qr-codes
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Can I Put Links and QR Codes in My KDP Book?
Yes, KDP allows some links in a book, such as your website or a free checklist, but not web forms that collect customer information. What to link and how.
Start with the free checklist
The checklist is the 12 steps I follow for every book I publish, from choosing a profitable niche with keyword research to setting up the marketing machine. It is free, and you get it straight away.