Pick a daily target. Lumen will keep track while you're reading.
—today
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Your library is empty
Add a PDF. We’ll handle the boring bit.
Typeface
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Theme
Translate highlights
Translate on select
Turn this on to translate selected text. On-device if your browser can; otherwise online. Online means internet, possible limits, and sending the passage to the service. Saved translations stay with the highlight.
Highlights
Lumen ReaderPreparing…
Backup & Restore
Take your library with you. Includes text, notes, highlights, bookmarks, settings, progress, Removed Books, and PDFs stored here.
Restore this backup?
Pick a backup. Check what’s inside. Then restore.
0 books0 original PDFs
Backups stay in your chosen file location.
Vault health
Check storage. Manage snapshots.
Checking storage…
Recovery snapshots 0 saved
No safety snapshots yet. Make one before you poke around.
Three snapshots max. Each keeps local books, notes, settings, progress, and stored PDFs. If a safe copy can’t be saved, restore is blocked. Sensible, really.
Restore updates matching books and leaves the rest alone. A safety snapshot comes first. Backup files are readable, so don’t leave them lying around.
ESC
Search the library↑↓ move · ↵ open
QUICK TOUR
Fancy a quick lap?
Search, highlights, filters, themes, backups. No lecture. Skip whenever.
01 / 08
The useful bits
LUMEN READER
Your books, wherever you are.
Sign in to pick up on another device. Your reading place, notes and highlights come with you.
Pick up where you left off
Keep notes and highlights together
Use the same account on your other devices
YOUR LUMEN ACCOUNT
You're signed in
Your library is linked to this account. Use the same email on your other devices.
Connect to your Lumen account.
Your library will stay on this device until you sign in.
Lumen Reader · 5.5
What do we call you?
Change it later. Obviously.
Traffic Jam!
Too many people are crowding Lumen right now. We’re sorting it out — give us a moment and try again soon.