A reader skims your bio while deciding whether to trust you with a few hours. It has to show you were the right person to write this book, and a life story never does that.
Where does an author bio appear?
In more places than people expect, and each one has its own length. That is the main reason to keep several versions ready rather than trimming one in a hurry every time someone asks.
| Where | Length | What the reader wants from it |
|---|---|---|
| Back cover of a paperback | One or two sentences | A reason to trust the book |
| About-the-author page at the back | Around 150 words | Who you are, and what else you wrote |
| Store author page | Around 150 words | Your other books and where to follow you |
| Guest posts and interviews | Around 50 words | Why you are worth hearing |
| Book proposals | Longer, focused on reach | Why a publisher should back you |
| Talks and podcasts | 30 seconds read aloud | Something a host can say easily |
The about-the-author page belongs in the back matter, after the last chapter. Placed there, it reaches the reader at the moment they have just finished the book and are deciding whether to look for the next one. The proposal bio is a different animal, built around audience and reach, and how to write a book proposal covers it.
What should an author bio include?
Four things, in this order. Everything else is optional.
- Your name, as it appears on the cover. Pen names included.
- The credential that fits this book. For non-fiction, the experience that qualifies you to write it. For fiction, other books, prizes or a relevant past life.
- One human detail. Where you live, what you do when you are not writing, a dog. One, not five.
- Where to find you. A website or a newsletter, written so a reader can type it.
The test for every sentence is whether it makes this particular book more credible or more appealing. A law degree belongs in the bio of a legal thriller and is clutter in the bio of a cookbook.
Should an author bio be in first or third person?
Third person, for almost everything printed. "Maya Lind writes about..." reads as an introduction, and anyone can lift it for a podcast or a festival programme without rewriting.
First person suits a newsletter, a personal website and very informal non-fiction, where the whole book already speaks in your voice. If you use it, keep it on those surfaces and keep the printed version in the third.
How do you write a short author bio?
The one-sentence version is the hardest and the most reused, so start there. It is your name, what you write, and the strongest credential, with no room for anything else.
Example, hypothetical: "Maya Lind is a structural engineer and the author of two books on how bridges fail."
Then grow it to around fifty words by adding the human detail and a pointer:
Example, hypothetical: "Maya Lind is a structural engineer who spent twelve years inspecting railway bridges before writing about them. Her first book explained why old bridges outlast new ones. She lives in a town with too many rivers and sends a monthly letter about engineering failures at mayalind.example."
Every line in that version earns its place. The career is the credential, the first book is proof she finishes things, and the rivers line is the human detail with a small joke in it.
How do you write a long author bio?
The long version, around 150 words, is the short one with room to breathe. Add, in roughly this order:
- Your other books, by title, most relevant first.
- Specific credentials: the job, the years, the publications. Specific beats impressive.
- Why you wrote this book, in a sentence, if the reason is interesting.
- A second personal line, if the first one landed.
- One call to action, at the end, usually your newsletter.
Stop before it becomes a CV. A reader who wants your full history will find your website.
What if you have no credentials?
Then your reason for writing becomes the credential. A first novel needs no qualification beyond the novel. Say what you write and something true about you, and stop:
Example, hypothetical: "Tom Okafor writes crime fiction set on the coast where he grew up. This is his first novel. He works nights, which explains a great deal about chapter nine."
For non-fiction without formal credentials, name the experience instead of a title: years doing the thing, problems solved, the people you have worked with. Never borrow authority you do not have. Readers check, and reviewers mention it.
What should you leave out?
| Leave out | Why |
|---|---|
| "Has always loved writing" | Every author has; it says nothing |
| Your full career history | Only the parts that support this book |
| Every hobby | One detail is charming, five is padding |
| Inflated adjectives about yourself | "Acclaimed" needs a source, or it reads as self-praise |
| Dates that will age | "Recently" and "this year" go stale on the shelf |
| Five social media links | One address the reader can remember |
How do fiction and non-fiction bios differ?
Non-fiction bios sell expertise. The reader is buying an answer, so the bio has to show why your answer is worth more than a search engine's. Lead with the experience, keep the personality to one line.
Fiction bios sell a sensibility. Nobody needs a qualification to write a novel, so the bio's job is tone: it should feel like the books. A dark thriller and a cosy mystery from the same author would ideally have slightly different bios. The book description does the heavy selling; the bio's job is to stop the reader hesitating over who wrote it.
Keeping the bio in step everywhere
A bio changes every time you publish, and it lives in many places: the book file, the store pages, the back cover, the press kit. The version inside the book is the one most often left out of date, because updating it means re-exporting the book.
With the book written in Markdown, the about-the-author page is one short section at the end of the file, with a page break before it so it opens on its own page. In bukpress that break is a line of ---, and the same file produces the PDF of your book and, on the Pro plan, the EPUB, so the new bio lands in both with one edit and one export. The store side is a separate job, covered in book metadata and the launch checklist.
Common questions
How long should an author bio be?
Keep three versions: one sentence, around fifty words, and around 150. The back cover takes the shortest, guest posts the middle one, and the about-the-author page and store pages the longest.
Should I include a photo with my bio?
On store pages and your website, usually yes, because a face builds trust. Inside an ebook it is optional. If you add one, make it recent and clearly lit, and remember that a phone screen shows it small.
Can I use humour in an author bio?
Yes, if your books are funny or warm. One light line is enough. Humour in the bio of a serious book can undercut it, so match the tone the reader expects from the cover.
Should a bio mention sales figures or rankings?
Only if they are true, checkable and still current. A ranking from launch week ages quickly. Prizes, publications and named endorsements last longer.