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Run BunYour friendly Bun playground
Canary build: these docs may describe unreleased changes. Read this page on docs.runbun.dev

Privacy

The playground (runbun.dev) and these docs (docs.runbun.dev) set no cookies and run no analytics or tracking.

In your browser

Section titled “In your browser”

Your projects stay in your browser. The playground keeps them there and sends none of it to us:

  • Projects in the browser’s Origin Private File System (see Storage and persistence).
  • Settings (theme, keyboard shortcuts, auto-save, panel layout) in local storage.
  • The current tab’s session in session storage.
  • Folders you open from disk: the handle, so the playground can reopen the folder; the browser asks for permission again.
  • Transpiled modules in a cache, so the next run starts faster.
  • A service worker that serves your project’s files and its Bun.serve preview to the page.

Clearing the site’s data in your browser removes all of it.

Section titled “Share links”
  • A normal share link (runbun.dev/#code=…) carries the project in the part of the URL after #. Browsers don’t send that part to the server, so nothing is uploaded.
  • A short link (runbun.dev/s/…) is only made when you pick Copy short link. It stores a copy of the project on runbun.dev (Cloudflare Workers KV), and anyone with the link can open it. Files that may hold secrets (.env, keys, .npmrc) and binary files are left out. Next to the copy we keep the day it was created and the day it was last opened, and nothing about who made it.

Short links are kept until they’re removed. To have one removed, email privacy@runbun.dev with the link. The same address takes reports of illegal content and requests about personal data.

Requests from your browser

Section titled “Requests from your browser”
  • runbun.dev / docs.runbun.dev are hosted on Cloudflare, which processes requests (including your IP address) to serve and protect the sites; see Cloudflare’s privacy policy. When you make a short link, your IP address is used to limit how many you can make a minute; it isn’t stored.
  • npm: installing packages fetches them from registry.npmjs.org (npm’s privacy policy).
  • GitHub: opening a repository fetches it from api.github.com and raw.githubusercontent.com (GitHub’s privacy statement).

These requests go straight from your browser to those services, and only when you install or import something.

Changes

Section titled “Changes”

If this changes, for example if the sites add analytics, this page will say so first.