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Genius Annotations for Every Text on the Web

LightUp provides AI-powered genius annotations, making complex text simple and browsing truly insightful.

A browser extension that keeps you in the zone

Unlocks instant explanations, and expands your knowledge—simply by highlighting any text on the web.

LightUp Features Overview

Core Features

CheckmarkSmart Text Analysis for instant understanding of web content
CheckmarkQuick summaries of long articles with key takeaways
CheckmarkDeep content analysis with detailed explanations
CheckmarkDark Mode support for comfortable reading in any lighting
CheckmarkRadical Focus Mode with screen blur and clear popup

Advanced Capabilities

CheckmarkAutomatic explanation popups from highlighted text
CheckmarkText-to-Speech: Powered by the Web Speech API
CheckmarkKeyboard Shortcuts for quick access to features
CheckmarkMultiple font sizes for better readability
CheckmarkCustomizable highlight colors with six options

Technical Benefits

CheckmarkGoogle Gemini Models Support ( 1.5 Pro, 1.5 Flash , 1.5 Flash-8B, Gemini 2.0 Flash-Lite, Gemini 2.0 Flash, Gemini 2.0 Flash Thinking )
CheckmarkGrok Integration for Advanced AI Capabilities (Grok 2)
Checkmark10 Local LLM Integration: ( Llama 2 70B Chat, DeepSeek V3, Mixtral 8x7B Instruct, Llama 2 13B Chat, Mistral 7B Instruct, Neural Chat V3.1, DeepSeek V3 Base, Llama 3.2 3B Instruct, Phi-2, OpenChat 3.5 )
CheckmarkPrivacy-first with local processing options
Beta – Get Early Access

Download LightUp Now

With LightUp, every highlight unlocks real-time insights, in-depth explanations, and transformative context — all at your fingertips.

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Brave
Opera
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Add to Chrome - It's Free

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Frequently Asked Questions

Created by BOI from Moe
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