LowLighter – Instant AI responses from any on-screen content

Summary: LowLighter lets users select any visible screen content and receive immediate AI-generated answers, explanations, translations, rewrites, or summaries in a floating overlay without switching apps. It supports fullscreen, videos, PDFs, images, and foreign text with OCR-based translation in 35 languages.

What it does

By pressing a hotkey and dragging over screen content, LowLighter displays AI results instantly in an overlay. It includes Phantom mode to hide overlays from screen recordings and performs local OCR for fast translations.

Who it's for

It is designed for macOS users needing quick AI assistance on any visible content without interrupting workflow.

Why it matters

LowLighter eliminates the need for screenshots, app switching, and copy-pasting, streamlining access to AI insights directly on screen.