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airbnb/lottie-android

This system is a comprehensive Android library for rendering Lottie animations, featuring both traditional View-based and modern Jetpack Compose integrations. It provides a declarative API for loading, animating, and controlling complex vector animations with support for dynamic properties, network fetching, and performance optimization. The codebase includes a robust test suite and sample applications that demonstrate various usage patterns and edge cases.

50.9

Adequate · 6 August 2026

31k

lines of production code

Java

with Kotlin

1

bus factor · 168 authors in all

3

measurements over time

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How it got here

2016–2017 · Architecture modernization and performance refactoring

This period focused on modernizing the project's build infrastructure and migrating to a modular, Java 17-based Gradle configuration. Internally, the core Lottie library underwent a significant architectural overhaul, introducing new model classes, a keyframe animation system, and a content rendering hierarchy to improve performance and thread safety. These changes were accompanied by comprehensive unit testing and the removal of legacy Android scaffolding.

18 changes

2018–2020 · Compose integration and architecture modernization

This period focused on modernizing the Lottie library's internal architecture by introducing a Moshi-based JSON parser and modularizing the parsing logic. Simultaneously, the project expanded its ecosystem by adding first-class support for Jetpack Compose, including new declarative APIs and a comprehensive sample application to demonstrate these capabilities.

13 changes

2021–2024 · Compose integration and benchmarking

This period focused on introducing a comprehensive Compose-based sample application and issue reproduction tools to demonstrate Lottie's capabilities. The team also established baseline profile support for performance benchmarking and stabilized the Lottie Compose API for broader adoption.

7 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 6 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 05ea92e903 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.
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