Apple font size
The font size when I’m reading an Apple ebook changes from chapter to chapter without my intervention.
iPad, iPadOS 16
Question marked as
User profile for user:
OrigamiFan1
User level:
Community Specialist
Hi Fairsky66,
For help with changing the font or appearance, test resetting the theme with the steps below found in the article here: Read books in the Books app on iPad - Apple Support
"Change the text and page appearance
- Tap the page, tap
at the bottom of the page, tap Themes & Settings, then do any of the following:
- Change the font size: Tap the large A to increase the font size or tap the small A to decrease it.
- Change the font: Tap Options, tap Font, select a font option such as Georgia or Palatino, then tap Done.
- Turn on vertical scrolling: Tap
to scroll continuously through a book.- For PDFs, tap
, at the top of the screen then turn on Vertical Scrolling. - Adjust the display brightness: Tap
, then choose an option. - Change the page background color: Tap a page theme such as Quiet or Bold.
- Make the font bold: Tap Options, then turn on Bold Text (green is on).
- Customize spacing and justification: Tap Options, turn on Customize (green is on), then drag the sliders left or right to adjust line spacing, character spacing, and word spacing. You can also turn Full Justification and Allow Multiple Columns off or on (green is on).
- For PDFs, tap
2.Tap Done to apply your changes.
Note: You can choose on which side of the screen the menu button appears. Go to Settings 
> Books, then choose Left or Right below Reading Menu Position.
To undo text and layout customizations, tap Options, tap Reset Theme, then tap Done."
You can also find helpful steps for cleaning the screen of your iPad to test here: How to clean your Apple products - Apple Support
Cheers.