3 Free and Easy Methods to Darken a PDF

Summary :

Darkening a light PDF makes it more visible or comfortable to read. Let’s find out three free methods for you to darken a PDF effortlessly.

Table of Contents

How to Darken a PDF

How to Darken a PDF

Darkening a PDF typically refers to the process of increasing the contrast or intensity of the text and images in a PDF file to make them more visible or easier to read.

This can be particularly useful when the original document has low contrast or has been scanned with light text or images that are difficult to see.

On this page, you’ll learn about 3 free and easy methods to darken a PDF.

👉 To get started, get PDFgear, the best tool to darken PDFs while reading.

Darken PDF in PDF Reader Dark Mode

If you’re looking for the most convenient method to darken your PDF, then using a dark mode in a PDF reader is the top choice.

The free PDF editor & reader PDFgear offers a customizable reading mode feature that allows users to read PDF documents in a customizable color scheme (including a dark mode), providing a more comfortable reading experience.

Best PDF Darkener Software

Free PDF reader to read darkened PDF with comfort. Get PDFgear now!

This feature is available on both the PDFgear software and the PDFgear mobile app for iOS devices.

Step 1. Download and install PDFgear, fire up the software, and click Open File to open the PDF you need to darken.

Click Open File

Click Open File

Step 2. When the PDF file is loaded, click the upper-right Appearance button, and select Night Mode from the dropdown.

Click Night Mode

Click Night Mode

Step 3. That’s it! The PDF is darkened. And the original PDF file will stay light.

PDF Darkened in PDF Reader

PDF Darkened in PDF Reader

Darken PDF via Grayscale Printing

If you intend to darken the PDF file on your device permanently, the powerful PDF reader PDFgear also provides a printing feature for you to print the PDF into a grayscale copy.

This adjusts the contrast, brightness, or gamma of the document to achieve the desired level of darkness.

Best PDF Darkener Software

Free to print PDF files to darkened grayscale color. Get PDFgear now!

The feature-rich virtual printer in PDFgear also allows you to print PDFs with various customizable options, such as paper sizes.

Step 1. Download and install PDFgear, open it on your computer, and click Open File to open the PDF you want.

Click Open File

Step 2. When the PDF is loaded in the PDF editor screen, click the upper-left Print button.

Click Print in PDFgear

Click Print in PDFgear

Step 3. In the Printer settings window, select a preferred printer like Microsoft Print to PDF, and tick on the Grayscale option.

Print PDF to Grayscale

Print PDF to Grayscale

Darken PDF in Chrome

The popular web browser Chrome serves also as a PDF reader as well as a PDF printer. Chrome provides various printing options, including page selection, scaling, and color mode.

In the Color Mode option, Google Chrome offers a convenient feature to convert and print PDF files in black and white, helping users save ink, darken the PDF, and make documents easier to read.

However, you should note that the process will result in the loss of interactive elements.

Step 1. Open the Chrome web browser, drag and drop the PDF into Chrome.

Step 2. Click on the upper-right “Print” button or use the “Ctrl+P” shortcut.

Step 3. In the print settings, select “More Settings” and find the “Color” option.

Darken PDF in Chrome

Darken PDF in Chrome

Step 4. Choose “Black and white” from the dropdown menu to convert the PDF to grayscale.

Step 5. Lastly, click Print to darken the PDF.


Why would I need to darken a PDF?

Darkening a PDF can be useful for various reasons, such as improving readability, enhancing the contrast of scanned documents, or preparing documents for printing.

Will darkening a PDF increase its file size?

Darkening a PDF may slightly increase its file size, particularly if the changes result in more complex images or additional layers. However, the increase is generally minimal and should not significantly impact the overall file size.

Can I undo the darkening if I’m not satisfied with the result?

When darkening PDFs with PDFgear, your original document will stay intact, allowing you to revert to the original version if needed.

Moreover, it’s always a good idea to keep a backup copy of your original PDF before making any modifications.

Are there any potential issues with darkening a PDF?

Darkening a PDF may cause some issues, such as reduced readability if the text becomes too dark, loss of detail in images, or increased printing costs due to higher ink usage. It’s essential to carefully review the darkened PDF to ensure that it meets your requirements and make adjustments as needed.

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