This is the Plain Intelligence resource hub — a free library of interactive SEO tools, guides, AI prompts, templates, checklists, and calculators for anyone doing SEO, GEO, or AI-search work. Everything is free, runs in your browser, and requires no signup. Use the search box to find what you need, or browse by category below.
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Featured free tools
Interactive tool
SEO Meta Tag Generator
Build title tags, meta descriptions, Open Graph, and Twitter Card markup with a live search preview and character counters.
Open tool →Interactive tool
Schema Markup Generator
Generate valid JSON-LD for Article, FAQ, Organization, Local Business, Breadcrumb, and Product schema — copy or download.
Open tool →Interactive tool
Robots.txt Generator
Create a valid robots.txt with crawl rules, sitemap declaration, and one-click controls for AI crawlers like GPTBot and ClaudeBot.
Open tool →Interactive tool
XML Sitemap Generator
Paste a list of URLs and get a valid sitemap.xml instantly — with optional lastmod and download, up to 50,000 URLs.
Open tool →Browse by category
Category
Guides
Curated reading paths through 100+ in-depth articles — AI SEO, GEO/AEO, technical SEO, and content strategy, organized by goal.
Browse guides →Interactive
SEO Quizzes
Four game formats — streak mode, “Would AI cite this?”, Rank the SERP, and a daily challenge. Every answer explains itself and links to the guide behind it.
Take a quiz →Learning path
Learn SEO
The same material arranged as a sequence: six lessons that unlock in order, with progress and XP saved in your browser. No account needed.
Start the track →Category
Prompt Library
Ready-to-use AI prompts for SEO audits, content briefs, schema generation, and GEO analysis — tested, copyable, and free.
Browse prompts →Category
Templates
Copy-and-use working documents: content brief, SEO audit report, metadata planning, and content refresh templates.
Browse templates →Category
Checklists
Interactive, check-off-as-you-go lists for technical SEO, on-page optimization, GEO, and pre-publish QA.
Browse checklists →Category
Calculators
Quick in-browser calculators: reading time, keyword density, and content ROI — paste your text or numbers and go.
Browse calculators →Category
Glossary
Plain-English definitions of AI search and SEO terms — GEO, AEO, RAG, entity SEO, and more, each with its own reference page.
Browse glossary →Category
Chrome Extensions
A short, curated list of the browser extensions we actually use for SEO work — what each does and when to reach for it.
See the list →Media library
Infographics & Reels
Pre-branded 1080×1080 infographic cards and 60-second reels on top search trends — download-ready and free to post. Also see the reels library.
Browse media →New here?
Start Here bundle
The five resources that give you the clearest picture of AI search and modern SEO, in the order we would read them.
Start here →Popular guides to start with
- AI Search Explained: The Complete Beginner’s Guide — the single best starting point.
- Generative Engine Optimization, Explained — how to earn citations in AI answers.
- The Complete Technical SEO Guide — crawling, indexing, and site health end to end.
- Topical Authority — why depth beats volume in modern SEO.
- AI Search Statistics — the numbers behind the shift to AI search.
New tools and resources are added regularly — the newsletter is the easiest way to hear when something new ships.