hjkl

What is hjkl?

hjkl is a free, keyboard-first tool for learning Vim directly in a desktop browser. It uses short, hands-on editing challenges to help users practice core Vim concepts like motions, text objects, search, marks, counts, and repeats.

Each skill session follows a structured format: two guided edits with live hints, two prompted edits, and two independent edits. Any valid command sequence that produces the target text passes the challenge. Users can pick specific skills to focus on.

The platform requires a physical keyboard and a browser window at least 768 pixels wide. It runs entirely client-side with no account creation, sign-up, or data storage. Progress remains in memory only while the tab is open. A complete Vim commands cheat sheet is also available.

hjkl features

• Hands-on editing challenges for Vim skills
• Structured guided, prompted, and independent practice
• Runs entirely in a desktop browser
• Requires a physical keyboard and 768px viewport
• No sign-up or persistent data storage
• Includes a comprehensive Vim commands cheat sheet
• Supports AI agent integration via document.modelContext

Who uses hjkl and for what

• Practice Vim navigation and deletion commands without installing software
• Build muscle memory for text object manipulation through repetition
• Refresh forgotten Vim shortcuts before starting a new coding project
• Test Vim editing workflows on a temporary or restricted computer
• Prepare for technical interviews that require terminal proficiency

hjkl FAQ

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