GitHub - AnInsomniacy/motrix-next-extension: Browser extension for Motrix Next — intercept and redirect downloads with smart filtering and real-time control

Browser extension for Rayburst — seamless download interception & delegation.

Important

Rayburst Connect is the new name of the Motrix Next Extension. The rebrand is in transition: the GitHub repository and the browser store listings still carry the Motrix Next name until the move completes, so links on this page open motrix-next-extension. Rayburst Connect pairs with the Rayburst desktop app; the previous store builds pair with Motrix Next 3.9.x. The upcoming Rayburst Connect release adds media discovery and HLS/DASH track selection. Build from source to try the current code; use GitHub Releases once the new build is published.


_{Popup — Live speed & task dashboard}	_{Settings — Connection, behavior, rules, appearance}

_{Motrix Next interface before rebranding. Rayburst Connect uses the new branding.}

Features

Page media discovery — Detect HLS/DASH manifests and audio/video sources without interrupting playback. Inspect and choose native tracks from the player button or the extension's Media tab through Rayburst's media API. See scope and local testing.
Download interception — Automatically captures browser downloads and routes them to Rayburst for multi-threaded acceleration
Smart filtering — Ordered checks for interception settings, extension-owned downloads, URL schemes, site rules, MIME types, file extensions, and minimum file size
Per-site rules — Glob-pattern rules (e.g. *.github.com) to always intercept, always skip, or defer to global settings
Context menu — Right-click any link, image, audio, or video → "Download with Rayburst"
Magnet & torrent — magnet: URIs and .torrent files are automatically captured and routed to aria2
Cookie forwarding — Cookie forwarding is enabled by default for authenticated downloads and uses required cookie and site permissions
Real-time dashboard — Popup shows live download/upload speeds, active/waiting/completed task counts
Auto-launch — Activates Rayburst through its allowlisted Native Messaging host, waits for API readiness, then retries
Duplicate notifications — Alerts when a repeated download request is skipped
Download bar control — Optionally hides Chrome's native download shelf (Chromium 115+, not available on Firefox)
Dark mode — System / Light / Dark with 10 Material You color schemes
i18n — 27 languages including English, Hindi, Chinese, Japanese, Korean, French, German, Spanish, and more
Diagnostics — Privacy-sanitized outcome log with severity filters, configurable bounded history (100 events by default), and one-click export

Installation

From Store

The store links currently provide the Motrix Next Extension for Motrix Next 3.9.x. Rayburst Connect requires the new Rayburst desktop app.

Browser	Link
Chrome	Chrome Web Store
Edge	Edge Add-ons
Firefox	Firefox Add-ons

From GitHub Releases

Once the Rayburst Connect release is published, download rayburst-connect-x.x.x-chromium-mv3.zip or rayburst-connect-x.x.x-firefox-mv3.zip from Releases, unpack it, then load it as described under From Source. Until then, build from source below.

From Source

git clone https://github.com/AnInsomniacy/motrix-next-extension.git
cd motrix-next-extension
pnpm install

# Chrome / Edge
pnpm build

# Firefox
pnpm build:firefox

Then load the unpacked extension:

Chrome / Edge:

Navigate to chrome://extensions (or edge://extensions)
Enable Developer mode
Click Load unpacked
Select the .output/chromium-mv3 directory

Firefox:

Navigate to about:debugging#/runtime/this-firefox
Click Load Temporary Add-on...
Select .output/firefox-mv3/manifest.json

FAQ

What is Rayburst?

Rayburst is a full-featured download manager powered by Aria2 Next, built with Tauri 2, Vue 3, and Rust. This extension bridges your browser to the Rayburst desktop app running on your local machine.

Do I need the desktop app?

Yes. This extension sends downloads to the Rayburst desktop app via its HTTP API on 127.0.0.1:29110. Without the desktop app running, the extension will show a "Disconnected" status and cannot process downloads.

Why does the extension request broad host permissions?

The broad host permissions (*://*/*) are required so cookie forwarding works immediately for authenticated downloads from any site. The chrome.cookies.getAll() and webRequest APIs require matching host permissions for the target domain, and browser downloads can originate from any domain. The same access lets the extension preserve filtered request context and, on Firefox, identify attachment and binary responses before the native save dialog opens. Cookies and filtered request metadata are sent only to the Rayburst API on 127.0.0.1. Users can disable cookie forwarding and request header forwarding in Settings.

Does this extension collect any data?

No personal data is sent to the developer or third parties. Settings, diagnostics and discovered media context are stored locally. All communication occurs exclusively between your browser and the Rayburst app on your local machine (127.0.0.1). No analytics, no telemetry, no external requests. See the full Privacy Policy.

