Paste a book's ASIN, ISBN-13, or Amazon product link to see every category it is listed in — the full path from Books down to the most specific subcategory, with a bestseller-list link for each. Each category also shows how many products compete in it and an opportunity score (higher = less competition); the highlighted Best Category is the least-competitive targetable listing when scores are available, usually your primary shelf for ranking and ad targeting. Results export as CSV so you can compare several books side by side.
New here? The category guide explains what an ASIN is and how to work with the results.
Competitor Lens
Paste a book's ASIN to pull every title Amazon recommends alongside it — up to about 10,000 books — grouped by theme. That list is a practical map of your competitive set: who shares your shelf and what angles they use. A run typically takes 30–60 seconds, and the full ASIN list exports as CSV.
Paste a book's ASIN, ISBN-13, or Amazon product link to see the ad keywords Amazon recommends for it — ranked by how dominant each search term is, with the suggested bid and bid range for every match type. Results export as CSV so you can compare several books side by side.
New here? The Amazon Ads guide explains how to put recommended keywords to work.
Category Explorer
Browse Amazon’s full book category tree — no ASIN needed. Expand a category to see its subcategories, how many products compete in each node, and whether it is targetable in Sponsored Products ads. Every node links to its bestseller list, so you can pick a shelf before your book is even listed.
New here? The Category Explorer guide explains what the counts mean and how to choose a subcategory.
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Keyword Forge
Build a starter list of Amazon Sponsored Products keywords from your book’s title, author name, and genre or theme words. Everything runs in your browser — no ASIN or Amazon call needed, so it works for books that aren’t listed yet. The CSV exports in SP bulk-upload shape (Keyword,MatchType,Bid_Cents); fill in your bids before uploading.
New here? The Keyword Forge guide explains how the combinations are built and how to use the CSV.
BearLinks
Create shareable, trackable links for any book: paste an ASIN or ISBN, pick a marketplace and link type, and AuthorBear generates a clean short URL that logs clicks and carries your affiliate tag. Check per-link analytics and generate QR codes for print from the Link List, and manage affiliate tags per marketplace under Settings.