STW to PDF Converter

Convert STW 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

or drag and drop files here

Maximum file size is 1GB

Like RunConvert? Set us as a preferred source on Google.

Add to Preferred Sources

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.

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.

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.

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 an STW file?

The STW file extension represents a document template created by OpenOffice.org 1.0 and StarOffice, specifically for the Writer word processor. It is based on the legacy OpenOffice.org XML file format, which utilizes a ZIP-compressed container to hold separate XML files for content (content.xml), styles (styles.xml), and metadata (meta.xml). This format served as the structural predecessor to the ISO-standardized OpenDocument Format (ODF) template (.ott) and allows users to generate multiple .sxw documents with consistent formatting and layout settings.

How to open an STW file

STW files are legacy templates and are best accessed using software derived from the original OpenOffice.org code base. Apache OpenOffice and LibreOffice Writer are the primary tools for opening, editing, and converting STW files to modern ODF formats. While Microsoft Word can open them via conversion filters, native formatting fidelity is best preserved using the specific open-source suites mentioned.

STW Technical Info

Full Name: OpenOffice.org 1.0 Text Document Template
Developed By: Sun Microsystems
Initial Release: 2000
MIME Type: application/vnd.sun.xml.writer.template

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

More tools

Related conversions

STW to AZW3

STW to BMP

STW to DOC

STW to DOCX

STW to EPUB

STW to GIF

STW to HTML

STW to JPG

Why RunConvert

The fastest way to convert any file

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

Convert STW to PDF in seconds

Every STW 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 STW to PDF via API

Automate STW 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": "stw-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.stw

# 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.