StirlingPDFstartedasa24-hourexperimentoveraweekend.Oneengineer,fourfeatures,postedtoReddit.Todayithasgrowntoover30milliondownloadsandrunsinside55,000companiesaroundtheworld.
Ourmissionistobuildtheworld'smostwidelyusedPDFplatform.Westartedbybuildingfoundationalcomponentslikeeditors,processors,andservers.
NowwearebuildingthenextgenerationofPDFproducts.PipelinesthateditPDFsforyou.PoliciesthatgovernyourPDFsattheirsource.Recordsthatspeaktoyourothertools.Yourinfrastructure,yourdocuments,yourrules.
StirlingPDFstartedasa24-hourexperimentoveraweekend.Oneengineer,fourfeatures,postedtoReddit.Todayithasgrowntoover30milliondownloadsandrunsinside55,000companiesaroundtheworld.
Ourmissionistobuildtheworld'smostwidelyusedPDFplatform.Westartedbybuildingfoundationalcomponentslikeeditors,processors,andservers.
NowwearebuildingthenextgenerationofPDFproducts.PipelinesthateditPDFsforyou.PoliciesthatgovernyourPDFsattheirsource.Recordsthatspeaktoyourothertools.Yourinfrastructure,yourdocuments,yourrules.

Our values

Four commitments the product lives by

Open by default

The source is public. You can read it, build it, and run it without asking us for anything.

Open by default

The source is public. You can read it, build it, and run it without asking us for anything.

Your files stay yours

Run it in the browser, on the desktop, or on your own servers. Nothing has to leave your infrastructure.

Your files stay yours

Run it in the browser, on the desktop, or on your own servers. Nothing has to leave your infrastructure.

Free is not a trial

The editor is free forever. You pay when you want a team on it.

Free is not a trial

The editor is free forever. You pay when you want a team on it.

Every run leaves a record

Whatever the Processor does to a document is recorded, file kept or not.

Every run leaves a record

Whatever the Processor does to a document is recorded, file kept or not.

By the numbers.
The data behind the work.

2010

2010

Founded

$1M

$1M

Raised

21M

21M

Downloads

1

1

Employees

By the numbers.
The data behind the work.

2010

2010

Founded

$1M

$1M

Raised

21M

21M

Downloads

1

1

Employees

From the blog

Product releases, open source, and how the company is being built.

Image

Introducing Stirling V2

Product Release

Sep 25, 2025

Image

On joining Stirling PDF as CEO

Executive Hire

Mar 1, 2025

Image

PDF Redaction is now open source

Product Release

Jan 13, 2025

Join our team

We work in small teams, value autonomy, and care deeply about craft and fundamentals.

Open positions

Join our team

We work in small teams, value autonomy, and care deeply about craft and fundamentals.

Open positions

Join our team

We work in small teams, value autonomy, and care deeply about craft and fundamentals.

Open positions