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Defold is a free, cross-platform game engine for building 2D and 3D games on desktop, web, mobile, and consoles with one streamlined workflow.

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Updated: 2026-09-23 22:21 Language: English (default) Access: Normal

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What Is HTML5 and What Can You Actually Build With It?

HTML5 is the current standard version of HTML, the markup language that gives a web page its structure and meaning. It replaced the older HTML4 and XHTML markup with a set of semantic elements, native media support, and APIs that let you build responsive websites and mobile-friendly web apps without third-party plugins. You should use it for any new web project; the only real constraint is how far back you need to support very old browsers, which is handled with fallbacks rather than by avoiding HTML5.

HTML5 in one sentence

HTML5 is not a single feature or a framework. It is the umbrella term for the modern HTML specification plus the browser APIs that ship alongside it. When people say "build it in HTML5," they usually mean: use semantic markup, use native <audio> and <video> instead of a plugin, and lean on HTML5 APIs for things like drawing, storage, and form validation.

What HTML5 added over HTML4 and XHTML

The practical differences fall into four groups.

Semantic structure

HTML4 pages were built almost entirely from <div> elements with class names. HTML5 introduced elements that describe what a region is, not just how it looks:

  • <header>, <footer>, <nav>, <main>, <section>, <article>, <aside>, <figure>

This matters for accessibility (screen readers can navigate by landmark), for SEO (search engines can identify the main content), and for maintainability (the markup reads like an outline).

Native media

Before HTML5, playing audio or video in a browser generally required a plugin such as Flash. HTML5 added <audio> and <video> as first-class elements, with <source> for multiple formats and a JavaScript media API for play, pause, and playback control. This is the single biggest reason HTML5 is associated with mobile: plugins were never viable on phones.

Canvas, SVG, and graphics

The <canvas> element gives you a scriptable bitmap drawing surface for charts, games, image editing, and data visualization. SVG (Scalable Vector Graphics) covers resolution-independent vector graphics. Both work inline in HTML5 documents.

Forms and input types

HTML5 added input types and attributes that browsers can validate and render with appropriate keyboards:

Attribute / type What it does
type="email", type="url", type="tel" Triggers the right mobile keyboard and basic validation
type="date", type="number", type="range" Native pickers and steppers
required, pattern, min, max Declarative validation without JavaScript
placeholder Hint text inside the field

How HTML5, CSS, and JavaScript divide the work

A common misconception is that HTML5 alone produces a modern site. It does not. The three layers have distinct jobs:

  • HTML5 — structure and meaning: what each piece of content is.
  • CSS — presentation: layout, typography, color, and the media queries that make a design responsive.
  • JavaScript — behavior: interactivity, data fetching, and the HTML5 APIs such as Canvas, Geolocation, Local Storage, and drag-and-drop.

Responsive design is a CSS technique (fluid grids, flexible images, media queries) applied to HTML5 markup. HTML5 makes it possible to build a mobile-friendly web app; CSS and JavaScript make it work.

Common misconceptions

  • "HTML5 is a framework." It is a specification. Frameworks like React or Angular are JavaScript tools that output HTML.
  • "HTML5 replaced Flash by itself." It provided the native alternatives (video, audio, canvas, animation via CSS/JS) that made Flash unnecessary, but the transition also depended on browsers implementing those features.
  • "HTML5 is one thing you either have or don't." Browser support is feature-by-feature. A browser may support <video> but not a newer input type.
  • "You need a special HTML5 doctype and nothing else changes." The doctype <!DOCTYPE html> is simpler than the old XHTML declarations, but the real changes are in the elements and APIs you use.

Checking browser support and choosing fallbacks

Support varies by feature, not by "HTML5" as a whole. The working method:

  1. Identify the specific feature you need (for example, <video> with a particular codec, or type="date").
  2. Check current support data for that feature on a resource such as Can I Use or MDN's browser compatibility tables.
  3. Decide your support floor — which browsers and versions you must serve.
  4. Add a fallback only where the floor requires it.

Typical fallbacks:

  • Video/audio: provide multiple <source> formats, and text content inside the element for browsers that cannot play it.
  • New input types: browsers that do not recognize type="date" fall back to a text input, so pair it with server-side validation.
  • Semantic elements in very old browsers: these render as unknown inline elements; a small CSS rule (header, nav, section, article, footer { display: block; }) fixes layout.
  • Canvas: include fallback content between the opening and closing tags.

A minimal starting point

A valid HTML5 page needs very little:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Page title</title>
</head>
<body>
  <header>
    <nav aria-label="Main">...</nav>
  </header>
  <main>
    <article>
      <h1>Heading</h1>
      <p>Content.</p>
    </article>
  </main>
  <footer>...</footer>
</body>
</html>

The viewport meta tag is what makes the page scale correctly on phones; without it, a responsive layout will not behave as intended on mobile.

