Turn any PDF dark.
Drop a PDF and get a night-friendly version you can read anywhere. Photographs stay photographs — nothing turns into a negative.
No account required. Preview free, then £0.99 per document.
It reads like a book
Backgrounds become a deep neutral, body text becomes a warm light grey. Not a harsh inversion — a considered one.
Pictures survive
Photographs, charts and diagrams are detected and treated on their own terms, so your figures still mean what they meant.
It is still a PDF
Text stays selectable and searchable, links keep working and bookmarks stay put. Open it anywhere.
What happens to your file
Your PDF is uploaded over an encrypted connection so we can convert it, stored under a random name that means nothing to anyone, and deleted automatically — as soon as you download, and in any case within an hour. Nobody reads it, and nothing is used to train anything.