KDP Trim Sizes: How to Choose the Right Book Size
Every Amazon KDP trim size in inches and centimeters, which size fits which kind of book, and how trim size changes your page count, printing cost, and royalties.
For self-published KDP authors
Sell more books
on Amazon.
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Writing the book was the easy part.
You published on KDP. You waited. Nothing happened. That's not because your book isn't good — it's because Amazon's algorithm only promotes books that already have momentum. The right keywords, the right categories, an optimized listing. Without those, you're invisible.
Category Finder
Picked the wrong categories? Easy to fix.
KDP gives you 10 category slots — most authors waste 8 of them. AuthorClimb scores every Amazon category against your book and surfaces the ones where you can realistically rank #1, not just the ones that sound right.
5,200+ categories · AI-scored relevance · free on every plan
Cozy Mystery94
Women Sleuths88
Amateur Sleuths76
Crime Fiction41
Relevance vs. your book
Keyword Tracker
Are readers actually finding your book?
You picked keywords when you published — but do you know if they're working? Track your Amazon search ranking for every keyword, daily. See who's outranking you and where the real opportunities are.
Updated daily · competitor SERP data included
historical fiction kids#3
adventure books 8-12#7
chapter books boys#12
Ranking trend — last 30 days
Listing Optimizer
Your listing is your storefront. Is it working?
Most authors write their product description once and never touch it again. AuthorClimb analyzes yours against the top-ranking competitors for your keywords and shows you exactly what to fix — with smart rewrite suggestions to save you time.
Keyword gap analysis · relevancy scoring · smart suggestions
82
Relevancy Score
vs. top 10 competitors
Book Tracker
Know what actually moves your sales.
Upload your KDP report, log changes like price drops, cover updates, or new keywords, and Book Tracker shows the before/after impact on orders and KENP reads. Stop guessing which tweak worked — measure it.
KDP sales import · event timeline · before/after impact
Before4.2 / day
After11.8 / day
Cover update — 14-day impact
A+ Content
Look like a traditional publisher — without one.
The "From the Publisher" section can boost conversions by up to 8%. But most indie authors skip it because it's a pain to create. Upload your book, pick a layout, and AuthorClimb handles the rest.
Professional layouts · AI-generated copy and images
Without
With A+
+8%
conversion lift with A+ Content
I was stuck with no visibility for months. Within three weeks of using AuthorClimb, real readers found my book and my daily sales tripled.
Jessica T. — self-published romance author
Four steps to more sales.
01
Add your books
Import from Amazon with your ASIN, or add manually. Your full catalog in minutes.
02
Track & analyze
See where you rank for every keyword. Analyze your listing against the competition.
03
Optimize & create
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04
Measure & iterate
Log price drops, cover changes, and new keywords — see the before/after impact on sales.
Simple, transparent pricing.
Start free, upgrade when you're ready. Every paid plan drops ARC reviews to $6 instead of $9, and banks the orders you don't use.
| Feature | FreeFreeNo card needed | Lite$99/yr$8.25/mo billed annuallyPays for itself at 4 ARCs a month | Pro$290/yr$24.17/mo billed annuallyMost authors start here | Ultra$790/yr$65.83/mo billed annuallyFor a full catalog |
|---|---|---|---|---|
| ARC distribution | ||||
| Price per ARC review | $9 | $6 | $6 | $6 |
| Orders a month | 10 | 20 | 50 | 150 |
| Unused orders roll over | Not included | Up to 60 | Up to 150 | Up to 450 |
| Toolkit | ||||
| Tools included | Category + Listing | Category + Listing | Full toolkit | Full toolkit |
| Books you can track | 1 | 1 | 10 | 40 |
| Start free | Get Lite | Get Pro | Get Ultra |
FreeFree
No card needed
- Price per ARC review
- $9
- Orders a month
- 10
- Unused orders roll over
- Not included
- Tools included
- Category + Listing
- Books you can track
- 1
Lite$99/yr
$8.25/mo billed annually · Pays for itself at 4 ARCs a month
- Price per ARC review
- $6
- Orders a month
- 20
- Unused orders roll over
- Up to 60
- Tools included
- Category + Listing
- Books you can track
- 1
Pro$290/yr
$24.17/mo billed annually · Most authors start here
- Price per ARC review
- $6
- Orders a month
- 50
- Unused orders roll over
- Up to 150
- Tools included
- Full toolkit
- Books you can track
- 10
Ultra$790/yr
$65.83/mo billed annually · For a full catalog
- Price per ARC review
- $6
- Orders a month
- 150
- Unused orders roll over
- Up to 450
- Tools included
- Full toolkit
- Books you can track
- 40
Your plan sets how many ARCs you can order each month. Reviews arrive as readers pick your book up, and nothing expires at month end.
Your book deserves to be found.
Join the self-published authors using AuthorClimb to rank higher and sell more on Amazon.
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