# Adobe CEP (Common Extensibility Platform)

Tools and documentation for building Creative Cloud app extensions with CEP

Repository: https://github.com/Adobe-CEP/CEP-Resources
Canonical: https://ross.abutalabs.com/products/adobe-common-extensibility-platform-cep
Homepage: https://www.adobe.io/apis/creativecloud/cep.html
Language: JavaScript
License Family: other
Topics: adobe, creativecloud, javascript, extensions, panels
Last push: 2026-02-20T20:59:34+00:00

## Health v2 (maintenance only)
Score: 53/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 68, release rhythm 8, longevity 100
- inputs: {"age_days": 4502, "days_push": 194, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1835, forks 841 (observed 2026-08-28T04:05:42.585773+00:00)

## What it is
Adobe's Common Extensibility Platform (CEP) resources: SDK, JavaScript libraries, documentation, and sample code for building HTML5/JavaScript extensions (panels) for Creative Cloud applications like Photoshop, Illustrator, and Premiere Pro. Includes the ZXP packaging/signing tool needed to distribute extensions.

## Use cases
- build a custom panel for photoshop
- create an extension for premiere pro
- package a zxp file for adobe exchange
- communicate between a cep panel and the host app via csinterface
- learn how to develop creative cloud add-ons
- sign and package an adobe extension for distribution

## When to choose
- you want to add custom UI panels to Adobe Creative Cloud apps using HTML/JavaScript
- you need official CEP libraries, cookbook docs, or sample extensions
- you plan to distribute extensions via Adobe Exchange or the Creative Cloud marketplace

## When to avoid
- you want to build extensions for non-Adobe applications
- you need UXP-based modern extension development for newer Adobe apps
- you want a runtime-independent plugin system outside the Adobe ecosystem

## Facets
- artifact type: framework
- maturity: active
- function: sdk, plugin-system, developer-tools, gui
- domain: developer-tools, cross-platform, desktop-applications
- platform: cross-platform
- tags: adobe, creative-cloud, cep, extensions, panels, zxp, html5, desktop, javascript, nodejs

## Member repositories
- Adobe-CEP/CEP-Resources (docs) score 53
- Adobe-CEP/Samples (examples) score 65

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:42.585773+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:18:29.445269+00:00, confidence not recorded.
  - readme: https://github.com/Adobe-CEP/CEP-Resources (fetched 2026-08-28T04:05:42.585773+00:00, sha c34013668e3f)
- Data as of 2026-08-30T08:39:29.467469+00:00.