Quick Answer
To install custom fonts on your Kindle, download TTF, OTF, or TTC font files from trusted sources, transfer them to the Kindle’s Fonts folder via USB, restart your device, and select the font from the settings menu. Ensure the fonts are complete and compatible for best results.
Your Kindle e-reader has several built-in fonts, which are excellent for reading books purchased from the Kindle Store or borrowed through Kindle Unlimited. Some of these are even optimized for improving readability and work well with books or documents transferred from external sources.

However, you may sometimes desire greater diversity of font choices, perhaps because the text in certain books or documents—especially those transferred from external sources—isn’t legible with built-in fonts, or you want to personalize your reading experience.
Whatever the reason, you can easily sideload your favorite font on your Kindle. Keep reading, and we’ll show you how to install and use custom fonts on a Kindle e-reader.
How to Install a Custom Font on Kindle
As of the time of writing, you can install a custom font on almost any Kindle e-reader model. All you need is to have it running on software version 5.9.6 or newer. Here’s what the process looks like.
Step 1: Get the Font You Want to Install on Your Kindle
First, obtain the font you want to install on your Kindle. Below are some popular sources for finding excellent fonts:
You can even use fonts pre-installed on your computer. Irrespective of the source, your font should be in one of the supported formats. As of writing, Kindle e-readers support three font formats: TrueType (TTF), OpenType (OTF), and TrueType Collection (TTC).
When choosing a font, prioritize readability over how it looks. Likewise, always install the entire font family, like regular, bold, italic, and more—and not just a single variation, like regular—as this ensures your Kindle can properly render different text styles and doesn’t have to generate faux styles artificially.
Step 2: Prepare the Font and Move It to Your Kindle
After you download the font to your computer, the next step is to prepare them for installation. Almost all fonts you download will be in a ZIP file. Head to the folder where you downloaded the font and extract the ZIP file.
This will reveal a few files and folders (in some cases). What you need from here are your font files in TTF, OTF, or TTC format.
Now, connect your Kindle to your Mac or Windows PC using a USB cable. Then, on your Mac or Windows PC, open Finder or File Explorer, respectively. Here, you should see your Kindle as a connected device. If you don’t, you may need to unlock your Kindle for it to enter USB Drive Mode and appear on your computer.
Go to the folder containing your downloaded fonts and copy them.

Double-click the Kindle device in Finder or File Explorer and navigate to the Fonts folder. Paste the copied fonts.

Disconnect your Kindle e-reader.
Step 3: Select and Use a Custom Font on Your Kindle
With the custom fonts moved to your Kindle, selecting and using them is easy. It involves the same steps that you follow to use a built-in font.
On your Kindle, locate the power button and press and hold it until you see the Power menu. Tap the Restart option and wait for the Kindle to restart.

Once it does, unlock it. Then, open any book or document and tap the top of the screen to bring up the reading toolbar. Here, tap the Aa icon.

Go to the Font tab and tap on Font Family.

Choose one of the custom fonts you just added.

If you don’t see the newly added fonts even after a restart, it’s likely because the font file isn’t using a supported format or is corrupted (possibly due to a bad or incomplete download). Make sure to download the font in a compatible format and try again. Besides, you may also not see custom fonts in older book formats like MOBI and KF8. Try changing fonts in another book.
After you choose your font, you can also customize its weight and size. Go back one step—to the Font tab—and use the plus (+) or minus (–) button to increase or decrease the font weight or size. You’ll see the changes to the text in real time.

Tap anywhere on the screen to exit and close the toolbar.
Once you set a new font, your Kindle will use it across all the books or documents you read. If there’s a character in a book or document that the font doesn’t support or if the font lacks necessary glyphs, it won’t be able to render it correctly. Your Kindle will fall back to using the default font to display the character and ensure you can read everything fine.
Transform the Visual Aesthetics of Books and Documents on Your Kindle
Having the option to install custom fonts on your Kindle e-reader is nice to have when you feel the built-in fonts are bland or don’t cut it. Just be judicious when choosing fonts since not all fonts look great on e-ink displays, and you should be able to transform the visual aesthetics in your books and documents on your Kindle.