Development

Prerequisites

Node.js 24.16.0 LTS
pnpm 10.34.1
Rayburst desktop app running

Setup

# Install dependencies
pnpm install

# Start the development server with hot reload
pnpm dev

# WXT launches Chrome with the extension in a persistent development profile.

# Build for production
pnpm build

# Package as .zip for store submission
pnpm zip

Project Structure

rayburst-connect/
├── entrypoints/                # Extension entry points
│   ├── background.ts           #   Service worker — orchestrator wiring, listeners
│   ├── content.ts              #   Protocol links, media discovery and player controls
│   ├── media/App.vue           #   In-page media selection panel
│   ├── popup/App.vue           #   Browser action popup — status, speed, task dashboard
│   └── options/App.vue         #   Full-page settings — one staged-snapshot state model
├── lib/                        # Core logic
│   ├── schema.ts               #   Zod schemas — single source of types + defaults
│   ├── storage.ts              #   Schema-validated browser.storage access
│   ├── api.ts                  #   Desktop HTTP API client + error taxonomy
│   ├── desktop.ts              #   Native Messaging activation + readiness coordination
│   ├── browser.ts              #   Permissions, context menu, webRequest helpers
│   ├── backup.ts               #   Settings backup import/export
│   ├── diagnostics.ts          #   Sanitized, serialized diagnostic journal
│   ├── download/               #   Orchestrator, filter pipeline, request context
│   └── media/                  #   Discovery, source catalogue, inspection and submission
├── shared/                     # Shared UI infrastructure
│   ├── i18n/                   #   Runtime i18n engine + virtual:locales loader
│   └── theme.ts                #   M3 color system — bootstrap, CSS vars, Naive UI
├── __tests__/                  # Behavior-level unit + integration tests
├── public/_locales/            # Chrome i18n message bundles (27 languages, SSOT)
└── .github/workflows/ci.yml   # CI: compile → test → lint → i18n → format → build

Scripts

Command	Description
`pnpm dev`	Build the Chrome development extension with hot reload
`pnpm dev:firefox`	Build the Firefox development extension with hot reload
`pnpm build`	Production build → `.output/chromium-mv3/`
`pnpm build:firefox`	Production build → `.output/firefox-mv3/`
`pnpm zip`	Package Chromium build as `.zip` for store submission
`pnpm zip:firefox`	Package Firefox build as `.zip` for AMO submission
`pnpm zip:all`	Package both Chrome and Firefox builds
`pnpm test`	Run all unit and integration tests
`pnpm test:watch`	Run tests in watch mode
`pnpm compile`	TypeScript type checking (`vue-tsc --noEmit`)
`pnpm lint`	ESLint (flat config, Vue 3 + TypeScript)
`pnpm lint:i18n`	Validate i18n key consistency across all locales
`pnpm format`	Auto-format all files with Prettier
`pnpm format:check`	Verify formatting without writing

Testing

Tests run on Vitest with WXT’s fakeBrowser polyfill for extension APIs. Run the full suite before committing:

pnpm format:check && pnpm lint && pnpm compile && pnpm test && pnpm build

Test Site

A self-contained static page for manually verifying download interception:

npx serve test-site -p 3001

Covers: Apple IPSW direct links, .torrent files, magnet: URIs, Linux ISOs, speed test binaries, and edge cases (blob:, data:).

Contributing

PRs and issues are welcome! Before submitting:

Fork the repository
Create a feature branch (git checkout -b feature/amazing-feature)
Ensure all quality gates pass (pnpm format:check && pnpm lint && pnpm compile && pnpm test)
Commit your changes (git commit -m 'feat: add amazing feature')
Push to the branch (git push origin feature/amazing-feature)
Open a Pull Request

Sponsor

Downloads go faster. Thesis progress does not. If you'd like to help with at least one of those —

Consider sponsoring the project ❤️ — your support keeps the code open, the releases shipping, and proof that a PhD can ship more than just papers.

Name		Name	Last commit message	Last commit date
.github		.github
.vscode		.vscode
__tests__		__tests__
assets/styles		assets/styles
docs		docs
entrypoints		entrypoints
lib		lib
public		public
scripts		scripts
shared		shared
test-site		test-site
.gitignore		.gitignore
.nvmrc		.nvmrc
.prettierrc		.prettierrc
AGENTS.md		AGENTS.md
LICENSE		LICENSE
PRIVACY_POLICY.md		PRIVACY_POLICY.md
README.md		README.md
browser-identity.json		browser-identity.json
eslint.config.js		eslint.config.js
package.json		package.json
pnpm-lock.yaml		pnpm-lock.yaml
pnpm-workspace.yaml		pnpm-workspace.yaml
tsconfig.json		tsconfig.json
vitest.config.ts		vitest.config.ts
wxt.config.ts		wxt.config.ts

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