How to Adjust Text Size on Kindle
You can change the text size on any Kindle device, and this option is always accessed through a button marked Aa. Early Kindle models that included a keyboard had a physical Aa button, which you could push to access font size options. Models without a keyboard had a physical menu button, which you could push when reading a book to access text options. Starting with the second-generation touchscreen Kindle, text size is adjusted by accessing the reading toolbar while reading a book and tapping the Aa button. Here’s how to adjust the text size on a Kindle:
Why Can’t I Change the Font Size on My Kindle?
The most common issue that prevents changing the font size on a Kindle is that you can only change the font size while reading a book. This option isn’t available on the home screen, in the library, or in the device options. In early versions of the Kindle, pushing the physical Aa button wouldn’t do anything if you didn’t have a book open. In some later versions, you could access the reading toolbar without a book open, but the Aa option would be grayed out. The other common issue that prevents changing the font size on a Kindle is that you can only change the font size in Kindle ebooks. If you obtain an ebook from another source, you may not be able to change the font size. This issue can also crop up when you load documents like PDFs directly onto your Kindle. If you convert the PDF to Kindle format, you’ll be able to adjust the text size.
