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Convert VISIO to PDF - Diagram Converter API

PDF4me Convert VISIO is a comprehensive solution that transforms VISIO documents into various formats through robust API integration. Our processing engine supports VISIO file formats with rendering capabilities including page dimensions, image quality controls, font management, and formatting options. The API efficiently processes VISIO files and conversion parameters through REST API calls, utilizing rendering technology to preserve document integrity and visual fidelity. With support for multi-page documents, hidden page processing, custom page sizing, image enhancement, and PDF compliance standards, this solution is ideal for technical documentation systems, business process automation, architectural design workflows, engineering documentation, and enterprise document conversion processes that demand reliable, scalable VISIO transformation with professional-grade output quality.

Authenticating Your API Request​

To access the PDF4me REST API, every request must include proper authentication credentials. Authentication ensures secure communication and validates your identity as an authorized user of the REST API.

Get your api Key

Key Features​

  • Format Support: Native support for VISIO file formats with conversion capabilities
  • Rendering Engine: Document conversion with customizable resolution, scaling algorithms, and processing techniques
  • Page Management: Process multi-page documents with page conversion, hidden page inclusion, and page dimension controls
  • Image Processing: Image enhancement with adjustable brightness, contrast, color space conversion, and compression quality optimization
  • PDF Standards: Generate compliant documents for archival, compliance requirements, and document management systems
  • Typography Control: Maintain document integrity with font mapping, text rendering optimization, and consistent typography across converted documents

REST API Endpoint​

The PDF4me REST API uses standard HTTP methods to interact with resources. All VISIO conversion operations are performed through a single endpoint:

  • Method: POST
  • Endpoint: /api/v2/ConvertVisio?schemaVal=PDF

Supported File Formats​

Input Formats​

  • VSD - VISIO 2003-2010 binary format with document structure preservation
  • VSDX - VISIO 2013+ XML format with enhanced compatibility and smaller file sizes
  • VSDM - VISIO macro-enabled XML format supporting complex documents with embedded macros
  • VSTX - VISIO template files for consistent document styling and formatting
  • VST - Legacy VISIO template format for backward compatibility

Output Formats​

  • PDF - Portable Document Format with vector graphics preservation
  • PDF/A-1b - Archival PDF format ensuring long-term document preservation and accessibility compliance
  • PNG - Raster image format for web display and digital presentations
  • JPEG - Compressed image format for efficient storage and sharing
  • SVG - Scalable vector graphics for web applications and responsive design
  • TIFF - High-resolution raster format for professional printing and archival purposes

REST API Parameters​

Complete list of parameters for the Convert VISIO REST API. Parameters are organized by category for better understanding and implementation.

Important: Parameters marked with an asterisk (*) are required and must be provided for the API to function correctly.

Required Parameters​

ParameterTypeDescriptionExample
File Name*StringName of the file. The source VISIO document filename with proper extension for conversion operations. This parameter identifies the input document for VISIO processing, format conversion, and output generation workflows. Required for document identification and processing pipeline management in VISIO conversion operations.output
File content*Base64Content of the input file. The complete content of the VISIO document encoded in Base64 format for conversion operations. This parameter contains the entire file data required for document analysis, format conversion, and output generation workflows. Essential for secure document processing and API-based VISIO conversion operations.JVBERi...
Output Format*StringTarget conversion format for the VISIO document. This parameter specifies the desired output format for the conversion process. Required for format specification and output generation in VISIO conversion operations.string

Page Control Parameters​

ParameterTypeDescriptionExample
Page Index*IntegerPage index for VISIO document processing. This parameter specifies the page number for conversion operations. Required for page-specific processing and multi-page document handling in VISIO conversion workflows.3
Page Count*IntegerTotal number of pages to process in the VISIO document. This parameter determines the page count for conversion operations. Required for multi-page document processing and batch conversion workflows in VISIO operations.10
Include Hidden Pages*BooleanInclude hidden pages in VISIO document processing. This parameter controls whether hidden pages are included in the conversion process. Required for complete document processing and comprehensive VISIO conversion workflows.true
Page Size*StringPage size specification for VISIO document output. This parameter defines the output page dimensions for the converted document. Required for page formatting and output specification in VISIO conversion operations.string

Font and Text Parameters​

ParameterTypeDescriptionExample
Default Font*StringDefault font specification for VISIO document processing. This parameter defines the font to be used when original fonts are not available. Required for typography consistency and text rendering in VISIO conversion operations.string

