Introducing the
PDF Processor.

Introducing the
PDF Processor.

The next generation of the PDF Editor.
Private, open-source, and built to scale.

Used by 75% of the Fortune 500

Under 10,000 PDFs

Replace your PDF editor with Stirling

GitHub's #1 open-source PDF application with 29m downloads. Lightning-fast reading, editing, and 60+ more PDF operations.

Under 10,000 PDFs

Replace your PDF editor with Stirling

GitHub's #1 open-source PDF application with 29m downloads. Lightning-fast reading, editing, and 60+ more PDF operations.

From 10,000-1,000,000 PDFs

Classify, protect, and route every PDF automatically

Process thousands of documents at a time through PDF pipelines. Automate security, compliance, and more without having to open files.

From 10,000-1,000,000 PDFs

Classify, protect, and route every PDF automatically

Process thousands of documents at a time through PDF pipelines. Automate security, compliance, and more without having to open files.

Over 1,000,000 PDFs

Standardize PDF processing for people, servers, and AI

Unify standards for every PDF across the entire organization. Designed for regulated, high-security environments.

Over 1,000,000 PDFs

Standardize PDF processing for people, servers, and AI

Unify standards for every PDF across the entire organization. Designed for regulated, high-security environments.

Run Stirling on any infrastructure

From air-gapped bare metal to private cloud VPCs. No upfront commitments, no vendor lock-in.

Deployed in 55K companies

Scarf Analytics, 2026

Military & Defense

Process classified intelligence in air-gapped environments.

Government

Secure citizen data and ensure digital sovereignty for public records.

Healthcare

HIPAA-compliant PDF processing for health systems of all sizes.

Industrials

Protect intellectual property, schematics, and blueprints.

Financial Services

Automate loan processing and KYC with zero data leakage.

Legal Services

Accelerate e-discovery and contract review behind the firewall.

Insurance

Speed up claims adjudication with automated data extraction.

Energy

Manage critical infrastructure docs in remote, offline environments.

Deployed in 55K companies

Scarf Analytics, 2026

Military & Defense

Process classified intelligence in air-gapped environments.

Government

Secure citizen data and ensure digital sovereignty for public records.

Healthcare

HIPAA-compliant PDF processing for health systems of all sizes.

Industrials

Protect intellectual property, schematics, and blueprints.

Financial Services

Automate loan processing and KYC with zero data leakage.

Legal Services

Accelerate e-discovery and contract review behind the firewall.

Insurance

Speed up claims adjudication with automated data extraction.

Energy

Manage critical infrastructure docs in remote, offline environments.

Deployed in 55K companies

Scarf Analytics, 2026

Military & Defense

Process classified intelligence in air-gapped environments.

Government

Secure citizen data and ensure digital sovereignty for public records.

Healthcare

HIPAA-compliant PDF processing for health systems of all sizes.

Industrials

Protect intellectual property, schematics, and blueprints.

Financial Services

Automate loan processing and KYC with zero data leakage.

Legal Services

Accelerate e-discovery and contract review behind the firewall.

Insurance

Speed up claims adjudication with automated data extraction.

Energy

Manage critical infrastructure docs in remote, offline environments.

"This is the one PDF Editor to rule them all! My quest for the perfect PDF editor finally paid off. Meet Stirling PDF, the only PDF editor you will ever need."

Vikash Jhagroe

Sr Technical Adoption Manager at VMware

Process your first PDF.

Process your first PDF.

Process your first PDF.

Process your first PDF.