Jab

Jab is a browser extension that highlights interface elements using a ranker for quick keyboard navigation.

Jab is a browser extension that helps users navigate web pages using keyboard shortcuts. Pressing Control plus Q highlights the interface control that the ranker predicts the user wants based on the current page and focused elements. Pressing Enter activates the highlighted control, such as pressing a button, following a link, or focusing a text field. Subsequent presses cycle through the top four picks, and holding the shortcut with numbers one through four jumps directly to a specific choice. The tool uses a lean LightGBM tree model running entirely in the browser CPU without sending data over the network, ensuring privacy. The software is open source under the MIT license.

Jab at a glance

Best for: Software engineer
Runs on: Chrome extension
Pricing: Free
Released: October 2026
Category: AI productivity tool
Website: jab.run

Key features

Highlights predicted interface controls using keyboard shortcuts
Selects controls with the Enter key
Cycles through four ranked choices
Jumps directly to choices using number keys
Runs locally in the browser using CPU
Operates without network requests for privacy

Use it for

Navigating web page controls via keyboard
Focusing text fields quickly
Following links without using a mouse
Pressing buttons rapidly

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