pastebin

A self-hosted, private-first pastebin with syntax highlighting. Deploy on Cloudflare for free, or run it anywhere with Bun.

Features

• Syntax highlighting — 50+ languages via Shiki
• Single-user auth — passphrase-protected, no accounts needed
• PWA — installable on mobile (Samsung Internet, Chrome, etc.)
• Offline support — cached pastes viewable without internet
• 5 color palettes — dark and light modes for each
• Pin pastes — keep important pastes at the top
• Public / private — share pastes or keep them to yourself
• Responsive — works on desktop, tablet, and mobile
• Zero tracking — no analytics, no cookies beyond auth

Screenshots

Tokyo Night — Dark

Catppuccin — Light

Other themes: Catppuccin Dark · Dracula Dark · Dracula Light · Nord Dark · Nord Light · Tokyo Night Light · Shadcn Dark · Shadcn Light

Deploy — One Click

Click the deploy button above, set your AUTH_KEY secret when prompted, and you're done. Cloudflare automatically creates the D1 database and runs migrations.

Cloudflare D1's free tier gives you 500 MB of storage — enough for roughly 100,000 pastes at ~5 KB each.

Local Development

Prerequisites

• Bun (v1.0+)

Setup

# Install dependencies
bun install

# Set your auth passphrase (.env is gitignored)
cp .env.example .env

# Run local DB migration
bun run db:migrate:local

# Start the API server (terminal 1)
bun run dev:api

# Start the frontend (terminal 2)
bun run dev

Open http://localhost:5173 — the frontend proxies API requests to the dev server on :8788.

Windows (PowerShell)

.\setup.ps1

Configuration

Branding is configured in config.yaml (committed to the repo). Edit it to customize your instance — app name, description, icons, etc.

Secrets like AUTH_KEY go in .env (gitignored) for local dev, or in Cloudflare dashboard secrets for production.

File	Purpose	Committed?
config.yaml	Branding, icons, app name	Yes
.env	AUTH_KEY secret	No (gitignored)
.dev.vars	Secrets for wrangler dev	No (gitignored)

Icons: Drop your own images into public/ and update config.yaml. The bundled ghost icon is used by default and adapts its color to the active theme.

Tech Stack

Layer	Tech
Frontend	React 19, Vite, TypeScript, Tailwind CSS
Backend	Cloudflare Workers (prod) / Bun (dev)
Database	Cloudflare D1 (SQLite)
Syntax highlighting	Shiki
Icons	Lucide React