Why Won'T My Kindle Text Size Change After Updating?

2025-07-15 03:12:09 284

3 Answers

Clarissa
Clarissa
2025-07-21 11:55:00
I ran into this issue last week after updating my Kindle, and it was frustrating. The text size wouldn’t adjust no matter how many times I tapped the font settings. I realized the problem was tied to the book format. Some older PDFs or sideloaded files don’t support dynamic font changes. Converting the file to EPUB or AZW3 using Calibre fixed it for me. Another thing to check is whether the publisher locked the formatting—some DRM-protected books restrict customization. If it’s a Kindle Store purchase, try deleting and redownloading the book. Sometimes the update glitches the file.

Restarting the device also helps. Hold the power button for 40 seconds until it reboots. If none of this works, resetting font settings to default might clear the bug. Go to 'Display Settings' and tap 'Reset.'
Uma
Uma
2025-07-16 17:52:12
As a long-time Kindle user, I’ve learned that post-update text size issues usually stem from three things. First, the update might’ve reset accessibility settings. Go to 'Settings' > 'Accessibility' and ensure 'Font Size' isn’t overridden. Second, custom fonts can conflict. If you installed third-party fonts, remove them temporarily—Amazon’s updates sometimes break compatibility. I once spent hours troubleshooting only to find my favorite font was the culprit.

Another overlooked factor is the 'Page Display' setting. Some books default to 'Publisher Fonts,' which ignores user adjustments. Switch it to 'Kindle Fonts' in the Aa menu. For sideloaded books, formatting issues are common. Use Calibre to reconvert the file, ensuring 'Enable Heuristics' is checked to preserve flexibility.

If the problem persists, check for firmware patches. Amazon rolls out minor fixes after major updates. Go to 'Settings' > 'Device Options' > 'Update Your Kindle.' Last resort? A factory reset. Backup your data first, as this wipes all content. This method solved my issue after the 5.14.3 update.
Ursula
Ursula
2025-07-19 14:18:32
My Kindle’s text size froze after the latest update, and here’s how I fixed it. The Aa menu seemed unresponsive until I discovered a hidden quirk: pinch-to-zoom conflicts. If you’ve accidentally enabled zoom in 'Reading Settings,' it locks the text. Disable it under 'Page Display.'

Another trick is to force-stop the Kindle app. Go to 'Settings' > 'Applications' > 'Manage All Applications,' select 'Kindle,' and clear cache. This refreshes the reading engine without losing data. For stubborn cases, I toggled 'Article Mode' off—some updates enable it automatically, which restricts formatting.

If you use Word Wise or X-Ray, disable them temporarily. These features sometimes hijack font controls. I also recommend checking 'Theme' settings. Dark Mode can override custom fonts in older firmware. Switch to Light Mode, adjust the text, then revert if needed.
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