Structure & Planning Free · AI · genre-aware

Kindle Description Generator

Describe your book in plain language — free AI drafts two genre-aware Amazon descriptions weighted to how recent bestsellers in your category open and pace their copy. Optional cover upload resizes to 1600×2560 px locally.

All tools Title length checker Cover generator KDP formatter
Your title and pitch are sent to our free AI for two store-ready descriptions. Cover uploads stay in your browser — never uploaded.
free AI weights recent buyer trends in this genre so your copy feels current — not generic.

0 / 4500 · 40+ characters required

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About this tool

Your KDP product description is the sales page — it has to hook browsers without sounding like a late-night infomercial. Enter your title, pick a genre, and describe your book in your own words. Kestrel — Free drafts two distinct descriptions (hook-first and character-first) weighted to how recent bestsellers in that genre open and pace their copy. Upload optional cover art to preview your listing and download a KDP-ready 1600×2560 JPEG — resized entirely in your browser.

Planning tools and long-form structure

Novels fail when structure is improvised scene by scene. Beat sheets, chapter planners, and blurb builders help you decide pacing and reader promises before you spend tokens on prose. Pair these tools with an outline in Entangled Text so generation follows a spine.

Plot & structure guides · Write a book with AI

How to use it

  1. Enter your book title and select the closest genre.
  2. Paste a rough description — premise, protagonist, stakes, and tone (40+ characters).
  3. Optionally upload cover art for a local preview and KDP-sized download.
  4. Click Generate descriptions and compare two angles.
  5. Copy your favorite into KDP — edit every word before publishing.

Tips for fiction authors

  • Give Kestrel — Free concrete story material: who wants what, what stands in the way, and what they could lose — not just "a thrilling adventure."
  • Pick the genre readers would search under on Amazon, not the subgenre only your critique group knows.
  • Amazon allows up to 4,000 characters in the description field — aim for 150–350 words of tight, vivid copy.
  • Use the title length checker and cover generator alongside this tool for a complete listing prep workflow.

Common questions

Is this really free?

Yes. Guests get several free generations per device. Sign in to save drafts and use the tool across devices.

How does genre trend awareness work?

Kestrel — Free receives guidance on emotional contract, trope appetite, and pacing patterns common in your selected genre over roughly the last 12–18 months — without copying any specific book.

Is my manuscript uploaded?

No. Only your title, genre, and short pitch are sent for description generation. Cover images stay in your browser unless you choose to download the resized JPEG yourself.

Why two descriptions?

Hook-first opens on tension or situation; character-first opens on voice or longing. Most authors prefer one angle — having both helps you find the right energy faster.

Will the copy sound AI-generated?

The tool explicitly avoids corny phrases, keyword stuffing, and spoiler endings. You should still edit the result to match your voice before publishing.

Related guides

Beta Reader Workflow for AI-Assisted Manuscripts BYOK Cost Control: Budget a Full Novel with API Keys How to Run a Continuity Audit on Your AI-Drafted Novel The Five-Pass Revision Order for AI-Assisted Novels