KDP Metric — Amazon Book Niche Research

Tracking since Jun 5, 2026.

Changelog

• Jun 11, 2026
  description

  KDP Metric is a FREE research tool for Kindle Direct Publishing authors. Open the side panel on any Amazon book search, best-seller list or product page, and it instantly turns the page into clear, honest niche research — so you know whether a niche is worth writing for BEFORE you spend months on a book.
  
  ★ 100% free — no account, no sign-up, no trial, no catch.
  
  WHAT IT DOES
  • A–F Niche Grade — one clear verdict on whether a niche is worth entering, blending demand, competition and how reachable the entry bar is.
  • Strategy Coach — plain-English guidance: the reviews to aim for, the price band or Kindle Unlimited strategy, the rating to hold, and a clear "enter or avoid" call.
  • Competition table — every book scored for how beatable it is, sortable and filterable, with the soft targets surfaced first.
  • Sales & BSR trends — crowdsourced rank and price history that a single page view can't show you.
  • Category targeting — on any book, see its exact sub-categories with a "best pick" flag, plus how many daily sales it takes to reach #1.
  • Keyword Explorer — related keywords from Amazon's own autocomplete, each one click-to-analyse for its real competition.
  • Title Optimizer — paste your working title and see keyword coverage, the proven words you're missing, and length vs the niche norm.
  • Title word cloud, Cover Previewer, book tracking, trending discovery, CSV export and a one-click PDF report.
  • Works across 12 Amazon marketplaces, with light and dark themes.
  
  HONEST BY DESIGN
  Review counts, ratings and prices are real, observed Amazon data. Sales and revenue figures are clearly labelled rough estimates (shown as ranges, never fake precision) — for relative comparison, not income promises.
  
  PRIVATE BY DESIGN
  KDP Metric only reads pages you deliberately open. It never crawls, opens tabs, or runs background requests, and it needs no account. You can OPTIONALLY contribute anonymous public book facts (rank, price, rating, review count) to build the shared trend data — it's off by default and contains no personal information.
  
  KDP Metric is an independent tool and is not affiliated with, endorsed by, or sponsored by Amazon.

  KDP Metric is a FREE research tool for Kindle Direct Publishing authors. Open the side panel on any Amazon book search, best-seller list or product page, and it instantly turns the page into clear, honest niche research — so you know whether a niche is worth writing for BEFORE you spend months on a book.
  
  ★ 100% free — no account, no sign-up, no trial, no catch.
  
  WHAT IT DOES
  • A–F Niche Grade — one clear verdict on whether a niche is worth entering, blending demand, competition and how reachable the entry bar is.
  • Strategy Coach — plain-English guidance: the reviews to aim for, the price band or Kindle Unlimited strategy, the rating to hold, and a clear "enter or avoid" call.
  • Competition table — every book scored for how beatable it is, sortable and filterable, with the soft targets surfaced first.
  • Sales & BSR trends — crowdsourced rank and price history that a single page view can't show you.
  • Category targeting — on any book, see its exact sub-categories with a "best pick" flag, plus how many daily sales it takes to reach #1.
  • Keyword Explorer — related keywords from Amazon's own autocomplete, each one click-to-analyse for its real competition.
  • Title Optimizer — paste your working title and see keyword coverage, the proven words you're missing, and length vs the niche norm.
  • Title word cloud, Cover Previewer, book tracking, trending discovery, CSV export
  • Works across 12 Amazon marketplaces, with light and dark themes.
  
  HONEST BY DESIGN
  Review counts, ratings and prices are real, observed Amazon data. Sales and revenue figures are clearly labelled rough estimates (shown as ranges, never fake precision) — for relative comparison, not income promises.
  
  PRIVATE BY DESIGN
  KDP Metric only reads pages you deliberately open. It never crawls, opens tabs, or runs background requests, and it needs no account. You can OPTIONALLY contribute anonymous public book facts (rank, price, rating, review count) to build the shared trend data — it's off by default and contains no personal information.
  
  KDP Metric is an independent tool and is not affiliated with, endorsed by, or sponsored by Amazon.

• Jun 11, 2026
  host_permissions

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  *://*.amazon.com/*, *://*.amazon.co.uk/*, *://*.amazon.ca/*, *://*.amazon.de/*, *://*.amazon.fr/*, *://*.amazon.es/*, *://*.amazon.it/*, *://*.amazon.co.jp/*, *://*.amazon.com.au/*, *://*.amazon.in/*, *://*.amazon.sg/*, *://*.amazon.ae/*, *://completion.amazon.com/*, *://completion.amazon.co.uk/*, *://completion.amazon.ca/*, *://completion.amazon.de/*, *://completion.amazon.fr/*, *://completion.amazon.es/*, *://completion.amazon.it/*, *://completion.amazon.co.jp/*, *://completion.amazon.com.au/*, *://completion.amazon.in/*, *://completion.amazon.sg/*, *://completion.amazon.ae/*, https://api.kdpmetric.com/*

Permissions & access

Permissions

sidePanelstorageactiveTabscripting

Host access

*://*.amazon.com/*, *://*.amazon.co.uk/*, *://*.amazon.ca/*, *://*.amazon.de/*, *://*.amazon.fr/*, *://*.amazon.es/*, *://*.amazon.it/*, *://*.amazon.co.jp/*, *://*.amazon.com.au/*, *://*.amazon.in/*, *://*.amazon.sg/*, *://*.amazon.ae/*, *://completion.amazon.com/*, *://completion.amazon.co.uk/*, *://completion.amazon.ca/*, *://completion.amazon.de/*, *://completion.amazon.fr/*, *://completion.amazon.es/*, *://completion.amazon.it/*, *://completion.amazon.co.jp/*, *://completion.amazon.com.au/*, *://completion.amazon.in/*, *://completion.amazon.sg/*, *://completion.amazon.ae/*, https://api.kdpmetric.com/*

Screenshots