How PPT Master Guarantees Data Privacy with 100% Local Processing

PPT Master ensures complete data privacy by executing every processing stage—from document ingestion to final PPTX export—exclusively on your local machine, ensuring that no user content ever leaves your filesystem.

PPT Master, developed in the hugohe3/ppt-master repository, implements a deliberately offline architecture that addresses critical enterprise privacy concerns. Unlike cloud-based presentation tools that require uploading sensitive documents to remote servers, how PPT Master guarantees data privacy with its 100% local processing approach lies in its pure-Python pipeline that transforms source materials into polished decks without network transmission.

Why PPT Master Keeps Every Byte Local

Local Document Conversion

When you import source materials, PPT Master processes them using local Python scripts that never initiate outbound connections. The conversion modules pdf_to_md.py, doc_to_md.py, and web_to_md.py—located under skills/ppt-master/scripts/—leverage local libraries such as pdfminer, python-docx, and curl_cffi to parse content directly from your disk.

According to the documentation in skills/ppt-master/scripts/docs/conversion.md#L18, these scripts handle "privacy-sensitive documents that should stay local" by performing all transformations on your filesystem. Whether converting PDFs, Word documents, or web pages, the raw content remains on your machine throughout the extraction process.

On-Disk SVG Generation

After content extraction, PPT Master generates scalable vector graphics using locally executed scripts. AI-generated SVG markup is written directly to the project's svg_output/ folder, where it resides as standard files on your storage device. As documented in skills/ppt-master/references/svg-image-embedding.md#L90, these SVG files are subsequently translated into PowerPoint DrawingML markup by local converters without contacting external servers for rendering or storage.

Offline PPTX Assembly

The final presentation assembly occurs entirely offline. The svg_to_pptx.py script packages the locally-generated DrawingML XML and media assets into a standard .pptx archive on disk. This process, referenced in the project documentation at skills/ppt-master/scripts/docs/total_md_split.md, requires no network connectivity and creates the final output file in your specified project directory.

Architectural Guarantees of the Local-Only Pipeline

Pure-Python Processing Chain

All heavy-lifting operations live under skills/ppt-master/scripts/ and execute as standard Python processes. The pipeline reads files, writes intermediate Markdown and SVG formats, and produces the final PPTX using only local computational resources. No HTTP client libraries are invoked during the core document transformation steps, ensuring that proprietary data never traverses network interfaces.

No Hidden Telemetry or Analytics

The repository contains no background daemons, analytics libraries, or telemetry collectors. The SECURITY.md file explicitly confirms that the only external network traffic generated by the workflow is the request you voluntarily make to your chosen AI editor (such as Claude or GPT) to obtain generation prompts. PPT Master itself never contacts third-party analytics services or vendor servers.

Environment-Controlled Image Generation

Even optional image generation capabilities respect the local-only model. The image_gen.py utility relies on API keys stored in a local .env file within your project directory. These credentials are used solely for direct communication with your chosen image provider; the keys and generated assets are never transmitted to PPT Master servers or infrastructure.

Running the Pipeline: A Complete Local Workflow

Execute the following commands to process documents while maintaining complete data isolation:

# 1️⃣ Install the runtime (Python 3.10+) and dependencies

pip install -r requirements.txt

# 2️⃣ Initialise a new project (all files are created under ./projects)

python3 skills/ppt-master/scripts/project_manager.py init my_deck --format ppt169

# 3️⃣ Import source material – the PDF stays on disk and is converted locally

python3 skills/ppt-master/scripts/project_manager.py import-sources \
    projects/my_deck projects/my_deck/sources/report.pdf --move

# 4️⃣ Validate the project (checks file presence, no network calls)

python3 skills/ppt-master/scripts/project_manager.py validate projects/my_deck

# 5️⃣ Run the full pipeline – every step runs locally

python3 skills/ppt-master/scripts/total_md_split.py projects/my_deck
python3 skills/ppt-master/scripts/finalize_svg.py projects/my_deck
python3 skills/ppt-master/scripts/svg_to_pptx.py projects/my_deck -s final

All generated artifacts—including exports/*.pptx and svg_output/*.svg—reside exclusively in your local project directory. The README.md#L50 reinforces this guarantee by stating that "Data stays local … your files shouldn’t have to be uploaded to someone else’s server," while docs/why-ppt-master.md#L44-L48 declares the project's "Data privacy — 100% local" commitment.

Summary

• Zero external data transmission: Every processing stage—from pdf_to_md.py ingestion to svg_to_pptx.py export—executes locally using pure-Python scripts.
• Local library dependencies: Document parsing relies on local packages (pdfminer, python-docx, curl_cffi) rather than cloud APIs.
• Explicit privacy architecture: Source files in skills/ppt-master/scripts/source_to_md/web_to_md.py and related modules contain no network upload functionality.
• User-controlled AI interactions: The only external connections are direct requests to your chosen AI model for prompts; PPT Master infrastructure never handles your content.

Frequently Asked Questions

Does PPT Master upload my documents to any cloud service?

No. PPT Master never uploads your documents to remote servers. The conversion scripts in skills/ppt-master/scripts/ process PDFs, Word files, and URLs using local libraries only. As stated in docs/why-ppt-master.md#L44-L48, the tool maintains a strict "100% local" processing model where your files remain on your filesystem throughout the entire pipeline.

How does PPT Master handle web URLs without compromising privacy?

When processing web sources, skills/ppt-master/scripts/source_to_md/web_to_md.py uses curl_cffi to download content directly to your local machine. If that fails, it falls back to a local Node.js helper that still executes on your computer. The web content is treated as temporary local data and is never forwarded to external analytics or storage services.

What external connections does PPT Master actually make?

The only external network traffic occurs when you voluntarily request prompts from your chosen AI editor (such as Claude, GPT, or similar models). PPT Master itself never initiates connections to third-party services, telemetry endpoints, or vendor infrastructure. The SECURITY.md explicitly documents this minimal network footprint.

Where are my generated PowerPoint files stored?

All output files are written to subdirectories within your local project folder. The svg_to_pptx.py script creates the final .pptx file in projects/[your_project]/exports/, while intermediate SVG files reside in svg_output/. These locations are on your local disk, ensuring that completed presentations never pass through internet-connected servers.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}