How to decide

Use HTML5 for any new site or web app — there is no competing current standard. The decision is not whether to use it but which features you can rely on given your audience's browsers, and where you need a fallback. If you are rebuilding an older HTML4 or XHTML site, the migration is mostly mechanical: swap the doctype, replace layout <div>s with semantic elements where they genuinely describe the content, and replace plugin-based media with native elements.

What Is the Web? How It Works and How It Differs from the Internet

The web (World Wide Web) is a system of interlinked documents and resources, accessed over the internet using browsers and identified by URLs. It is one service that runs on top of the internet, not the internet itself. This explanation covers the core building blocks, what happens when a page loads, and how to tell "web" apart from "internet," "browser," and "search engine."

Web vs. internet vs. browser vs. search engine

These terms get used interchangeably, but they describe different things:

Term What it is Example
Internet The global network of connected computers and infrastructure Cables, routers, data centers, Wi-Fi
Web A service on the internet made of linked documents and resources Websites, web apps, pages
Browser Software that requests and displays web content Chrome, Firefox, Safari
Search engine A website/service that indexes web content and helps you find it Google, Bing

A useful analogy: the internet is the road system, the web is one type of traffic that travels on it, the browser is your car, and a search engine is a directory that tells you which roads lead where.

Email, video calls, and many mobile apps also use the internet but are not the web. Email, for instance, relies on its own protocols (like SMTP) rather than web pages.

The core building blocks of the web

URLs

A URL (Uniform Resource Locator) is the address of a resource on the web. A typical URL has parts that each do a job:

https://www.example.com/products/item?id=42
  • https — the protocol (how to communicate)
  • www.example.com — the domain (which server to contact)
  • /products/item — the path (which resource on that server)
  • ?id=42 — a query string (extra parameters)

HTTP and HTTPS

HTTP (Hypertext Transfer Protocol) is the set of rules browsers and servers use to exchange requests and responses. HTTPS is the same protocol wrapped in encryption (TLS), so the data can't be read or altered in transit. Most sites today use HTTPS, and browsers flag plain HTTP as "not secure."

Browsers

A browser turns code into the pages you see. It sends requests, receives files (HTML, CSS, JavaScript, images), and renders them into a visual layout. It also manages cookies, caching, and security warnings.

Web servers

A web server is a computer (and the software on it) that stores web content and responds to requests. When you visit a page, your browser asks a server for files, and the server sends them back.

What happens when you load a page

  1. You enter a URL or click a link. The browser reads the address.
  2. DNS lookup. The domain name (like example.com) is translated into an IP address so the browser knows which server to contact.
  3. Connection. The browser opens a connection to that server, using HTTPS if available.
  4. Request. The browser sends an HTTP request for the specific resource.
  5. Response. The server returns the requested files and a status code (for example, 200 for success, 404 for not found).
  6. Rendering. The browser parses HTML, applies CSS for styling, runs JavaScript for interactivity, and draws the page.
  7. Follow-up requests. The page may request additional resources — images, fonts, scripts — before it's fully loaded.

If any step fails, you see an error: a DNS failure means the domain couldn't be resolved; a timeout means the server didn't respond; a 404 means the server responded but the resource wasn't there.

Where the web fits in everyday use

The web is what you're using when you:

  • Open a site in a browser to read, shop, or log in
  • Follow a link from an email or message
  • Use a web app (a service that runs in the browser rather than as an installed program)
  • Watch a video embedded on a page

It is not what you're using when you:

  • Send or receive email through a mail client
  • Make a phone or video call over the internet
  • Use an installed mobile app that talks to its own servers

Those still depend on the internet, but they don't require a browser or web pages.

Common confusions, cleared up

  • "The web is down." Usually a specific site or your connection is down, not the entire web.
  • "I found it on the internet." If you found it through a browser and a URL, you found it on the web.
  • "My browser is the internet." The browser is a tool for accessing the web; the internet is the underlying network.
  • "A search engine is the web." A search engine is one website among many that helps you navigate the web.

Quick reference

  • Web = linked documents and resources accessed via browsers over the internet.
  • Internet = the global network that carries many services, including the web.
  • Browser = software that requests and displays web content.
  • URL = the address of a web resource.
  • HTTP/HTTPS = the rules for exchanging web requests and responses; HTTPS adds encryption.
  • Web server = the machine that stores and serves web content.

Understanding these distinctions makes it easier to describe problems accurately, choose the right tools, and follow technical instructions without mixing up the layers.

