GStack Browser

This browser is connected to your Claude Code session. The sidebar is your co-pilot: it can control this window, read pages, edit CSS, and pass everything back to your terminal.

Talk to the sidebar

The sidebar chat is a Claude instance that controls this browser. Say "go to my app and check if login works" and watch it navigate, click, fill forms, and report back.

Or use your main agent

Your Claude Code terminal also controls this browser. Run /qa, /design-review, or any skill and watch every action happen here. Two agents, one browser.

Import your cookies

Click 🍪 Cookies in the sidebar to import login sessions from Chrome, Arc, or Brave. Browse authenticated pages without logging in again.

Clean up any page

Click Cleanup in the sidebar. AI identifies overlays, paywalls, cookie banners, and clutter, then removes them. Articles become readable.

Smart screenshots

The Screenshot button captures a cleaned screenshot and sends it to your Claude Code session as context. "What's wrong with this page?" now has a visual answer.

Modify any page

The sidebar can edit CSS and DOM on any page. "Make the header sticky" or "change the font to Inter." Changes happen live, reported back to your terminal.

Try it now
Open the sidebar and type: "Go to news.ycombinator.com, open the top story, clean up the article, and summarize the key points back to my terminal"
On any article page, click Cleanup to strip away the noise
Click Screenshot to capture the page and send it to your Claude Code session
Ask the sidebar: "Inspect the CSS on this page and send the color palette to my terminal"
From your Claude Code terminal: "Navigate to my app, extract the full CSS design system, and write it to DESIGN.md"