Knowledge Base — 蔚蓝 Blue

Start here: where to sell

Pick a marketplace and get the basics right before spending money.

Where to sell first: Amazon vs Etsy vs ShopifyA straight comparison of Amazon, Etsy and Shopify for a brand-new seller, and which one to start with.
Shopify cold start: a checklist to your first saleThe 12 things to fix on a new Shopify store before you spend a cent on ads.

Coming soon: A beginner's cost breakdown for launching a store, How to read your first month of data

Titles, bullets, descriptions and A+ content that sell.

Write a full Amazon listing in 20 minutes with AIA repeatable 20-minute AI workflow that takes you from blank page to a ready-to-publish Amazon listing.
Amazon bullet points that convert: the 5-line formulaThe structure behind bullets that sell, plus a before-and-after example you can copy.
10 AI prompts for product descriptionsTen reusable prompt templates for writing product descriptions in different tones and frameworks.
Amazon A+ content: what it is and how to write itA beginner's guide to Amazon A+ content: why it lifts conversion, the module structure, and how to write the copy.

Coming soon: Titles that rank: the 5 patterns that work, Rewriting a weak listing, line by line

Find what buyers actually type, and pick the right tools.

Amazon keyword research for beginners (free method)A free, practical method to find the keywords Amazon shoppers actually type — no paid tools required.
Best AI tools for Amazon listing writers in 2026What AI writing tools are actually good at for Amazon listings in 2026, and how to combine them.

Coming soon: Backend keywords: the complete checklist, Reading search-term reports

Images and scenes that make a product look like page one.

7 AI prompts for product lifestyle imagesSeven scene patterns and prompts that make AI product lifestyle images look real and clickable.

Coming soon: A+ image sizing and layout guide, Turning one photo set into six listing images

Fast, calm replies that protect your rating.

Amazon customer service scripts (with AI prompts)Ready-to-use reply templates for shipping delays, damage, refunds and bad reviews, plus the AI prompt to adapt them.

Coming soon: Turning a bad review into a repeat customer, Refund and return policy templates

Free, no signup.

Free Tools for Online SellersFree, no-signup tools for Amazon and Shopify sellers: an FBA profit calculator and a listing keyword helper.
Free FBA Profit CalculatorA free Amazon FBA profit calculator. Enter your price and costs to see profit per unit, margin and ROI.
Free Listing Keyword HelperTurn a product name and a few modifiers into keyword phrases, a backend keyword string and a title skeleton. Free, no signup.