> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coderide.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# In-App Browser

> A real editor tab that's a sandboxed embedded browser, split it alongside your code.

* **A real tab, not a panel** "Open in Browser" (in-app mode) opens the page as a normal editor tab: split it alongside your code, drag it between groups, resize the pane, same tab/group system as everything else
* **Navigation toolbar** back, forward, refresh (cache-busting), and an editable address bar; free navigation to any site (search, follow links, read docs), not locked to the original URL
* **Split-open** a dedicated button opens the preview straight into a new split pane in one click, next to your code
* **Resizable splits** drag the divider between any split panes (including a browser preview next to code) to resize; widths persist across restarts
* **Sandboxed** the embedded page runs with no access to Coder's own APIs (no preload, sandboxed, isolated session/storage), popups open in your real OS browser instead of a bare native window

See also [Live Reload](/livereload), which can also open its preview in-app.