Il mago che reagisce al concetto di spazio vettoriale e relazioni tra concetti per AI

The Technical SEO Checker: Full Guide and Checklist

Our Technical SEO Checker gives you a fast, reliable snapshot of your page’s crawlability, indexability, and social/UX metadata, with an actionable, human‑readable report you can share or download.

  • What you get: a category score, per‑check status (Pass / Warn / Fail), and detailed notes with concrete values (e.g., title length, header values, JSON‑LD snippets, OG image URL).
  • Who it’s for: founders, marketers, bloggers, agency owners, and developers who want a simple, trustworthy technical check, or to benchmark competitors.

How It Works

How does the whole process work? Get in touch with me and I will perform a full SEO and GEO check on your domain and the ones of your competitors! This will give you a complete overview on what’s your positioning and how you can improve it. You would be surprised to see how many of my customers want to rank on AI but have misconfigurations on their basic websites!

What To Expect From The Report

I check all of the available SEO metrics for you! Alongside of the recovered content I show you a detailed PASS / WARN / FAIL scoring system, with detailed descriptions on why that check scored this way, and actionable insights to improve page content.

The whole page receives an overall score, as well as each category of checks, and the report can be downloaded at the end of the run.

Each check includes probes for:

  • Redirects check
  • Indexing & Robots
  • Meta Tags
  • Preview formats
  • Headings and Document Hierarchy
  • Open Graph & Twitter Card
  • Structured Data (JSON‑LD)
  • Links & Images
  • Performance
  • Security
  • Progressive Web App readiness
  • Internationalization
  • Favicon check

The Complete Checklist (and Why Each Item Matters)

Indexing & Robots

  • robots.txt present: Ensures you have a file at /robots.txt to guide crawlers (and avoid accidental blocking).
  • Path allowed by robots: Confirms your page isn’t blocked by robots.txt or meta/HTTP robots directives.
  • Indexable (no noindex): Flags any “noindex” signal in headers or meta that would prevent indexing.
  • Canonical tag and self‑reference: Checks canonical presence and whether it correctly points to the current page to reduce duplicate signals.

Meta Tags

  • Title length: Verifies your <title> length is within recommended limits for visibility and CTR.
  • Meta description length: Ensures your <meta name="description"> is present and within a sensible length range for SERP snippets.

Headings and Document Hierarchy

  • Top H1 check for clarity to users and crawlers.
  • Presence and count of H2 and H3 tags for content structure and subsections parsing.
  • H4 supported for complex pages

Open Graph & Twitter Cards

  • OG: title: Controls how your page title appears when shared on social platforms.
  • OG: description: Adds context to social link previews for better engagement.
  • OG: image (HTTPS recommended): Drives clicks with a visual preview; HTTPS improves reliability and trust.
  • Twitter card: Enables Twitter-specific preview formats (e.g., summary_large_image).
  • OG: additional tags: Surfaces og:url, og:site_name, og:type for more consistent previews.

Structured Data (JSON‑LD)

  • JSON‑LD present: Detects and surfaces structured data snippets like Blog Articles and Products.
    Why it matters: eligibility for rich results; clearer content understanding by search engines.

Links & Images

  • Images have alt text (ratio): Improves accessibility and image SEO; I calculate the proportion of images with non‑empty alt attributes.
  • Internal links present: Encourages context and crawl paths to key pages, improving discovery and topical clustering.

Performance

  • HTML size: Keeps baseline payload reasonable to reduce Time‑to‑First‑Byte and rendering overhead.
  • Blocking scripts in head: Flags synchronous scripts in <head> that can delay rendering; prefer defer/async.
  • Stylesheets in head: Encourages sensible CSS loading strategy (bundling/critical CSS) to reduce render blocking.

PWA Readiness

  • Web manifest: Provides app metadata (name, icons) for add‑to‑home‑screen and richer UX.
  • Theme color: Colors browser UI elements for branding and better perceived polish.
  • Icons present (incl. favicon): Ensures devices can display crisp icons in various contexts.

Internationalization

  • html[lang]: Helps assistive technologies and search engines understand language/locale.
  • hreflang links: Indicates language/region alternatives so the correct version appears in regional SERPs.

Questions, Help, Next Steps

  • Want help fixing the warnings? I can of course implement the improvements for you.
  • Need a deeper audit (Core Web Vitals, Lighthouse, accessibility, or multi‑page crawl)? Let’s talk about it.
  • Contact: https://www.flowcomputers.eu/contact

Build fast with confidence, and avoid shipping pages that search engines can’t index or users can’t share properly.