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Editorial Team
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Asked: 2026-05-27T05:55:59+00:00

Is there a native library to digitally sign a PDF document?

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Is there a native library to digitally sign a PDF document?

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  1. Editorial Team

    The package here seems to provide an extension for signing PDFs with Ruby. It isn’t free, but it looks like it provides a native ruby interface.

    Here’s how to use if in ruby (after it’s been installed):

    require 'mypdfsigner'
include MyPDFSigner

inputPath = "/tmp/input.pdf"
outputPath = "/tmp/output.pdf"
location = "Chicago"
reason = "Demo"
contactInfo = "+1 555-555-5555"
certify = false   # not supported yet
visible = true
title = "Signing with MyPDFSigner"
author = "KryptoKoder"
subject = "Ruby Extension"
keywords = "PKCS#12, MyPDFSigner, PDF"
confFile = ""   # defaults to /usr/local/mypdfsigner/mypdfsigner.conf if empty
timestamp = true

puts mypdfsigner_sign(inputPath, outputPath, location, reason, contactInfo, certify, visible, title, author, subject, keywords, confFile, timestamp)

    There’s also a command line interface, so you can script it if needed, as well as a desktop app.

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