Assembly Line

Core

A modern PDF library for TypeScript. Parse, modify, and generate PDFs with a clean, intuitive API.

Core is an open-source document signing library project on GitHub under the MIT license (permissive), with 1.8k stars. It is built with TypeScript. Its last push was 7 days ago.

Stars
1.8k
License
MIT
Activity
Active
Latest release
v0.5.3

Code on GitHub Website

Judgement

What it is
Building block
What it does
A TypeScript library for parsing, modifying and generating PDFs, including PAdES digital signatures.
Adopt it when
You need PDF manipulation and signing in TypeScript beyond what pdf-lib offers.
Watch out
Labelled beta at version 0.5 and under a year old; APIs may change, though Documenso uses it.
Ready for
Experimental
Runs as
Library
Built with
TypeScript
How established
Young: started 9 months ago, latest release v0.5.3.
What the license allows
You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Core → TypeScript → Go → runs on a microchip

How compilers were built, back to punched paper tape

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Stars, license and activity come from GitHub and refresh on a rolling hourly schedule. The project's own description is quoted as written.