Overview

LowLighter is an AI-powered screen overlay that lets you drag over any content on your screen to get instant answers, translations, summaries, explanations, and rewrites without switching applications. It works on PDFs, videos, images, websites, code, emails, spreadsheets, and any visible screen content. Features include Phantom mode that hides the overlay from screenshots and recordings, GhostKeys for OS-level hotkeys invisible to other apps, and Auto Engine that intelligently routes selections between fast, vision, and OCR processing engines.

Pricing: Free trial (15 responses) | Basic: $4.99/mo (300 vision responses) | Pro: $7.99/mo (500 vision responses, all modes) | 16% off yearly

Architecture: Apple Silicon, Intel

Key Features

Five AI modes: Answer, Translate (35 languages), Summarize, Explain, and Rewrite
Works on any visible screen content including PDFs, videos, images, websites, code, and emails
Phantom mode hides the overlay from screenshots and screen recordings
GhostKeys: OS-level hotkeys registered at the kernel level, invisible to other apps
Auto Engine intelligently routes between fast, vision, and OCR processing engines
Full customization of transparency, colors, borders, fonts, and animations
Drag-to-select interaction works across any application
Available for macOS (Apple Silicon and Intel) and Windows