Writing an Amazon book description that converts (and formatting it correctly)

Your book description is a sales page, not a synopsis. Its job is to make a browsing reader want the experience of the book — not to summarise the plot, and definitely not to reveal the ending.

Open with a hook of one or two lines that could stand alone. Amazon truncates the description after roughly 180 characters behind a 'read more' link on mobile, so everything that must be read has to land above that fold.

Then give three to five short paragraphs of escalating stakes for fiction, or problem-then-promise for non-fiction. Keep paragraphs to two or three sentences; dense blocks do not get read on a phone.

Close with a call to action. 'Scroll up and start reading today' feels crude written down and measurably works.

Formatting is where most descriptions fall over. KDP's description field accepts a limited set of HTML: <br>, <p>, <b>, <i>, <u>, <h4> through <h6>, <ol>, <ul>, <li>, and <strong> and <em>. Anything else — inline styles, font tags, tables, images, links — is stripped or causes an error.

Use <h4> sparingly for a single mid-description hook line, bold for two or three critical phrases, and lists only for non-fiction benefit bullets. A description in which everything is bold reads as nothing being bold.

The limit is 4,000 characters including HTML tags. Aim for 1,200 to 2,000 characters of visible text; longer descriptions perform worse in almost every test.

Never include review quotes you cannot substantiate, competitor titles, pricing, or promotional claims about availability — all of these violate KDP content guidelines and can hold a book in review.

Write the description before the final manuscript pass. If you cannot describe the book compellingly in 200 words, that is usually a signal about the book, not about the copy.