Henry Harvin®
Henry Harvin® is an education and training company that teaches digital skills, including digital marketing, to learners and corporate teams. Its team writes Spider's guides on technical SEO, on-page SEO, content and AI search.
As published by Henry Harvin®.
About Henry Harvin®
Henry Harvin® is an Indian education and training company offering certification courses, corporate training and college programmes, with offices in India, the USA, the UAE and the UK.
Guides by Henry Harvin® (39)
BasicsThe complete SEO audit checklist
A practical SEO audit checklist: crawlability, on-page SEO, content, speed, mobile, links, structured data and AI search, in the order to fix them.
2 min read
AI searchEntity SEO: how to help Google and AI understand your brand
Entity SEO helps Google and AI tools recognise your brand. Learn Organization markup, sameAs links, consistent details and when to use Wikidata.
4 min read
AI searchHow Google AI Overviews choose which sites to cite
What Google has said publicly about how AI Overviews pick sources, why no special markup is needed, and how to control snippets with nosnippet.
3 min read
AI searchHow to make your website appear in ChatGPT, Perplexity and Google AI Overviews
How to get your website cited by ChatGPT, Perplexity, Gemini and Google AI Overviews: crawler access, answer-first content and brand mentions.
2 min read
AI searchHow to track your brand in ChatGPT, Perplexity and Gemini
A simple monthly method to track your brand in ChatGPT, Perplexity and Gemini: build a question set, log mentions and citations, and note competitors.
4 min read
AI searchWhat is generative engine optimization (GEO)?
What generative engine optimization (GEO) means, how it differs from SEO and overlaps with it, and which changes actually help AI assistants cite you.
4 min read
AI searchWhat is llms.txt and how do you create one?
llms.txt is a short Markdown file that tells AI tools what your site is and which pages matter. The format, a full example and how to publish it.
2 min read
ContentContent decay: why old pages lose traffic and how to refresh them
Why pages that once ranked well slowly lose traffic, how to spot content decay in Search Console, and a step-by-step process to refresh or retire them.
3 min read
ContentHow to do keyword research (step by step)
A practical keyword research process: find real search terms, judge search intent, read volume and difficulty with care, and map each keyword to one page.
3 min read
ContentHow to earn backlinks without buying them
Safe ways to earn backlinks: linkable assets, digital PR, partner and association links, broken link building, and what Google's link spam policies forbid.
4 min read
ContentHow to write content that AI assistants quote
How to write pages that ChatGPT, Perplexity and AI Overviews quote: answer-first passages, question headings, clear definitions, tables and sourced facts.
3 min read
ContentWhat is E-E-A-T and how do you show it on your website?
E-E-A-T means experience, expertise, authoritativeness and trust. Learn what Google says about it and the pages and details that show it on your site.
3 min read
ContentWhat is keyword cannibalization and how do you fix it?
What keyword cannibalization is, when it really hurts rankings, how to find it in Google Search Console, and how to merge, redirect or differentiate pages.
3 min read
ContentWhat is thin content and how much content does a page need?
What thin content is, why there is no magic word count, how Google judges helpful content, and how to fix thin, placeholder and hard-to-read pages.
3 min read
On-page SEOHeadings and the H1: how to structure a page for SEO
How to use the H1 and H2–H6 headings so search engines, screen readers and AI assistants understand your page, with good and bad examples.
1 min read
On-page SEOHow to write a meta description that gets clicks
What a meta description is, the ideal length, why Google rewrites some, and a simple formula with examples for descriptions that earn clicks.
2 min read
On-page SEOHow to write a title tag for SEO
The title tag is one of the strongest on-page SEO signals. The ideal length, a proven format, why Google rewrites titles, and common mistakes.
1 min read
On-page SEOHow to write image alt text for SEO and accessibility
What image alt text is, why it matters for screen readers and Google Images, how to write good alt text, and when an image should have empty alt.
3 min read
On-page SEOInternal linking: how to help Google find and rank your pages
How internal links help Google find and understand your pages, with practical advice on anchor text, hub pages, orphan pages and click depth.
