Question 1

What is an Amazon book description formatter?

Accepted Answer

An Amazon book description formatter writes your book description in the HTML that KDP accepts, so bold text, headings and lists show on your Amazon page.

This one also formats it for Amazon Editorial Reviews, Kobo and Barnes & Noble.

Question 2

What HTML does KDP allow in a book description?

Accepted Answer

KDP allows
,

, , , , ,

to
,
,
and
in a book description.
to
are not supported.

Question 3

Does the 4,000-character limit include HTML?

Accepted Answer

Yes, KDP's 4,000-character limit for a description counts the HTML tags.

The word test is 4 characters, and in bold it's 11.

Question 4

How do I fix "Description may not contain invisible characters"?

Accepted Answer

Paste your description into the formatter and copy the HTML it gives you.

The error comes from hidden characters in text pasted from a document, and the formatter removes them.

Question 5

Can I use symbols like ✓ and ★ in an Amazon description?

Accepted Answer

Yes, text symbols like ✓, ★, ◆ and ① show as text, and none of them is an emoji in Unicode's data.

KDP doesn't accept emojis, so the formatter flags any character that shows as a picture.

Question 6

How long can Amazon Editorial Reviews be?

Accepted Answer

A print book takes up to 5 reviews of 4,000 characters each, 20,000 in all, and a Kindle book takes 1 review of up to 20,000.

From the Author, From the Inside Flap and From the Back Cover take 8,000 characters each, and About the Author 2,000, with the HTML counted.

Question 7

Why does Kobo say "Sorry, you can't use HTML"?

Accepted Answer

Kobo's Synopsis box takes formatted text, not HTML code.

Pick Kobo in the formatter and copy the formatted text: bold, italics, underline and lists paste straight in.

Question 8

What formatting does Barnes & Noble allow in a description?

Accepted Answer

B&N Press doesn't publish rules for the description.

Its book pages show paragraphs, bold, italics and line breaks, so the formatter keeps those and turns headings and lists into lines.

Question 9

Where does Amazon cut the description with Read more?

Accepted Answer

On an Amazon book page measured on September 26, 2026, the description was cut at about 280 pixels on a laptop and 500 on a phone: roughly 14 and 25 lines.

Question 10

How many times can I use Improve here?

Accepted Answer

Improve here runs up to 8 times a day for each visitor, with a daily cap for everyone together.

The cap keeps it free for everyone, and stops bots from using it up.

Question 11

What happens when Improve here reaches its limit?

Accepted Answer

The formatter says so, and gives you the same ask to copy into your own AI, with your description and the store's rules in it.

That way has no limit.

Question 12

Is the Amazon book description formatter free?

Accepted Answer

Yes, the Amazon book description formatter is free, with no sign-up.

Everything but Improve here runs in your browser.

Question 13

Who is the Amazon book description formatter for?

Accepted Answer

The Amazon book description formatter is for authors publishing on KDP, Kobo or Barnes & Noble who want a description that looks right and passes each store's checks.

Question 14

Who made the Amazon book description formatter?

Accepted Answer

I did. I'm Navid Moazzez, and the Amazon book description formatter is one of my free tools on navid.me.

Free Amazon Book Description Formatter (+ Kobo and B&N)

Where it goes

Your description

On Amazon

Check and copy

Take it further with your AI