Image Quality Parameters​

ParameterTypeDescriptionExample
Jpeg Quality*IntegerJPEG quality setting for VISIO document processing. This parameter controls the compression quality for JPEG output formats. Required for image quality optimization and output formatting in VISIO conversion operations.2
Image Brightness*FloatImage brightness adjustment for VISIO document processing. This parameter controls the brightness level of the output images. Required for image enhancement and visual quality optimization in VISIO conversion workflows.3.14
Image Contrast*FloatImage contrast adjustment for VISIO document processing. This parameter controls the contrast level of the output images. Required for image enhancement and visual quality optimization in VISIO conversion workflows.3.14
Image Color Mode*StringColor mode specification for VISIO document processing. This parameter defines the color space for the output images. Required for color management and output formatting in VISIO conversion operations.string

Advanced Rendering Parameters​

ParameterTypeDescriptionExample
Compositing Quality*StringCompositing quality setting for VISIO document processing. This parameter controls the quality of image composition and blending. Required for visual quality optimization and rendering enhancement in VISIO conversion operations.string
Interpolation Mode*StringInterpolation mode for VISIO document processing. This parameter defines the interpolation method for image scaling and resizing. Required for image processing and quality optimization in VISIO conversion workflows.string
Pixel Off set Mode*StringPixel offset mode for VISIO document processing. This parameter controls pixel alignment and positioning. Required for precise rendering and image quality optimization in VISIO conversion operations.string
Smoothing Mode*StringSmoothing mode for VISIO document processing. This parameter controls anti-aliasing and smoothing techniques. Required for visual quality enhancement and rendering optimization in VISIO conversion workflows.string
Resolution*FloatResolution setting for VISIO document processing. This parameter defines the output resolution for the converted document. Required for image quality specification and output formatting in VISIO conversion operations.3.14
Scale*FloatScaling factor for VISIO document processing. This parameter controls the size scaling of the output document. Required for size adjustment and output formatting in VISIO conversion workflows.3.14

PDF Compliance Parameters​

ParameterTypeDescriptionExample
Is Pdf Compliant*BooleanPDF compliance setting for VISIO document processing. This parameter controls whether the output PDF meets compliance standards. Required for document standards and output formatting in VISIO conversion operations.true

Layout and Display Parameters​

ParameterTypeDescriptionExample
Save Foreground Page*BooleanSave foreground page setting for VISIO document processing. This parameter controls whether to save the foreground page in the output. Required for page layout control and output formatting in VISIO conversion operations.true
Save Tool Bar*BooleanSave toolbar setting for VISIO document processing. This parameter controls whether to include toolbar elements in the output. Required for interface preservation and output formatting in VISIO conversion workflows.true
AutoFit*BooleanAuto-fit setting for VISIO document processing. This parameter controls automatic fitting of content to page size. Required for layout optimization and output formatting in VISIO conversion operations.true

Compression Parameters​

ParameterTypeDescriptionExample
Tiff Compression*StringTIFF compression setting for VISIO document processing. This parameter controls the compression method for TIFF output formats. Required for file size optimization and output formatting in VISIO conversion operations.string

Output​

The PDF4me Convert VISIO REST API returns a response that can be viewed in multiple formats. Choose the view that best fits your needs:

JSON Response Format

The raw JSON response from the API:

{
  "File Content": "Output file content from the PDF4me Connect"
}

Request Example​

Content-Type: application/json
Authorization:  YOUR_API_KEY

Note: Get your API key from the PDF4me Dashboard

Payload​

{
  "docContent": "",
  "docName": "output",
  "OutputFormat": "string",
  "PageIndex": 3,
  "PageCount": 10,
  "DefaultFont": "string",
  "IncludeHiddenPages": true,
  "PageSize": "string",
  "JpegQuality": 2,
  "SaveForegroundPage": true,
  "IsPdfCompliant": true,
  "ImageBrightness": 3.14,
  "ImageContrast": 3.14,
  "ImageColorMode": "string",
  "CompositingQuality": "string",
  "InterpolationMode": "string",
  "PixelOffsetMode": "string",
  "Resolution": 3.14,
  "Scale": 3.14,
  "SmoothingMode": "string",
  "TiffCompression": "string",
  "SaveToolBar": true,
  "AutoFit": true
}

Code Samples​

The PDF4me Convert VISIO REST API provides code samples in multiple programming languages. Choose the language that best fits your development environment:

C# (CSharp) Sample

Complete C# implementation for converting VISIO documents:

Industry Use Cases & Applications​

Technical Documentation Use Cases

  • System Architecture: Convert complex VISIO system diagrams and network topologies for technical documentation
  • Process Flows: Transform VISIO business process diagrams and workflow charts for comprehensive documentation
  • Database Schemas: Convert VISIO database relationship diagrams and data models
  • API Documentation: Transform VISIO integration flow diagrams and system maps for developer documentation

Get Help​

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