# facebookarchive/Keyframes

A library for converting Adobe AE shape based animations to a data format and playing it back on Android and iOS devices.

Repository: https://github.com/facebookarchive/Keyframes
Canonical: https://ross.abutalabs.com/products/keyframes
Homepage: https://facebookincubator.github.io/Keyframes/
Language: JavaScript
License: NOASSERTION
License Family: other
Archived: true
Last push: 2019-11-29T23:33:53+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3697, "days_push": 2469, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5286, forks 297 (observed 2026-08-28T04:09:14.238076+00:00)

## What it is
Keyframes is a Facebook library consisting of an ExtendScript tool that extracts vector animation data from Adobe After Effects files into JSON, plus rendering libraries for Android and iOS. It enables high-quality, vector-based animations with a minimal file footprint.

## Use cases
- play after effects animations in an android app
- render vector animations on ios from a json file
- export after effects shape animations to a data format
- add lightweight animated illustrations to a mobile app
- convert ae shape layers to mobile animation assets

## When to choose
- you need vector-based animations exported from After Effects for Android or iOS
- you want minimal file size for complex shape and path animations
- you are maintaining an existing app already built on Keyframes

## When to avoid
- starting a new project - the repo is archived and unmaintained
- you need modern tooling or community support - consider Lottie instead
- you need animations beyond the AE constraints Keyframes imposes

## Facets
- artifact type: library
- maturity: abandoned
- function: animation, serialization, image-processing
- domain: mobile-development, graphics, frontend
- platform: cross-platform
- tags: after-effects, vector-animation, extendscript, facebook-archive, lottie-alternative, android, ios

## Member repositories
- facebookarchive/Keyframes (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:14.238076+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 2026-08-29T17:59:15.624845+00:00, confidence not recorded.
  - readme: https://github.com/facebookarchive/Keyframes (fetched 2026-08-28T04:09:14.238076+00:00, sha 99ce9e50a6f0)
- Data as of 2026-08-30T08:39:29.467469+00:00.