KDP Tools on
Every Amazon Page
Instant BSR analysis, niche scoring, compliance checks, and sales estimates without leaving Amazon. Save 10+ hours per week.
See It In Action
Hover over any Amazon book page to see instant BSR analysis and sales estimates
Instant BSR
See sales estimates on hover
Auto-Extract
Format, price, marketplace
One Click
Open full calculator
Niche Analyzer on Search Results
Search any keyword on Amazon and get instant viability scores based on demand, competition, and profitability
Viability Score
0-100% niche rating
Demand Analysis
Based on median BSR
Instant Insights
Competition & profit data
Powerful Features, Zero Hassle
Everything you need to research books faster and smarter
Instant BSR Analysis
See estimated daily sales on any Amazon book page. No more manual calculations or switching tabs.
Niche Analyzer
Analyze Amazon search results instantly. Get viability scores (0-100%) based on demand, competition, and profitability.
One-Click Compliance
Check your KDP metadata for banned keywords directly from your KDP book edit page. Avoid account suspensions.
Auto-Prefill Calculators
All book data (BSR, price, format, marketplace) extracted automatically. Save 10+ hours per week.
Privacy-First
Zero data collection. All processing happens locally on your device. Your data stays yours.
Get Started in 3 Simple Steps
No signup, no configuration, no learning curve
Install Extension
One-click install from Chrome Web Store. No signup or configuration needed.
Visit Amazon
Browse any book page on Amazon.com. The extension activates automatically.
Get Instant Insights
See BSR overlay with sales estimates. Click for full analysis with all data prefilled.
Everything You Need, All in One Place
Frequently Asked Questions
Everything you need to know about the extension
Is the extension really free?
Yes! 100% free forever. No hidden fees, no premium tiers, no credit card required. We believe in supporting indie authors.
Does it collect my data?
Absolutely not. The extension is privacy-first. All processing happens locally on your device. We never collect, store, or transmit your browsing data.
What features does the extension have?
The extension provides 5 powerful features: (1) Instant BSR to sales estimates on book pages, (2) Niche Analyzer with viability scores on search results, (3) One-click compliance checks from your KDP dashboard, (4) Auto-prefilled calculators with all book data, and (5) Quick access to all BookBloom tools.
Which websites does it work on?
The extension works on Amazon.com (and all international Amazon sites like .co.uk, .ca, .de, etc.) and kdp.amazon.com. It automatically detects when you're on a supported page.
How do I install it?
Click the "Add to Chrome" button above. You'll be taken to the Chrome Web Store. Click "Add to Chrome" again, and you're done! The extension works immediately.
Will it slow down my browser?
No. The extension is lightweight and only activates on Amazon and KDP pages. It has zero impact on other websites or your browser performance.
Can I use it with other extensions?
Yes! BookBloom works perfectly alongside other extensions. It's designed to be non-intrusive and compatible with all popular author tools.
Join 10,000+ Authors Using BookBloom
Install the extension now and start analyzing books faster. No signup, no credit card, 100% free forever.