A Core Web Vital measuring how much content unexpectedly shifts position while a page loads - the "I went to click something and it moved" problem. Target: under 0.1.
An HTML tag (rel="canonical") that tells search engines which URL is the authoritative version when the same or similar content exists at multiple addresses.
Google's three official page-experience metrics: LCP (loading speed), INP (interactivity), and CLS (visual stability). They factor into search rankings, particularly on mobile.
The number of pages a search engine is willing to crawl on your site within a given time - relevant mainly for very large sites where not everything gets indexed.
The emerging practice of optimising content to be found, understood, and cited by AI assistants and answer engines (ChatGPT, Claude, Perplexity, Google AI Overviews) - sometimes called "AI SEO" or "LLM optimisation".
A Core Web Vital measuring how responsive a page feels - the delay between a click/tap and the page visibly reacting. Target: under 200ms.
A mathematical measure of overlap between two sets - Crawley uses it to compare word-shingles between pages and flag near-duplicate content.
A Core Web Vital measuring how long the largest visible element (usually a hero image or heading) takes to render - what people perceive as 'the page has loaded'. Target: under 2.5 seconds.
An emerging (not yet formally standardised) convention: a plain-text file at a site's root summarising the site for AI assistants, similar in spirit to robots.txt but aimed at content understanding rather than crawl permissions.
Novi's own prioritisation framework: Measurement, Energy, Time, Resource, Immediacy, Cost - each scored 1-10 and summed to produce a priority score. Higher = more significant to act on.
When an HTTPS page loads resources (images, scripts, stylesheets) over plain HTTP - browsers flag this as insecure and may block the resource entirely.
Meta tags that control how a page looks when shared on social media (Facebook, LinkedIn, etc.) - title, description, and preview image.
A page that exists on the site (and is in the sitemap) but has no internal links pointing to it from any other page - harder for search engines and visitors to discover.
A plain-text file at a site's root that tells search engine and other crawlers which parts of the site they may or may not access.
Structured data added to a page (in JSON-LD format) that helps search engines understand its content precisely, unlocking rich results like star ratings, FAQs, and breadcrumbs in search listings.
A text-similarity technique that breaks content into overlapping word sequences ("shingles") to compare documents - used here to detect near-duplicate content across pages.
A file listing all the pages on a site that you want search engines to know about and index.
The internationally recognised standard for web accessibility, defining how to make content usable by people with disabilities. Crawley checks against WCAG 2.1 AA criteria.