Read PDF in Dark or Sepia Mode

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How to use PDF Reader with Dark & Sepia Themes

Choose a PDF.
Pick Original, Dark or Sepia.
Zoom and turn pages with the buttons or arrow keys.
Use Download original if you need the file back.

What to expect

Nothing is changed. Themes only affect how pages are displayed in your browser.

Dark mode inverts colours, so photos and charts look different; switch to Original when colour matters.
This is a viewer: it does not edit, annotate or print with the theme.

Frequently asked questions

Is my PDF uploaded anywhere?

No. The PDF is processed by JavaScript in your browser. Only the website's own code and assets are downloaded, and you can check this in your browser's network panel.

Do I need to create an account?

No. Every tool works without sign-up or login.

Is it safe for confidential documents?

Files are processed locally in your browser and never uploaded. Close the tab or select Clear to release them from memory.