How to Write an Author Bio

An author bio is one of the quietest, most-read paragraphs you will ever write. It lives on the inside back flap, the retailer page, the press release, and the byline. People form opinions about your book before they read a word of it based partly on this paragraph.

The four author bios

The four lengths and uses you need:

1. Book-jacket bio — 30–60 words for the inside back cover.
2. Retailer page bio — 80–120 words for Amazon, Bookshop, and your publisher's page.
3. Press kit bio — 200–300 words, third-person, ready for journalists.
4. Byline — one or two sentences for contributed essays.

The book-jacket bio

The shortest of the four. It lives next to your photo and has approximately five seconds of attention before the reader either flips to the first page or puts the book back.

Structure:

1. One sentence: identity and prior work. Who you are and the book or work that matters most.
2. One sentence: where you live or work. A small grounding detail.
3. A closing line. Often a URL or a hook to the next book.

Example:

Sarah Mendel is the author of three novels, including The Quiet Inheritance, which was named one of the year's best books by NPR. She lives in Portland with her family and a difficult dog. More at sarahmendel.com.

That's 42 words. It's quiet, specific, and earns its space.

The retailer page bio

Slightly longer. You have room to mention themes and prior reception. The reader is closer to deciding whether to buy.

Structure:

1. One sentence: identity and the book they're about to buy.
2. Two sentences: prior work and any genuinely notable reception.
3. One sentence: themes or recurring interests.
4. One sentence: where you live or what you're working on.

Example:

Sarah Mendel is the author of The Quiet Inheritance, a novel about three sisters and the family business they cannot agree on what to do with. Her previous novels, Slow Water and The Map of Our House, were named to the New York Times Notable list. Her work returns repeatedly to questions of inheritance, place, and the small daily compromises of family life. She lives in Portland with her family.

That's 89 words. It tells the prospective buyer what the book is about, why the writer is credible, and what kind of writer she is.

The press kit bio

Longer, third-person regardless of where it appears, and fact-dense. Journalists copy-paste from press kits. Make that easy.

Press kit bios include:

• The book's full title and publisher
• One or two sentences of plot/premise
• Prior books with publishers and reception
• Education or relevant background (if it's a credibility signal)
• Notable publications, awards, and residencies (named, not just listed)
• Where the author lives
• A press contact at the end

The byline

A single sentence or two for contributed essays in magazines and newsletters. It can be very dry:

Sarah Mendel is the author of The Quiet Inheritance (Knopf, 2026). She lives in Portland.

Or slightly more personal:

Sarah Mendel writes novels about family and the small daily compromises that hold families together. Her latest, The Quiet Inheritance, is out in May.

Pick one tone and stay there.

What to include and what to leave out

Include:

• The book or work most relevant to the venue.
• A named award if a stranger would recognize it.
• A named magazine, journal, or paper if it's where you publish.
• Where you live, briefly.
• A URL — one, not four social handles.

Leave out:

• Every book you've ever written, if you have more than three.
• A long list of teaching positions, fellowships, or residencies.
• "Award-winning" — name the award instead.
• "Bestselling" — name the list, with a year if possible.
• "Critically acclaimed" — give the reviewer.
• Pets and children, unless one specific detail genuinely earns its place.

Tone — quiet beats loud

The strongest author bios are quiet. They trust the reader to do the math. A reader who sees "named one of the year's best by NPR" doesn't need "critically acclaimed" added in front of the book's name; that's redundant. A reader who sees "Knopf" doesn't need "major publisher" added; they know.

Quiet bios sound confident. Loud bios sound insecure.

Use the generator

Biography.co's Author Bio Generator produces all four lengths in one pass — book-jacket, retailer page, press kit, and byline — in a quiet, literary tone. It uses only your books, themes, awards, and background; it does not invent reviewers, awards, or publication names.