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The browser pane

A Chromium the agent can drive, beside the conversation.

Each session can open a browser pane (Ctrl+Shift+B). Newen drives Chromium over the DevTools protocol: no open port, no Playwright. You can use the page with the pointer and keys while the agent works in it.

Which Chromium

Section titled “Which Chromium”
  • Windows and macOS use the Chromium that ships with Newen, drawn inside its window.
  • Linux runs a Chromium of yours by default (NEWEN_CHROME, else Settings › Browser › Chromium, else the first of chromium, chromium-browser, google-chrome-stable, google-chrome or chrome on your PATH) and paints its pages in the pane. Native view in Settings › Browser uses the shipped one instead, from the next start.

Each session has its own browser context: its cookies and storage stay apart from other sessions’, and live in memory, so sign-ins in the pane are not kept after Newen closes. Downloads go to ~/Downloads.

What the agent can do

Section titled “What the agent can do”

Navigate, read the page and its text, find elements, fill forms, click, type, scroll, drag and take screenshots, run JavaScript, read the console and network requests, resize the window, manage tabs, and batch up to 25 actions that stop at the first that fails.

It can also start the project’s dev servers from its launch file (for Claude Code, .claude/launch.json): you approve each configuration once, up to five run per folder, and they stop with Newen.

What stays with you

Section titled “What stays with you”
  • Sites. Local addresses (localhost, 127.0.0.1, *.localhost) never ask. Any other site asks: Allow once, Always allow for this website or Don’t allow. Allowed sites, subdomains included, are listed in Settings › Browser, where you can remove them. Only web pages open: file: and other schemes are refused.
  • Select element. Pick an element in the page, and its HTML and a picture go into your message.
  • Dialogs. They close themselves for the agent, and you see what they said.

Tools such as gh or Vite that open a local URL open it in the session’s own pane. Open links in built-in browser (on by default) does the same for links in the conversation; off, they go to your default browser.