Read PDF online in dark mode.
Upload any PDF and read it right here — adjustable darkness, contrast, Sepia and AMOLED modes. Private by design: your file never leaves your device.
Drop your PDF here, or click to browse
Supports regular, scanned, and large PDFs up to ~100MB.
Private: processed locally in your browser with PDF.js. Nothing is uploaded.
A simple PDF reader with real dark mode.
Most online PDF readers give you a blinding white page. This one renders your document locally with PDF.js and applies the same difference-blend overlay as the PDF Dark Mode extension — so darkness, contrast, Sepia, and AMOLED behave exactly like they do in the extension's playground.
- Upload — click above or drag in any
.pdffile. - Read — scroll, use Prev/Next, or type a page number.
- Adjust — tune Darkness and Contrast until the page feels right.
- Close — the file is discarded from memory when you close it.
For PDFs you open every day — arXiv papers, docs, ebooks — the browser extension applies the same modes automatically, online and offline.
Reader FAQ
Is this online PDF reader free?
Yes — no signup, no watermark. The optional extension is free too, with a one-time $9.99 Pro upgrade for Sepia, AMOLED, and per-site rules.
Are my PDFs uploaded to a server?
No. Your PDF is parsed and rendered locally in your browser. Close the tab and it's gone. See the privacy policy.
What is the maximum file size?
Most files under 100MB open smoothly. Above that, desktop Chrome/Edge handle it best; on mobile, try the extension or split the file.
How is this different from the extension?
This page reads one uploaded file right now. The extension adds dark mode to every PDF you open on the web or from disk, with keyboard shortcuts and saved settings.
My PDF is password-protected. Will it open?
You'll be prompted for the password in your browser. The password is used only to decrypt the file locally and is never sent anywhere.