How do I enable the fullscreen rendering mode?

You can enable it by using the command '/tui fullscreen' in Claude Code or setting the environment variable 'CLAUDE_CODE_NO_FLICKER=1' before launching.

Which terminal environments are supported?

It is primarily optimized for VS Code, tmux, and iTerm2, but it may function in other compatible terminal emulators.

Does this renderer improve performance in long sessions?

Yes, it eliminates flicker and maintains flat memory usage, resulting in smoother interactions and reduced slowdowns over time.

What mouse functionalities are added?

Mouse support includes wheel scrolling for navigation and event handling to enhance usability in the terminal interface.

Claude Code Rendering

Mouse support and flicker-free rendering for Claude Code

Development

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Listed website: code.claude.com
Published in directory: Apr 19, 2026
Last record update: Apr 19, 2026

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Overview
5 key features
4 use cases

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What is Claude Code Rendering

Claude Code Rendering is an optional renderer for Claude Code that enhances the terminal user interface by virtualizing the viewport to eliminate flicker and support mouse events. It ensures stable memory usage during extended sessions, improving the experience for developers using Claude Code in environments like VS Code, tmux, or iTerm2.

Key Features

Virtualized viewport for smooth and flicker-free rendering

Mouse event support including scrolling and navigation

Optimized memory usage to maintain performance in long sessions

Seamless integration with terminal emulators such as VS Code, tmux, and iTerm2

Enhanced user interface with commands like focus view and customizable scrolling

Use Cases

Developers using Claude Code in VS Code for prolonged coding and AI-assisted tasks
Engineers managing multiple terminal sessions in tmux with improved rendering stability
Teams leveraging Claude Code in iTerm2 for collaborative projects requiring responsive interfaces
Individuals who need a reliable and efficient terminal UI for long conversations with AI tools

Why do startups need this tool?

Startups need Claude Code Rendering to enhance developer productivity by providing a stable and efficient interface for AI-powered coding, reducing distractions from flicker and memory issues. This leads to faster development cycles and better retention of technical talent, which is critical in competitive and fast-paced environments.