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Stirling-PDF

Open-source PDF editor with tools for editing, signing, and bulk processing on any infrastructure

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Also known as
stirling-pdf

Available worldwide · Popular in: US

What is Stirling-PDF?

A comprehensive PDF platform offering 60+ tools for editing, signing, redacting, and converting documents. Available as desktop applications, a web interface, or self-hosted server with API access.

Independently observed

Stirling-PDF pricing

Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.

Pricing as of verify at live pricing ↗Independently observed
from $99/moHybridFree tier

Free for individuals. Team plan from $99/month for 100 users. Enterprise with custom pricing.

Free

Free
Free

Open-source PDF editor for individuals

credits
1,000/month
  • 60+ PDF tools
  • Web, desktop, and self-hosted options
  • Private and open-source
  • 1,000 monthly credits for automation

Team

$99/month for 100 users
min 100 seats

For team administration and infrastructure

users
100
  • Everything in Free
  • Single sign-on (SSO)
  • Team workspace and invites
  • Add capacity in blocks of 100 users
  • One bill instead of per-seat licenses
  • Central control of tool catalog and deployment

Enterprise

Contact sales
Contact sales

For regulated and air-gapped deployments

  • Everything in Team
  • Air-gapped and self-hosted deployment
  • SCIM provisioning
  • Data residency and audit logs
  • Uptime SLAs
  • Custom agreement and invoicing

Add-ons

  • PDF Processor Credits$0.01 per credit

What Stirling-PDF does

The capabilities that matter for pdf editors, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.

Capabilities
Deployment model
Cloud saas
Base text and image editing within PDF
✓
Page merging extraction and splitting
✓
OCR optical character recognition scanning
✓
Permanent blackout redaction engine
✓
Password protection and encryption
-
Interactive form field creation
✓
Digital signature certification enforcement
✓
Microsoft office docx xlsx conversion
✓
File size compression engine
✓
SOC2 type ii
-
ISO 27001
-
Pricing model
Freemium
Independently observed

Platform & deployment

Independently observed
Platforms
  • CLI
  • macOS
  • Web
  • Linux
  • Windows
Deployment
  • Cloud / SaaS
  • Air-gapped
  • Self-hosted

Integrations (4)

Independently observed
collaboration
  • SharePoint→•
storage
  • S3←•
file_transfer
  • FTP←•
authentication
  • OAuth⇄•

Security & compliance

Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality

Stirling-PDF FAQ

Common questions about Stirling-PDF, answered from independent, dated evidence.

What is Stirling-PDF?

A versatile PDF platform offering editing, signing, redaction, and conversion capabilities. Can run as a standalone desktop application, in a web browser, or deployed on private servers, with REST APIs for integration and workflow automation. It is indexed under PDF Editors.

Source: https://stirlingpdf.com/pricing

Is Stirling-PDF free to use?

Stirling-PDF is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.

Source: https://stirlingpdf.com/pricing

What platforms does Stirling-PDF support?

Stirling-PDF supports the web, Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.

Source: https://stirlingpdf.com/pricing

Can Stirling-PDF be self-hosted?

Yes. Stirling-PDF can be deployed hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.

Source: https://stirlingpdf.com/pricing

Stirling-PDF alternatives

Other pdf editors we track, ranked by the same independent score.

All Stirling-PDF alternatives, ranked →

Compare Stirling-PDF

Side by side against other pdf editors, attribute by attribute, with a source on every value.

Independent · unbought · dated

The vioscaleAI score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Stirling-PDF, not the verdict.

Balanced composite 59 / 100
medium · 67%
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Capabilities920.098.5✓
Pricing transparency1000.088.4✓
Development activity630.095.9✓
Release cadence970.055.0✓
Stars940.032.4✓
Integrations200.091.9✓
Price level250.051.3✓
Reliability00.060.0-
Dependent projects00.060.0✓
Security posture00.060.0-
Package downloads00.140.0-
Security score00.040.0-
Developer Q&A activity00.060.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Activity

AttributeValueEvidence
Commits last 30d100mediumsource · 2026-10-15 · 65%

Adoption

AttributeValueEvidence
Github stars94,282highsource · 2026-10-15 · 90%
Dependent repos0highsource · 2026-10-15 · 85%

Content

AttributeValueEvidence
Faq4 itemsmediumsource · 2026-09-10 · 60%

Features

AttributeValueEvidence
CapabilitiesPricing model: freemium · Deployment model: cloud_saas · File size compression engine: Yes · Interactive form field creation: Yes · Permanent blackout redaction engine: Yes · Microsoft office docx xlsx conversion: Yesmediumsource · 2026-10-15 · 60%

Integrations

AttributeValueEvidence
Count4mediumsource · 2026-10-15 · 60%

Language

AttributeValueEvidence
PrimaryTypeScripthighsource · 2026-10-15 · 90%

Market

AttributeValueEvidence
AvailabilityPrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: …mediumsource · 2026-10-15 · 50%

Pricing

AttributeValueEvidence
Free tierYesmediumsource · 2026-10-15 · 60%
Modelfreemiummediumsource · 2026-10-15 · 60%
Price levelhighmediumsource · 2026-10-15 · 60%
Starting priceAmount: 99 · Currency: USDmediumsource · 2026-10-15 · 60%
TransparentYesmediumsource · 2026-10-15 · 60%

Release

AttributeValueEvidence
Cadence days6mediumsource · 2026-10-15 · 70%
History20 itemsmediumsource · 2026-10-15 · 70%

Security

AttributeValueEvidence
VulnerabilitiesCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=nixpkgs&package_name=stirling-pdf&per_page=100 · Last 12m: 0highsource · 2026-10-15 · 90%
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