devtools

Lux: Fast Video Downloader

Download videos easily with Lux, a simple library and CLI tool.
31,668 stars3,308 forksGoGuide quality 8/10Updated 3/29/2026100% free · open source
What it does

Lux is a fast and simple video download library and CLI tool written in Go that allows you to download videos from various sources.

When to use it
  • You need to download a large number of videos from a specific platform
  • You want to automate video downloads as part of a larger workflow
  • You require a lightweight and efficient video download solution
Ready-to-paste prompt
lux youtube https://www.youtube.com/watch?v=dQw4w9WgXcQ -o rickroll.mp4
Heads up: Lux requires Go to be installed on your system, with a minimum version of 1.13, to run the `go get` installation command
Saves to your device
Use with Claude
New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/lux && curl -fsSL https://workflowstacks.com/api/skills/lux/claude-skill -o ~/.claude/skills/lux/SKILL.md
Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)
claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How Lux: Fast Video Downloader works
Codeflow
Free to inspect

Lux: Fast Video Downloader is a medium Go project (~9.6k lines across 123 code files, plus 1 test files). Expect some technical setup — comfortable with a terminal, or ask a developer. Last commit 5 months ago, MIT license, has a test suite.

Size
Medium codebase
~9.6k lines · 123 code files · ~1 h to skim
Setup
Some technical setup
Comfortable with a terminal? 20–40 min. Otherwise ask a dev.
Runs on
Go
No API keys detected
Go 86%JavaScript 14%
Where to start reading
  1. 1
    README.md
    Start here — what it does and how to install it
  2. 2
    main.go
    Where the program starts running
  3. 3
    go.mod
    Dependencies and the commands it exposes
  4. 4
    app/app.go
    Inside app/ — the main logic begins here
What's in each folder
app/Core code — the actual logic2 files
extractors/Folder103 files
utils/Helper scripts7 files
downloader/Folder4 files
parser/Folder2 files
request/Folder2 files
script/Helper scripts2 files
config/Configuration1 files
READMEHas testsDocumentedCI checksMIT licenseUpdated 5 mo ago
Quick Actions
Details
Creator
iawia002
Language
Go
Category
devtools
Published
2/24/2018

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