Leonard Rosenthol
Chair, Technical Working Group at ISO International Organization for Standardization
Margate City, New Jersey, United States
Summary
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SeniorLeonard Rosenthol is a seasoned PDF architect and senior principal scientist with 24 years of experience shaping document, graphics, compression and security technologies for Adobe and international standards bodies. As Chair of the C2PA Technical Working Group and a long-time ISO project leader for PDF/A, PDF/X and PDF/E, he blends deep protocol and metadata expertise with practical engineering—driving Acrobat/Reader implementations and global standardization. He represents industry perspectives at W3C and ETSI, and convenes XMP work at ISO, reflecting rare influence across both product development and standards governance. Based in Margate City, NJ, he pairs hands-on technical design with policy-level coordination, and his career background shows a persistent focus on making complex document systems interoperable and auditable.
24 years of coding experience
13 years of employment as a software developer
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (200)
threejs10
table-of-contents10
json-schema10
websocket10
commonmark10
eventsource10
adobe10
haskell10
markdown10
ietf10
javascript10
gltf10
jsonpath10
data-model10
3d-models10
Programming languages (17)
Github contributions (5)
c2pa-org/specifications
Nov 2021 - Nov 2022
The public specifications for the C2PA
Contributions:1 release, 3 reviews, 94 commits in 11 months
ietfc2paspecificationsstandards
c2pa-org/c2pa-org.github.io
Jan 2021 - Dec 2022
C2PA Website
Contributions:14 reviews, 89 commits, 63 PRs in 1 year 10 months
c2pa
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