Online proofreaders

Categories & BISAC · Vappingo KDP Categories for Non-Fiction: The Complete Subject Map A subject-by-subject guide to the most valuable Amazon KDP category placements for non-fiction — with specific guidance on business, self-help, health, finance, and instructional books, and how to use your three slots across multiple subject hierarchies. 10-minute read Intermediate In this article … Read more

Categories & BISAC · Vappingo KDP Categories for Fiction: The Complete Genre Map A genre-by-genre guide to the most valuable Amazon KDP category placements for fiction — where real bestseller lists exist, where competition is achievable, and how to use your three slots across different genre branches. 11-minute read Intermediate In this article How fiction … Read more

KDP Categories · Vappingo Analysing KDP Category Competition: How to Find Categories You Can Actually Win Not all categories are equally competitive, and your goal is to find the ones where your current or projected sales velocity can rank you visibly. Here’s the complete framework for assessing category competition before you commit your slots. 9-minute … Read more

KDP Categories · Vappingo How Many KDP Categories Can You Choose? The Current Rules Explained Confusing advice about KDP category limits is everywhere. Here’s the accurate, up-to-date answer: what the limit is, what changed in 2023, how to maximise your placements within the rules, and whether you can ever get more than three. 7-minute read … Read more

KDP Categories · Vappingo KDP Ghost Categories: What They Are, Why They Exist, and How to Avoid Them Roughly 27% of categories available in the KDP selector lead nowhere. Placing your book in a ghost category wastes a slot, earns you no visibility, and can never generate a bestseller badge. Here’s everything you need to … Read more

Categories & BISAC · Vappingo KDP Categories and BISAC Codes Explained What BISAC codes are, how they relate to Amazon’s category system, when the old system changed, and what still matters about BISAC for authors distributing beyond Amazon. 9-minute read Beginner In this article What BISAC codes are The old BISAC system in KDP The … Read more

KDP Categories · Vappingo How to Choose Amazon KDP Categories: The Complete 2026 Guide Your category choices determine where Amazon shows your book, whether you can earn a bestseller badge, and how many readers ever discover you organically. This guide covers everything you need to choose the right categories and use them strategically. 20-minute read … Read more

Keyword Research · Vappingo KDP Keyword Research Checklist The complete pre-publication keyword checklist — everything to verify before you hit publish, plus the ongoing maintenance schedule that keeps your keywords working long after launch. 10-minute read Beginner · Intermediate   In this article Phase 1: Research checklist Phase 2: Selection checklist Phase 3: Entry checklist … Read more

Keyword Research · Vappingo Common KDP Keyword Mistakes and How to Fix Them The most damaging keyword errors across every experience level — with a specific fix for each one and an honest assessment of the impact each mistake has on discoverability. 11-minute read Beginner · Intermediate In this article Using single-word keywords Repeating title … Read more

Keyword Research · Vappingo C3 · Article 3.23 How to Write a Keyword-Rich Book Description Your description is indexed by Amazon’s algorithm as well as read by potential buyers. Here is how to make it work for both — without sacrificing conversion quality for keyword density. 9-minute read Intermediate In this article How descriptions are … Read more

Keyword Research · Vappingo International Keywords: Ranking on Non-US Amazon How KDP keyword strategy differs between Amazon.com, Amazon.co.uk, and other international marketplaces — and what UK and international authors specifically need to know. 10-minute read Intermediate In this article One keyword set, multiple marketplaces Spelling differences that matter Keyword strategy for UK authors UK-specific keyword … Read more

Keyword Research · Vappingo C3 · Article 3.21 Series Keywords: How to Rank an Entire Series How to build a keyword strategy that drives discoverability across every book in a series — not just the first one. 10-minute read Intermediate Updated 2025 In this article How series keyword strategy differs Book one: the acquisition focus … Read more

