Book blurb checker
Paste your book description. You get its length against KDP's limit, how long your sentences run, a reading-ease score, and a check for the things KDP's rules don't allow. Nothing is saved.
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Where the rules come from
KDP's help page Write a Book Description: a 4,000-character limit counting HTML tags, and no contact details or URLs, reviews, quotes or testimonials, requests for reviews, time-sensitive promotions, price or availability, spoilers, or emojis. Checked 30 September 2026.
More: How to write a blurb · Covers, blurbs and pricing basics