Setup & Installation
Or with the ClawHub CLI, for registry-managed skill folders outside a full OpenClaw workspace:
Version History
Fix metadata format for env vars (use object format)
What This Skill Does
Stirling-PDF is a self-hosted platform with 60+ PDF tools accessible via REST API. Handles merge, split, convert, OCR, compress, watermark, redact, sign, and password operations. Files never leave your own infrastructure.
Because it runs on your own server, files are never uploaded to third-party infrastructure the way cloud PDF tools require.
When to use it
- Merging multiple contracts into one PDF before client review
- OCR-ing scanned invoices to make them text-searchable
- Compressing large reports before attaching to email
- Converting Word or Excel files to PDF for distribution
- Redacting sensitive data from documents before sharing externally
Example Workflow
Here's how your AI assistant might use this skill in practice.
User asks: compress this large PDF report before emailing it
- 1Check STIRLING_PDF_URL is set and the instance is reachable
- 2Run compress operation: node pdf.js compress report.pdf -o report-compressed.pdf
- 3Verify the output file exists and is smaller than the original
- 4Return the output file path to the user
report-compressed.pdf ready to attach, with reduced file size
Requirements
Accounts, API keys, or tools you or your AI assistant may need to set up while using this skill.