Tag: html
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Most referenced — #html
Native dialog Element 2Accessible Forms 2Semantic HTML 2HTML Forms — Validation & Accessibility 2HTML Meta Tags & SEO 2ARIA Roles & Attributes 2Screen Readers — How They Parse HTML 2Skip Links & Bypass Blocks 2
How they use it
crawler 841
crawler_json 70
pre-tracking 5
Tag total916 pings
Terms pinged21 / 21
Distinct agents14
Heading Hierarchy (h1-h6)
Headings must form a logical, sequential outline (h1 then h2, no skipped levels) so screen reader users can navigate and grasp page structure.
3w ago
Accessibility beginner
Canonical URL (rel=canonical)
A <link rel='canonical'> tag that tells search engines which URL is the authoritative version of a page — preventing duplicate content from splitting ranking signals across multiple URLs.
3mo ago
Frontend intermediate
HTML lang Attribute
The lang attribute on <html> declares the page's primary language — required for screen readers to select the correct voice profile and pronunciation rules, and for WCAG 2.1 compliance.
3mo ago
Accessibility beginner
HTML Meta Tags
1
Tags in <head> that provide page metadata — title, description, viewport, Open Graph — for browsers, search engines, and social platforms.
3mo ago
Frontend beginner
Image Optimisation
Reducing image file size and delivery overhead through format choice (AVIF, WebP), compression, responsive sizing (srcset), lazy loading, and explicit dimensions — the single highest-impact performance lever for most websites.
3mo ago
Performance intermediate
Open Graph Protocol
2
Meta tags that control how a page appears when shared on social platforms — title, description, image, and URL shown in link previews on Facebook, LinkedIn, Slack, Discord, and Twitter/X.
3mo ago
Frontend beginner
Resource Hints (preconnect, prefetch, preload)
HTML link attributes that instruct the browser to take early action on resources — opening connections, fetching future pages, or loading critical assets before they are discovered in HTML parsing.
3mo ago
Performance intermediate
Script Loading (defer, async, type=module)
How and when browser downloads and executes JavaScript — defer, async, and type=module control whether scripts block HTML parsing and in what order they run.
3mo ago
Frontend intermediate
Structured Data — JSON-LD
Machine-readable schema markup embedded in a <script type='application/ld+json'> block, enabling Google rich results — star ratings, FAQs, breadcrumbs, events, and recipes in search.
3mo ago
Frontend intermediate
Accessible Data Tables
HTML tables marked up with correct semantic elements and ARIA roles so screen readers can announce cell context — column header, row header, and position — to the user.
3mo ago
Accessibility beginner
DOMDocument & XPath in PHP
PHP 5.0+
1
PHP's DOMDocument extension parses HTML and XML into a traversable tree. Combined with DOMXPath, you can query the document with XPath expressions — far more powerful than regex for extracting data from HTML.
3mo ago
PHP intermediate
Accessible Forms
HTML5
1
Every input needs a visible label, errors linked via aria-describedby, required fields indicated, and validation announced via aria-live.
3mo ago
Accessibility intermediate
Accessible SVGs
SVG1.1
Decorative SVGs need aria-hidden=true; informative SVGs need role=img and aria-label or title+desc elements.
3mo ago
Accessibility intermediate
HTML Meta Tags & SEO
PHP 5.0+
1
Essential meta tags for search engine visibility and social sharing — title, description, canonical, Open Graph, Twitter Card, and structured data.
3mo ago
Frontend beginner
Native dialog Element
HTML5
The HTML dialog element provides accessible modals and non-modal dialogs natively — with built-in focus trapping, backdrop rendering, and the Escape key — without JavaScript libraries.
3mo ago
Frontend beginner
Screen Readers — How They Parse HTML
HTML5
Screen readers build an accessibility tree — semantic HTML provides roles automatically; ARIA fills gaps for custom components.
3mo ago
Accessibility intermediate
Skip Links & Bypass Blocks
HTML5
1
Hidden links at page top letting keyboard users jump past navigation to main content — a WCAG 2.4.1 requirement.
3mo ago
Accessibility beginner
ARIA Roles & Attributes
HTML5
2
Accessible Rich Internet Applications attributes add semantic meaning to HTML elements for screen readers — supplementing native HTML semantics for custom widgets.
3mo ago
Frontend intermediate
HTML Forms — Validation & Accessibility
HTML5
1
Native HTML form validation, input types, and accessibility patterns — using browser built-ins before reaching for JavaScript.
3mo ago
Frontend beginner
Semantic HTML
HTML5
Using HTML elements for their intended meaning — <article>, <nav>, <main>, <time> — improving accessibility, SEO, and code clarity.
3mo ago
Frontend beginner