Full Technical Glossary (SEO & AI Visibility)
Welcome to the official glossary of DIMITROV.code. This guide provides detailed explanations for every check performed by our audit engine.
All Technical Terms
65 terms
Site uses HTTPS
Verifies that the website has an active SSL/TLS certificate to encrypt the connection between the user and the server.
HTTP automatically redirects to HTTPS
Ensures that all insecure HTTP requests automatically redirect users to the secure HTTPS version.
Page returns 200
Confirms that the scanned page loads successfully without server errors (5xx) or missing content (404).
Short redirect chain
Tracks whether a URL goes through too many intermediate redirects, which slows down bots and users.
robots.txt is present
Checks for this text file in the root directory, which provides baseline instructions to crawlers on which areas to avoid.
robots.txt declares a Sitemap
Verifies if a direct link pointing to your XML sitemap is included inside the robots.txt file.
sitemap.xml is reachable
Ensures the sitemap file exists, is valid, and is readable for search engines to easily discover new pages.
Custom or correct 404 page
Checks that when an incorrect URL is typed, the site returns a proper 404 status code and displays a helpful page.
Favicon is present
Checks for a site icon displayed in browser tabs and mobile search results.
Viewport meta tag is present
A mandatory tag for mobile optimization that instructs browsers how to scale content to fit mobile screens.
Canonical link is set
Tells search engines which URL is the master version to prevent duplicate content issues.
Clickjacking protection set
A security check of HTTP response headers (X-Frame-Options or Content-Security-Policy) that stops frame hijacking.
HSTS header is set
An HTTP header that forces browsers to communicate with your site exclusively over secure HTTPS connections.
DMARC is enforced
A domain-level trust and security signal that prevents unauthorized parties from sending spoofed emails.
hreflang alternates declared
Checks for tags specifying localized versions of the site. Automatically marked N/A on single-language sites.
Title tag is present
Confirms that the page has a defined HTML title.
Title length is within range
Checks if the title length is optimal (typically 30–60 characters) to avoid truncation.
Meta description is present
Checks for the brief summary text visible beneath the title in search engine results.
Meta description length is within range
Ensures the description stays within 120–160 characters to maximize Click-Through Rate (CTR).
Single H1
Verifies that the page contains exactly one main header. Missing or multiple H1 tags break layout structure.
Heading hierarchy is consistent
Checks if subheadings follow a logical order (e.g., H3 follows H2 instead of skipping directly to H5).
Images have alt text
Verifies that images have alt='...' attributes so engines understand their visual context.
Internal links are present
Verifies if the page links to other internal URLs on the same domain, distributing site authority.
Words on the page
Measures total text content volume to detect thin or empty pages.
Lang attribute declared
Checks if the opening html tag specifies the page language (e.g., lang='en') for proper rendering.
Content depth is sufficient
Evaluates if the text provides a comprehensive look at the topic or if it is too shallow.
Duplicate titles are avoided
Ensures the scanned page does not share an identical title tag with another crawled page on your site.
Duplicate meta descriptions are avoided
Tracks repeating meta descriptions across crawled pages.
FAQ or question coverage is present
Checks if the text includes question-and-answer patterns, vital for voice search and AI direct answers.
Freshness signals are visible
Looks for publication dates, update timestamps, or current time hooks within the text.
Author or team evidence is present
Detects links or bio blocks matching the content creators, establishing expertise (E-E-A-T).
About and contact evidence is present
Looks for internal URLs pointing to contact or company info, confirming real business identity.
Trust proof is present
Identifies signals of customer reviews, certifications, partnerships, or business guarantees embedded in the copy.
Pages include answer-ready structure
Analyzes whether paragraphs are formatted cleanly for AI models to easily pull block quotes.
JSON-LD schema block(s)
The primary code layer translating human copy into structured data machines can instantly parse.
Organization or Person schema present
Confirms you have clearly defined the entity behind the website to the AI network.
Article/Product/Service schema present
Helps AI engines understand if you offer inventory, services, or high-value expert content.
/llms.txt is published
A new standard file containing clean text designed specifically for fast processing and ingestion by LLMs.
/agents.txt is published
A text file holding access permissions and guidelines explicitly targeted at web-based AI agents.
AI crawlers are allowed
Inspects robots.txt to ensure you haven't accidentally blocked bots like GPTBot and ClaudeBot.
5 of 6 semantic tags present
Checks for proper use of main, article, header, nav, footer, and section tags to separate text from frame.
Publish/update date metadata
Verifies if article timestamps are declared machine-readably so the AI knows the copy is current.
Author attribution
Seeks explicit linkages connecting content blocks to a verified person or organization.
First paragraph: 30-80 words
Checks if the introduction offers a short, highly-concentrated summary – an ideal layout for AI extraction.
Open Graph core tags complete
Checks for og:title, og:description, and og:url fields in the code metadata.
Share image (og:image) is set
Ensures a high-resolution card asset loads automatically when shared in communication apps.
Twitter card declared
Specific tags that format link previews natively on the X (Twitter) platform.
Social profile links detected
Scans the code for links pointing to your official social handles (Facebook, LinkedIn, etc.).
At least two social platforms linked
Verifies a healthy minimum baseline of brand channels outside the root site.
Schema.org sameAs declared
Checks if your structured data includes the sameAs property to declare explicit profile linkages.
sameAs covers every detected social profile
Cross-references crawled profile links against those defined in your schema to ensure alignment.
Apple touch icon set
A specialized shortcut graphic loaded when a mobile consumer pins your webpage to an iOS home screen.
Document lang declared
Guides screen reading software to interpret terms using the correct accent and dictionary rules.
All images have meaningful alt text
Guarantees no images leave empty data voids for sight-impaired visitors.
Landmark regions are present on the page
Uses structural HTML5 markers allowing screen readers to quickly jump straight to content blocks.
Form fields have labels
Confirms input fields (like email forms) are tied explicitly to label tags so consumers know what data to input.
All links have accessible text
Disallows vague link text like 'click here' which lack standalone context for assistive scripts.
No tabindex > 0
Ensures natural keyboard Tab key sequencing isn't artificially hijacked, preserving keyboard usage flow.
Lighthouse accessibility data
This test demands a fully simulated automated browser. Currently it displays as N/A and does not penalize your grade.
Privacy policy is linked from the page
Scans the layout for standard internal linkages to your mandatory legal privacy documentation.
0 third-party tracker hosts loaded
Inspects static HTML resources to identify ad network tracking or exchange scripts.
Cookie consent banner detected
Validates visual script traces verifying the inclusion of a cookie compliance banner.
No browser-fingerprinting libraries detected
Screens for background tracking scripts trying to isolate device profiles without user consent.
Cookies have Secure, HttpOnly, and SameSite
Validates incoming network Set-Cookie headers for strict access parameters protecting active sessions.
Referrer-Policy header is set
A crucial privacy header controlling how much origin path detail is passed onward when an outbound link is clicked.