4 min read
Technical SEOHow to create SEO-friendly URLs
How to create SEO-friendly URLs: readable words, hyphens, lowercase, short paths, fewer parameters, one www version, and redirects when URLs change.
3 min read
Technical SEOHow to create an XML sitemap and submit it to Google
How to build an XML sitemap, the limits and tags that matter, how to submit it to Google and Bing, and how to fix common sitemap errors.
2 min read
Technical SEOHow to find and fix redirect chains and broken links
Redirect chains slow pages and broken links waste visitors and crawling. How to find both with a site crawl and fix them properly.
2 min read
Technical SEOHow to migrate a website without losing rankings
A step-by-step site migration plan: redirect maps, Google's Change of Address tool, launch-day checks and what to monitor in the weeks after moving.
4 min read
Technical SEOHreflang tags: how to show the right language version
How hreflang tags tell Google which language or regional page to show, with en-IN and Hindi examples, correct codes and the errors that break them.
4 min read
Technical SEOJavaScript SEO: can Google see content rendered by JavaScript?
How Google crawls and renders JavaScript, why links must use a href, when to choose server-side rendering, and how to test what Google sees.
4 min read
Technical SEOMobile-first indexing: what it means for your site
What mobile-first indexing means, why your mobile pages need the same content as desktop, and how to set the viewport and fix fixed-width layouts.
4 min read
Technical SEOWhat are soft 404 errors and how do you fix them?
Learn what a soft 404 error is, why Google flags pages that return 200 but look empty or missing, and how to fix each case with a 404, 410, 301 or content.
4 min read
Technical SEOWhat does the noindex tag do and when should you use it?
Learn what the noindex tag does, which pages should carry it, how it differs from robots.txt and nofollow, and the mistakes that drop good pages.
4 min read
Technical SEOWhat is a canonical tag and when should you use one?
A canonical tag tells Google which URL is the main version of a page. When to use one, how to add it, and the mistakes that drop pages.
2 min read
Technical SEOWhat is crawl budget and when does it matter?
What crawl budget is, why Google says most sites never need to worry about it, the signs a large site has a problem, and the fixes that work.
4 min read
Technical SEOrobots.txt explained, including AI crawlers
How robots.txt works, the rules Google follows, mistakes that hide pages from search, and how to allow or block AI crawlers like GPTBot.
2 min read
PerformanceHow to improve Core Web Vitals (LCP, INP and CLS)
What LCP, INP and CLS measure, Google's thresholds, and the fixes that improve each, from image loading to long JavaScript tasks.
2 min read
PerformanceHow to optimise images for faster pages (WebP, AVIF, sizes, lazy loading)
How to make images load fast: choose WebP or AVIF, serve the right size with srcset, set width and height, lazy-load wisely and fix broken images.
4 min read
PerformanceHow to reduce server response time (TTFB)
Why time to first byte matters, and how to cut it with caching, a CDN and HTTP/2, plus lighter HTML, fewer third-party scripts and faster fonts.
4 min read
Structured dataHow to add structured data (JSON-LD) to your website
Structured data helps search engines and AI assistants understand your pages. Which Schema.org types matter, how to add JSON-LD and test it.
2 min read
Structured dataHow to fix structured data errors and warnings
How to find and fix structured data problems: JSON-LD syntax errors, missing required properties, Search Console reports and breadcrumb markup.
4 min read
Structured dataHow to optimise course pages for Google (with Course structured data)
How to optimise course pages for Google: what to put on the page, how to add Course and CourseInstance markup, and which course rich results still exist.
4 min read
SocialOpen Graph tags: make shared links look right
Open Graph and X card tags control how shared links look on LinkedIn, WhatsApp, Facebook and X. The tags and image sizes to use.
2 min read
SecurityHTTPS and security headers: what matters for SEO
HTTPS is a Google ranking signal and security headers protect visitors. What each header does, safe starting values and how to add them.
2 min read