Keyword Research · Vapping Prohibited KDP Keywords: What Not to Use The complete list of keyword types Amazon prohibits — and the specific consequences of using them. 8-minute read Beginner Updated March, 2026 In this article Why Amazon prohibits certain keywords The prohibited keyword categories Consequences of using prohibited keywords Grey areas Legitimate alternatives Amazon’s … Read more

Keyword Research · Vappingo How Many Keywords Does a KDP Book Need? Seven fields, 350 characters — should you use all of them? And are there ways to extend your keyword coverage beyond the official limits? 8-minute read Beginner Updated March, 2026 In this article The direct answer Why you should use all seven fields … Read more

Keyword Research · Vappingo KDP Keywords for Low-Content Books Journals, planners, notebooks, colouring books, and activity books have their own keyword vocabulary. Here is the complete strategy for low-content and no-content KDP publishing. 10-minute read Beginner · Intermediate Updated March, 2025 In this article Why low-content keywords are different The gifting search pattern Journals and … Read more

Keyword Research · Vappingo KDP Keywords for Non-Fiction: What Actually Works The keyword categories that drive non-fiction discoverability — with examples for business, self-help, health, finance, and instructional books. 11-minute read Intermediate Updated 2026 In this article How non-fiction readers search The five non-fiction keyword types Business and career keywords Self-help and personal development Health, … Read more

Keyword Research · Vappingo C3 · Article 3.10 KDP Keywords vs Categories: What’s the Difference? Keywords and categories both affect discoverability on Amazon — but they work completely differently. Understanding the distinction helps you use both strategically rather than letting them duplicate each other’s work. 10-minute read Beginner · Intermediate Updated 2025 In this article … Read more

Keyword Research · Vappingo C3 · Article 3.9 How to Spy on Competitor Keywords The methods for inferring what keywords your best-selling competitors are using — and how to use that intelligence to find the gaps your own keyword strategy should target. 10-minute read Intermediate Updated 2025 In this article Why competitor research matters Finding … Read more

Keyword Research · Vappingo C3 · Article 3.8 KDP Keyword Research Tools Compared An honest comparison of the keyword research tools available to KDP authors — free and paid — with a clear recommendation for each type of author and publishing situation. 12-minute read Beginner · Intermediate Updated 2025 In this article What a keyword … Read more

Keyword Research · Vappingo C3 · Article 3.7 How to Find Keywords Using Amazon Autocomplete Amazon’s own search bar is one of the best free keyword research tools available to KDP authors. Here is the complete methodology for extracting maximum value from it. 9-minute read Beginner Updated 2025 In this article Why autocomplete is valuable … Read more

Keyword Research · Vappingo C3 · Article 3.6 Long-Tail Keywords for KDP: Why Niche Beats Broad The case for specific, multi-word keyword phrases over broad generic terms — with the data on why long-tail targeting produces better rankings, better conversions, and better readers for most KDP authors. 10-minute read Beginner · Intermediate Updated 2025 In … Read more

Keyword Research · Vappingo C3 · Article 3.5 How to Choose Your 7 KDP Backend Keywords The complete decision-making process for selecting which seven keyword phrases to use — from building your research pool to making the final cuts based on specificity, competition, and relevance. 11-minute read Beginner · Intermediate Updated 2025 In this article … Read more

Keyword Research · Vappingo C3 · Article 3.4 The 7 KDP Backend Keyword Fields Explained Exactly how the seven keyword fields in KDP work, the rules that govern them, and a field-by-field strategy for filling all 350 characters to maximum effect. 10-minute read Beginner · Intermediate Updated 2025 In this article The seven fields: an … Read more

Keyword Research · Vappingo C3 · Article 3.3 How Amazon’s Search Algorithm Uses Keywords What Amazon’s A10 algorithm actually does with your keywords, how it weighs different metadata sources, and why conversion rate ultimately matters more than keyword stuffing. 10-minute read Intermediate Updated 2025 In this article How the A10 algorithm works Relevance signals it … Read more