Localflare

Local development dashboard for Cloudflare Workers. Visualize and interact with your D1 databases, KV namespaces, R2 buckets, Durable Objects, and Queues during development.

Features

• D1 Database Studio - Full-featured SQL editor, data browser with inline editing, filtering, sorting, bulk operations, and dummy data generation
• KV Browser - View, edit, and delete key-value pairs
• R2 File Manager - Upload, download, and manage objects
• Queue Inspector - Send test messages to queues
• Durable Objects - View and interact with DO instances
• Zero Config - Reads your wrangler.toml automatically
• Framework Agnostic - Works with any framework (Next.js, Nuxt, Remix, Hono, etc.)

Quick Start

# Navigate to your Cloudflare Worker project
cd your-worker-project

# Run Localflare
npx localflare

That's it! Localflare will:

1. Detect your wrangler.toml configuration
2. Start your worker at http://localhost:8787
3. Open the dashboard at https://studio.localflare.dev

Installation

npm install -g localflare
# or
pnpm add -g localflare
# or use directly with npx
npx localflare

Usage

Basic Usage

# Run in your Worker project directory
localflare

# Custom port
localflare --port 9000

# Custom persistence directory
localflare --persist-to ./my-data

# Don't open browser automatically
localflare --no-open

Pass Wrangler Options

Use -- to pass options directly to wrangler:

# Use a specific environment
localflare -- --env staging

# Set environment variables
localflare -- --var API_KEY:secret

# Combine options
localflare --port 9000 -- --env production --remote

Attach Mode (for custom dev workflows)

For projects with custom dev commands (OpenNext, Nuxt, etc.), use attach mode:

# Terminal 1: Your dev server
pnpm dev        # or: opennext dev, nuxt dev, wrangler dev, etc.

# Terminal 2: Localflare API
localflare attach

# Custom port for Localflare API
localflare attach --port 9000

Attach mode runs the Localflare API separately, sharing the same persistence directory with your dev server.

Options

localflare [configPath] [options]

Options:
  -p, --port <port>        Worker port (default: 8787)
  -v, --verbose            Verbose output
  --no-open                Don't open browser automatically
  --no-tui                 Disable TUI, use simple console output
  --dev                    Open local dashboard instead of studio.localflare.dev
  --persist-to <path>     Persistence directory for D1/KV/R2 data (default: .wrangler/state)
  -h, --help               Display help
  --version                Display version

localflare attach [configPath] [options]

Options:
  -p, --port <port>        Localflare API port (default: 8788)
  --no-open                Don't open browser automatically
  --dev                    Open local dashboard instead of studio.localflare.dev
  --persist-to <path>     Persistence directory for D1/KV/R2 data (default: .wrangler/state)

Requirements

• Node.js 18+
• A Cloudflare Workers project with wrangler.toml
• wrangler dev must work for your project (Localflare runs alongside wrangler)

Browser Troubleshooting

The Localflare dashboard runs at studio.localflare.dev and connects to your local worker. Some browsers have security features that may block this connection.

Chrome / Chromium

Recent Chrome updates may block local network access by default. This prevents the dashboard from connecting to your localhost worker.

To fix:

1. Click the lock/info icon in the URL bar (Site information)
2. Find "Local network access" or "Insecure content"
3. Set it to "Allow"
4. Refresh the page

Safari / Brave

Safari and Brave block access to localhost from external sites by default. You need to install mkcert and generate a local CA:

# Install mkcert (macOS)
brew install mkcert

# Install the local CA
mkcert -install

# Restart your browser

Brave alternative: You can also disable Brave Shields for studio.localflare.dev:

1. Click the Brave Shields icon in the URL bar
2. Toggle shields off for this site

Supported Project Types

How It Works

Localflare uses a sidecar architecture that runs alongside your worker in the same wrangler process. Both workers share the exact same binding instances, enabling full read/write access to all your data.

Single wrangler dev Process
├── Your Worker (http://localhost:8787)
│   └── Your application code unchanged
├── Localflare API Worker
│   └── Dashboard API routes (/__localflare/*)
└── Shared Bindings
    ├── D1 databases (same instance)
    ├── KV namespaces (same instance)
    ├── R2 buckets (same instance)
    ├── Queues (same in-memory queue)
    └── Durable Objects (same instances)

This architecture means:

• Your code stays untouched - No SDK, no modifications needed
• Real binding instances - Not mocks, actual working bindings
• Queue messages actually work - Send messages that your consumer receives
• Works with any framework - If it runs on Workers, it works with Localflare

Packages

Development

# Clone the repo
git clone https://github.com/rohanprasadofficial/localflare
cd localflare

# Install dependencies
pnpm install

# Build all packages
pnpm build

# Terminal 1: Start the demo app worker and localflare API
cd demo-app
pnpm run dev:client
pnpm run dev:studio

# Terminal 2: Start the dashboard
cd packages/dashboard
pnpm run dev

# Open the dashboard
# http://localhost:5174/d1?port=8787

Supported Bindings

D1 Database Studio

A comprehensive database management interface inspired by Drizzle Studio and Supabase:

Data Browser

• Paginated table data with customizable page sizes (25, 50, 100, 250 rows)
• Resizable columns with drag handles
• Column visibility toggle - show/hide columns
• Global search across all columns
• Column-level filtering (equals, not equals, contains, starts with, is null, is not null)
• Client-side and server-side sorting (ORDER BY toggle)
• Inline cell editing with auto-save
• Row actions: Edit dialog, Copy as JSON, Delete
• Bulk row selection and bulk delete
• Add new rows via form dialog
• Generate Dummy Data - Insert 1-100 rows of fake data using Faker.js
  • Supports all SQLite/D1 types: INTEGER, REAL, TEXT, DATE, DATETIME, TIMESTAMP, TIME, BOOLEAN, NUMERIC, DECIMAL, BLOB
  • Auto-skips auto-increment primary keys

SQL Query Editor

• Syntax highlighting with CodeMirror
• SQL autocomplete for tables, columns, and keywords
• Execute with Cmd/Ctrl + Enter keyboard shortcut
• Results displayed in table format
• Query history with re-run capability (persisted in localStorage)

Schema Viewer

• View table structure with column definitions
• Column types and primary key indicators
• Row counts per table

Contributing

We welcome contributions! Whether you're fixing bugs, adding features, or improving documentation, your help is appreciated.

Check out our Contributing Guide to get started.

Before contributing:

1. Check existing issues and discussions
2. Read the Contributing Guide
3. Follow the code style and conventions
4. Test your changes thoroughly

Sponsorship

If you find Localflare useful, please consider supporting its development:

Your sponsorship helps with:

• Continued development and maintenance
• New features and binding support
• Documentation improvements
• Community support

Become a Sponsor

Links

• Documentation
• GitHub
• npm
• Twitter

License

MIT