RunConvert

VSSM to PDF Converter

Convert VSSM to PDF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is a VSSM file?

The VSSM extension denotes a Microsoft Visio Macro-Enabled Stencil file, introduced with Visio 2013 to store reusable master shapes alongside embedded Visual Basic for Applications (VBA) code. Adhering to the Open Packaging Conventions (OPC), it functions as a ZIP container holding XML data structures for shape geometries and binary parts for compiled macros. Security policies often flag this format due to the potential execution of arbitrary code via the embedded VBA scripts.

How to open a VSSM file

Opening VSSM files requires Microsoft Visio Pro or Standard editions with macro security settings adjusted to permit VBA execution. While LibreOffice Draw can parse the vector shape data within the stencil using reverse-engineered libraries, it cannot execute or edit the proprietary VBA macros contained within the binary sub-parts of the archive.

VSSM Technical Info

Full Name
Visio Macro-Enabled Stencil
Developed By
Microsoft
Initial Release
2013
MIME Type
application/vnd.ms-visio.stencil.macroEnabled.12+xml

What is a PDF file?

The Portable Document Format (PDF) is a comprehensive file format, standardized as ISO 32000, designed to present documents consistently independent of application software, hardware, and operating systems. It encapsulates a complete description of a fixed-layout 2D document, including text, fonts, vector graphics, and raster images, based on the PostScript language. Advanced implementations support interactive form fields, JavaScript scripting, 3D objects (U3D/PRC), and various encryption standards.

How to open a PDF file

PDF viewing is natively supported by all major modern web browsers (Chrome, Edge, Firefox, Safari) and most operating systems via built-in previewers. For advanced manipulation, form filling, or pre-press validation, dedicated software such as Adobe Acrobat DC, Foxit Reader, or open-source tools like Ghostscript and Poppler is required.

PDF Technical Info

Full Name
Portable Document Format
Developed By
Adobe Inc. / ISO
Initial Release
1993
MIME Type
application/pdf

Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert VSSM to PDF in seconds

Every VSSM to PDF conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert VSSM to PDF via API

Automate VSSM to PDF conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "vssm-to-pdf",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "pdf"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.vssm

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.