How to Darken PDF documents in a web browser in 3 easy steps?


Are you looking for how to darken pdf documents? Then you are on the correct help page. The PDF stands for “Portable Document Format”. It is a file that is used for distributing read-only documents that keep the layout of the page. You mostly see PDFs for manuals, eBooks, and promotional product folders. It is available as a cross-platform file type. So if you open the PDF file on Mac or Windows, they will look both the same.

When you think about PDF, you mostly think also of Adobe Acrobat Reader. That is the application to read your PDF file on your desktop computer. But recently you can also open your PDF file in any modern web browser such as Google Chrome, Firefox, Opera, Safari, and Microsoft Edge.

The Turn Off the Lights browser extension can darken PDF documents in your favorite web browser (that on desktop and iOS 15 with the Safari extension). So you see no bright PDF documents on your web browser or on your mobile device. And get a comfortable experience for your eyes. Then that bright light is shining on your face.

Darken PDF Documents with the free Turn Off the Lights browser extension
Darken PDF Documents

Step on how to darken PDF documents?

The Turn Off the Lights browser extension is available for all web browsers. That includes Google Chrome, Firefox, Safari, Opera, Yandex, Brave, Vivaldi, and Microsoft Edge. Here are the steps on how you can enable the Night Mode feature in your web browser. So you can darken PDF documents online.

  1. Download the Turn Off the Lights browser extension
  2. Click right on the gray lamp button and select Options in the menu item
  3. The Turn Off the Lights Options page shows up and select the tab Night Mode
  4. Enable here the Night switch or the long-press feature to activate the night mode on the current web page

It is easy to convert the current PDF document into your dark theme. It can darken PDF documents for free.

YouTube video tutorial

Get PDF in Dark Mode

How to read PDF in dark mode

How to all web pages in dark mode

The video instruction on how to enable the Night Mode feature that can darken PDF documents


Hope that will answer one of your questions about the PDF in Dark Mode:

  • Activate dark mode for PDF Online
  • How do I make PDF Online Black?
  • Is there a dark mode for PDF Online?
  • How to enable dark mode for PDF Online?
  • How to adobe acrobat darken pdf files?

The Turn Off the Lights browser extension can do much more to get you a comfortable dark mode experience in your web browser. That from PDF files in dark mode, but also website. If you find it useful to get your Microsoft Word Online in Dark Mode, then you can share the link on Facebook or share the link on Twitter. So your family, friends, or colleagues can know about this handy free tool.


Where do the PDF stands for?

The PDF abbreviation stands for the name “Portable Document Format”. It is a digital file type that saves your text, image, and layout. And when you open the PDF file on your computer or web browser, you will see all the same page layout and text (that on all platforms).

Which PDF Readers Have Dark Mode?

On your desktop, you can use Adobe Acrobat Reader, which provides you the option to use the “High Contrast Colors” theme. For on the web, you can use the Turn Off the Lights browser extension and enable the Night Mode feature. That converts web pages but also the PDF files in your favorite web browser.

Is PDF Dark Mode Better for Your Eyes?

Reading a text on a white background and the text in black is a more sense to read to document clearly. But when you read it at night, it can damage your eyes because of the bright light shining directly into your eyes. And with the help of the Dark Mode feature, to darken PDF documents. You can reduce this bright light. So it is comfortable for your eyes at night.

Did you find technical, factual or grammatical errors on the Turn Off the Lights website?
You can report a technical problem using the Turn Off the Lights online technical error feedback form.

About The Author

Stefan Van Damme