Lumen

What it does

Lumen is a free, native macOS PDF reader built with SwiftUI — no subscription, no ads, just annotations, bookmarks, search, and outline view that actually work.

Contribute to goodjin/Lumen development by creating an account on GitHub.

A elegant, native PDF reader for macOS — built for researchers, students, and power users. macOS Preview is basic. Skim lacks polish. PDF Expert is expensive and slow. Lumen combines the simplicity of Preview with the power of paid apps — all in a lightweight, native macOS package. Annotation Tools — Highlight, underline, strikethrough, and sticky notes. Finally, annotate PDFs without paying for Adobe or losing your highlights when files sync. Bookmark Management — Never lose your place again. Organize reading progress with named bookmarks and find them instantly. Full-Text Search — Find any word or phrase across entire documents in milliseconds. No more scrolling through 500-page papers…from github.com

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