For self-published authors · by Harmony Publishing
Turn your book description into one AI actually recommends
Readers now ask ChatGPT and Perplexity what to read next. Paste your description below and get an AI-optimized rewrite — genre and comp titles up front, real keywords woven in, and an outcome-led hook that gets you recommended.
7
Proven rules for AI-readable descriptions, applied automatically.
0-100
AI-readability score so you know exactly where you stand.
3 free
Optimizations on us — no card required to try it.
How it works
How to use BookBlurb
Paste your current description
Grab the blurb from your Amazon draft, cover, or a rough paragraph. 100 to 2,000 characters works best.
Optimize
The 7-rule engine rewrites it: genre and comp titles up front, keywords woven in, an outcome-led hook, clean structure.
Check your AI-readability score
A 0-100 score plus keyword suggestions with real search data. Below ~60, readers and AI engines will struggle.
Iterate and publish
Run as many versions as you want on Pro, pick the winner, ship it — then publish with Harmony, 100% royalties.
Why BookBlurb
Why authors and publishers use BookBlurb
✍️ For self-published authors
- ✓Your description decides the click — readers and AI both judge the book by it
- ✓No more blank blurb box or seven drafts from scratch
- ✓Know exactly why a version is weak (score + notes), not just "try again"
- ✓3 free optimizations — test it with zero commitment
🏢 For publishers and author services
- ✓Ship polished descriptions for every client without per-blurb freelancers
- ✓Agency plan: bulk and multi-book mode plus white-label reports
- ✓Consistent quality across a whole catalog
- ✓Keyword suggestions built in — no separate keyword tool needed
Is it really that good? An honest comparison
Fair question. Here's how BookBlurb stacks up against the real alternatives — including the free ones.
| Option | Cost | What you get | The catch |
|---|---|---|---|
| Asking ChatGPT/Claude | Free or $20/mo | A blurb, if you prompt it well | Generic output, no score, no keywords, inconsistent format, your text goes to a third party |
| Generic AI copy tools (Jasper, Copy.ai) | $39-$49/mo | General marketing copy | Not built for books; no AI-readability engine; 4-10x BookBlurb's price |
| Publisher Rocket-style keyword tools | $129+ one-time | Keyword research | Writes nothing — you still need a blurb writer; one-time desktop software |
| Hiring a blurb writer | $50-$500 per blurb | A human-written blurb | Expensive per book; slow; quality varies by freelancer |
| BookBlurb | $9/mo, or included in Tools Pro at $4.99/mo | Unlimited optimized descriptions, AI-readability score, keyword suggestions, book-specific engine | None hidden — try 3 free runs before paying anything |
Honest answer: ChatGPT can produce a decent blurb if you're a skilled prompter. What it won't give you is a scored, keyword-backed, book-specific rewrite every single time — and it certainly won't do it for a catalog of books. That's the gap BookBlurb fills, at a price below a single freelancer blurb.
FAQ
Is BookBlurb free to try?
Yes — 3 free optimizations, no card required. Upgrade only when you need unlimited runs and the AI-visibility check.
How is the AI-readability score calculated?
A 7-rule engine scores how well an AI system (and a skimming reader) can understand your book: clear genre, comp titles, outcome-led hook, keyword presence, structure, and specificity. Below 60 usually means a rewrite will lift clicks.
Does BookBlurb replace keyword research tools?
For descriptions, yes — keyword suggestions come built into every optimization. For full Amazon listing SEO (7 keywords, backend fields), a dedicated tool still helps, but the description is where readers convert.
Can I use it for multiple books or clients?
Yes. The Agency plan ($29/mo) adds bulk and multi-book mode plus white-label reports — built for publishers and author-service agencies.
What if I want to publish the book after?
That's the natural next step. Harmony Publishing handles editing, cover design, formatting, printing, and global distribution — you keep 100% of rights and royalties.
Simple, honest pricing
Start free. Upgrade when you need unlimited optimizations.
Free
$0
Try it on your next launch
- ✓3 optimizations
- ✓AI-readability score
- ✓Before/after preview
Pro
$9/mo
For active self-published authors
- ✓Unlimited optimizations
- ✓AI-visibility check
- ✓Keyword suggestions
Agency
$29/mo
For publishers & author services
- ✓Everything in Pro
- ✓Bulk / multi-book mode
- ✓White-label reports