Change Font and Text Size on Kindle

Open the book, tap the top of the page to reveal its toolbar and choose Aa. In the Font options, select an available family or adjust the size control. Amazon also documents pinch gestures for reading-text size.

Options vary by device model and content. The presence of a publisher font is tied to the book’s supplied font resources.

Compare a full paragraph rather than one word. Choose a comfortable size first, then consider line spacing and margins so the text does not feel unnecessarily crowded.

Keep enough representative text on screen to judge punctuation and line length before deciding that a different family is needed.

Amazon documents device font-size settings for supported newer models separately from e-book text size. Use Settings > Screen and brightness > Display & text size where that device option is offered.

If a control is absent, check the instructions for the actual model and content instead of assuming every Kindle has the same menu.

A larger size is a scale choice; selecting another family changes the letter design. Read typeface versus font for that distinction.

For creating a publication rather than reading one, compare the book font collection and review the requirements of the actual production format.

Amazon’s reading-app accessibility help lists OpenDyslexic among the Font Type choices for supported books in its Android and iOS/macOS apps. Open a book, select the top center and open Aa, then the relevant Font tab. The same help lists spacing adjustments and a Reading Ruler among the app’s reading options. Those controls belong to the documented reading environment, not every Kindle model or every book format.

Kindle for Web has a separately documented set of choices: Bookerly, Amazon Ember and OpenDyslexic. Use Aa while a book is open to reach its reading settings. Pick the instructions for the environment you actually use rather than assuming a mobile app, browser and e-reader have identical menus. The family is an available option to try; its name does not establish that every reader will perform better with it.

There is no single best Kindle family for every reader and book. Choose a familiar passage long enough to include ordinary dialogue, punctuation and several paragraphs. Keep the size and layout steady while comparing two offered families. Then adjust spacing or scale separately, so you can tell which change addressed the difficulty.

Notice whether you lose your place, confuse particular shapes or find the line length tiring. A reading ruler, a different layout or supported audio assistance may address a different difficulty from the letter shapes. Keep the setting that helps your actual reading task rather than choosing by the family’s label alone. The dyslexia-font guide separates reader preferences from claims about evidence; the Bookerly profile provides context for another named Kindle design.