If you’re reading this, chances are you already tried exporting an EPUB… opened it… and the layout exploded.
Text jumped around.
Images stacked in weird places.
Margins disappeared.
Maybe Apple Books looked okay but Kindle Previewer looked like a train wreck.
Yeah. Happens to everyone the first time.
The reason is simple: you created a normal (reflowable) EPUB when what you actually needed was a fixed layout EPUB.
Two completely different beasts.
Once you understand that difference, most of the frustration disappears.
What a Fixed Layout EPUB Actually Is
A Fixed Layout EPUB (FXL EPUB) locks every element to a precise position on the page.
Nothing moves.
Text stays where it was designed.
Images stay anchored.
Fonts remain exactly placed.
Think of it like a PDF that behaves like an EPUB.
Readers can still flip pages and zoom, but the layout does not rearrange itself based on screen size.
This format exists for books where layout matters.
Typical examples:
• Children’s picture books
• Cookbooks
• Photography books
• Graphic novels
• Comics
• Textbooks with diagrams
• Magazine-style layouts
If the design matters visually, reflowable EPUB will break it.
Fixed layout prevents that.
The #1 Reason Authors Use The Wrong EPUB Type
Most writing tools export reflowable EPUB by default.
That’s fine for novels.
Disaster for visual books.
Here’s the quick difference.
| Feature | Reflowable EPUB | Fixed Layout EPUB |
|---|---|---|
| Text flow | Adjusts to screen | Locked position |
| Images | Move with text | Anchored on page |
| Layout | Flexible | Exact design |
| Best for | Novels | Visual books |
| File structure | Simple | More complex |
The mistake happens when someone designs a beautiful layout in InDesign… exports a regular EPUB… and watches everything shift.
Not your fault.
Wrong format.
When You Must Use Fixed Layout
Ask one question:
Does the layout itself carry meaning?
If yes, use fixed layout.
Examples from real projects:
A children’s alphabet book where the letter sits beside the illustration.
A cookbook where ingredient lists sit beside step photos.
A photography portfolio where captions align with images.
Reflowable EPUB can’t guarantee those relationships.
It just pours text like water into whatever screen it’s on.
The Simple Way Most Professionals Create Fixed Layout EPUB
Almost every professional workflow starts in one place:
Adobe InDesign
Because it was literally built for this job.
Inside InDesign the process looks like this:
• Design pages normally
• Set page size
• Place images and text frames
• Export as EPUB (Fixed Layout)
That’s it.
But—and this is the part beginners miss—there are three settings that must be correct during export.
The Three Export Settings That Break Most EPUBs
Open the export panel and check these.
Format: EPUB (Fixed Layout)
Not EPUB (Reflowable).
Then confirm:
• Spread control → Off (unless it’s a picture book spread)
• Image handling → Preserve appearance
• Navigation TOC → Based on paragraph styles
Miss any of those and things start behaving oddly on some readers.
Especially Kindle.
Kindle Complicates Things (Of Course It Does)
Amazon doesn’t technically use standard EPUB internally.
They convert everything to KPF format.
The conversion happens through:
Kindle Create
or
Kindle Previewer
Here’s the workflow most publishers use:
- Export Fixed Layout EPUB from InDesign
- Open it in Kindle Previewer
- Preview device behavior
- Export KPF
Then upload to KDP.
Skipping the preview step is risky.
I’ve seen EPUBs that look perfect in Apple Books but break on Kindle tablets.
The Weird Edge Case Nobody Warns Authors About
File size.
Fixed layout books get big fast.
Images are usually the culprit.
A children’s book with 20 full-page illustrations can easily exceed 100 MB if you’re careless.
Kindle and Apple both recommend keeping images around 300 DPI at final size, but compress them properly.
Here’s what works reliably:
• JPEG for photos
• PNG for line art or transparency
• Keep images under 2–3 MB each
Heavy files cause:
• slow downloads
• Kindle rejection
• laggy page turns
The Hidden Problem: Fonts
Fonts inside fixed EPUBs must be embedded.
Otherwise readers replace them.
Suddenly your beautiful typography becomes Times New Roman.
Inside InDesign check:
Embed fonts
Also confirm the license allows embedding. Some fonts block it.
Common safe choices:
• Open Sans
• Lora
• Merriweather
• Roboto
The Two Reading Platforms That Handle Fixed Layout Best
Most stable environments today:
• Apple Books
• Kindle
Apple Books supports fixed layout beautifully.
Kindle works too but requires conversion.
Older EPUB readers sometimes struggle.
Not common anymore, but it happens.
Still Seeing Layout Problems? Check These First
Nine times out of ten the issue is one of these.
Image anchored incorrectly
InDesign object settings should use Custom positioning → Relative to page.
Not inline.
Spread pages exported accidentally
Two-page spreads sometimes appear as separate pages.
Check the spreads export option.
Fonts not embedded
Reader substitutes fonts.
Layout shifts.
Oversized images
Large files slow rendering.
Readers glitch.
Absolute positioned text outside page bounds
This happens when frames extend past the page edge.
EPUB readers hate that.
Tools Authors Use Besides InDesign
Some authors avoid Adobe subscriptions.
Other tools exist.
| Tool | Good For | Limitation |
|---|---|---|
| Affinity Publisher | InDesign alternative | EPUB export weaker |
| Kotobee Author | interactive books | learning curve |
| Sigil | manual EPUB editing | requires HTML/CSS |
But honestly?
Most fixed layout books in publishing still originate in InDesign.
It’s just the most stable workflow.
The One Thing I Wish Every Author Knew From Day One
Design the book at the exact size it will be read.
Example:
If your fixed EPUB is designed for tablets, use something like:
2048 × 1536 px pages
That matches common tablet resolution.
Designing at print sizes like 8.5×11 inches sometimes causes scaling problems.
Digital layout behaves differently than print.
Quick Reality Check Before You Publish
Open your EPUB in at least three readers.
• Kindle Previewer
• Apple Books
• Adobe Digital Editions
Flip every page.
Rotate device orientation.
Zoom in.
If nothing breaks there, you’re safe.
The Bottom Line
Fixed layout EPUBs aren’t complicated once you understand one core truth:
They are design-driven books, not text-driven books.
Which means layout decisions matter just as much as the writing.
Get the export settings right.
Keep images optimized.
Embed fonts.
Test on real readers.
Do that and your book behaves exactly how you designed it.
No surprises.
No exploding layouts.
Just pages turning exactly the way you planned.