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puemos/hls-downloader

This system is a browser extension for downloading and processing media streams, specifically supporting HLS playlists and direct URI inputs. It manages the full lifecycle of media jobs, including fetching, decrypting, and muxing audio and video content using client-side FFmpeg. The architecture is modularized into a background service handling disk-backed processing and a modernized popup interface for user interaction, all managed through a centralized Redux store.

61.7

Adequate · 4 August 2026

32k

lines of production code

TypeScript

with JavaScript

2

bus factor · 13 authors in all

3

measurements over time

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How it got here

2018 · Architecture modernization and modularization

The project underwent a significant architectural overhaul, migrating from a monolithic Webpack and Redux-based structure to a modular, Vite-driven setup using pnpm. This period involved removing legacy components, state management, and build configurations in favor of a modernized, service-oriented architecture supporting Manifest V3.

11 changes

2020–2024 · Core architecture and UI overhaul

This period focused on a comprehensive architectural shift, introducing a Redux-based state management system and a modular core for handling media processing, storage, and download queues. Simultaneously, the project modernized its frontend with a new design system, a complete popup interface rebuild using Tailwind CSS, and support for Manifest V3 and client-side FFmpeg processing.

25 changes

2025–2026 · test coverage and storage management

This period focused on significantly expanding test coverage across core, background, and popup modules, alongside the introduction of new React hooks for managing storage state. The implementation added a storage usage summary and low-storage warning banner, while also introducing disk-backed workers to handle large downloads more efficiently.

8 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 4 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 408b43f7c0 — 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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