Stirling PDF

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Self-host PDF processing with a browser interface and API

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SI Score: 80/100
Pricing: Not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

Self-Hosted PDF API pdf-automation

Ask SI about Stirling PDF

Answers use saved listing facts and recorded sources.

What it does

Stirling PDF provides editing, merging, OCR, redaction, conversion, and other PDF operations through desktop and browser interfaces. It also supports self-hosted deployment and REST-based automation.

Automate saves a named sequence of configured PDF tools and runs it on the files in the workspace. Review Automation Results before finishing. Interactive tools such as the text editor, Sign, Annotate and Compare cannot be steps in that sequence. Saved automations stay in the browser, so export their JSON to move them to another computer. Desktop automation needs a Cloud or self-hosted-server sign-in, while Cloud runs consume team credits. The repository uses mixed component licences rather than one licence for every edition.

Strengths

Provides UI pipelines and APIs for repeated PDF jobs.

Best for

Teams building repeatable PDF processing workflows

Sources

GitHub - Stirling-Tools/Stirling-PDF: #1 PDF Application on GitHub that lets you edit PDFs on any device anywhere · GitHub (Oct 26, 2026)
Stirling-PDF LICENSE (Oct 26, 2026)
Automate | Stirling PDF (Oct 26, 2026)

SI Score

80/100

#1 in PDF Tools

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 80

Evidence

The actual automation guide supplies configure/run/result/export steps and meaningful incompatible-tool, storage, sign-in and credit boundaries for repeated PDF jobs.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

github.com/Stirling-Tools/Stirling-PDF
- APIAI reading, not confirmedChecked Oct 26, 2026
  The repository explicitly offers REST APIs for nearly all PDF tools.
- Product usefulness evidenceChecked Oct 26, 2026
raw.githubusercontent.com/Stirling-Tools/Stirling-PDF/refs/heads/main/LICENSE
- Product usefulness evidenceChecked Oct 26, 2026
docs.stirlingpdf.com/Tools/Guides/Automate/
- Product usefulness evidenceChecked Oct 26, 2026

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