The request has failed. properties: code: type: integer format: int32 description: Error code. message: type: string description: Error message. LayoutDetail: type: object description: Layout detail element properties: index: type: integer description: Element index example: 1 label: type: string description: >- Element type: image for images, text for text content, formula for inline formulas, table for tables enum: - image - text - formula - table example: text bbox_2d: type: array description: Normalized element coordinates [x1,y1,x2,y2] items: type: number minimum: 0 maximum: 1 minItems: 4 maxItems: 4 example: - 0.1 - 0.1 - 0.5 - 0.3 content: type: string description: Element content (text / image URL / table HTML) example: This is the content of the element height: type: integer description: Page height example: 800 width: type: integer description: Page width example: 600 required: - index - label DataInfo: type: object description: Document basic information properties: num_pages: type: integer description: Total number of document pages example: 5 pages: type: array description: Document page count information items: $ref: '#/components/schemas/PageInfo' required: - num_pages PageInfo: type: object description: Page dimension information properties: width: type: integer description: Page width example: 600 height: type: integer description: Page height example: 800 required: - width - height securitySchemes: bearerAuth: type: http scheme: bearer description: >- Use the following format for authentication: Bearer [](https://z.ai/manage-apikey/apikey-list) ````