What is HTTPS?
Encrypted HTTP via TLS, a lightweight ranking signal and a trust requirement. Mixed HTTP resources on HTTPS pages still split signals and trigger browser warnings.
Related terms
Mixed Content
HTTP resources loaded on an HTTPS page. Browsers block or warn on them, breaking assets and trust signals, so audits must catch a single insecure canonical, script, or image.
HTTP Status Code
The numeric response of a URL: 200 success, 301/302 redirects, 404 missing, 410 gone, 500 server error. Audits classify failures by code because each one prescribes a different fix.
Canonical Tag
A hint (rel="canonical") naming the preferred URL when duplicates exist. Only about three in five pages web-wide carry a valid one, so validation must cover target quality and conflicting signals.
Technical SEO
The crawling, indexing, rendering, and performance work that lets search engines reach, understand, and serve your pages. It covers directives, architecture, speed, and structured data rather than words on the page.
Crawling
How search-engine bots discover pages by following links, sitemaps, and directives. If a URL is never crawled, it cannot be indexed no matter how good its content is.
Crawl Budget
The number of pages a search engine will crawl on a site in a given period, driven by server capacity and demand signals. Large or slow sites must spend it on indexable, valuable URLs.