Desktop vs Laptop: How to Choose and Buy the Right Computer

Choose a desktop if you want the most performance per dollar, easy upgrades, and don't need to move your computer. Choose a laptop if portability matters more than raw power and future upgradability. If a desktop is right for you, the next decision is prebuilt vs custom build: prebuilt if you want to start using it immediately with a single warranty, custom if you want specific parts, better value at higher budgets, and a clear upgrade path. Newegg sells both ready-made computers and millions of individual PC parts, so all three paths are available from one storefront.

Desktop vs laptop: the core trade-offs

Factor Desktop Laptop
Performance per dollar Higher — same budget buys a stronger CPU/GPU Lower — you pay for miniaturization, battery, and display
Upgradability High — swap GPU, RAM, storage, PSU, cooling Usually limited to RAM and storage, sometimes soldered
Portability None — fixed to a desk Built in
Heat and noise Easier to cool quietly with large fans/heatsinks Constrained by thin chassis; fans spin up under load
Total cost Needs monitor, keyboard, mouse, speakers Everything included
Repair Individual parts replaceable Often whole-unit service

The practical rule: if you game or run heavy workloads at a desk more than 80% of the time, a desktop gives you more machine for the same money. If you need to work or play away from that desk regularly, a laptop is the only option that actually fits the use case.

Prebuilt desktop vs custom build

Once you've picked a desktop, decide how it gets assembled.

Choose a prebuilt if:

  • You want to unbox and start using it the same day
  • You want one warranty and one point of contact for support
  • You're buying at a lower budget, where prebuilts often undercut DIY once you count the OS and peripherals
  • You don't want to troubleshoot compatibility, BIOS, or cable management

Choose a custom build if:

  • You have specific requirements (a particular GPU, a quiet-focused case, a workstation CPU, ECC memory)
  • You plan to upgrade over time and want standard, replaceable parts
  • You're comfortable diagnosing a no-boot system with basic steps like reseating RAM and checking power connections
  • You want to reuse parts you already own

A middle path worth knowing: many sellers offer configurable systems where you pick the CPU, GPU, and storage at checkout. That gets you custom specs with a single warranty.

Match specs to what you actually do

Don't buy by tier names alone — match the component to the workload.

  • Gaming: GPU is the priority. Spend the largest share of your budget there, then on a CPU that won't bottleneck it. 16 GB RAM is a reasonable floor; 32 GB helps with heavily modded games and background apps.
  • General work and study: A modern mid-range CPU, 16 GB RAM, and a fast SSD matter more than a discrete GPU. Integrated graphics are fine unless you game or do GPU-accelerated work.
  • Workstation and AI tasks: Prioritize CPU core count, RAM capacity, and GPU VRAM. These workloads often care more about memory and VRAM than about clock speed. Check that your chosen software supports your GPU platform before buying.
  • Storage: An NVMe SSD for the OS and active projects; add a second drive for bulk storage. Capacity needs vary widely, so size to your actual file volume rather than a default.

For laptops specifically, the same logic applies but with less room to fix mistakes — RAM and storage are often the only upgradeable parts, so buy the configuration you'll want in two years, not just today.

Set a realistic total budget

The sticker price is rarely the full cost. Budget for:

  • Desktop: monitor, keyboard, mouse, speakers or headset, and possibly a Windows license if not included
  • Laptop: a cooling pad or stand if you'll run sustained loads, plus any dock or extra charger you need
  • Both: shipping, and tax where applicable

A useful approach: decide your all-in number first, subtract peripherals, then shop for the machine with what's left. This prevents the common mistake of spending the entire budget on the tower and having nothing left for a display.

Before you order: checks that prevent returns

  • Return policy and warranty: Confirm the return window and who honors the warranty — the seller or the manufacturer. Policies differ between prebuilt systems and individual parts.
  • Seller reputation: On a marketplace, check the seller's rating and history, not just the product rating.
  • Compatibility (custom builds): Verify CPU socket matches motherboard, RAM type (DDR4 vs DDR5) matches the board, GPU length fits the case, and the power supply wattage covers your components with headroom.
  • Power and space: Check your wall circuit and desk or floor space for the case you're considering.
  • Laptop specifics: Confirm the exact GPU wattage and whether RAM/storage are soldered, since these aren't always obvious from the model name.

A quick decision path

  1. Do you need to use the computer away from a desk regularly? Yes → laptop. No → desktop.
  2. Desktop: do you want to use it immediately with one warranty, or specify and upgrade parts yourself? Immediate → prebuilt. Specify/upgrade → custom build.
  3. Match GPU, CPU, RAM, and storage to your primary workload, not to marketing tiers.
  4. Add peripherals and shipping to your budget before comparing prices.
  5. Verify return policy, warranty provider, and — for custom builds — part compatibility before checkout.

Website Overview

An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. Several search or sharing settings need attention. Together they may make snippets, preview images or preferred URLs less consistent across platforms.

Domain and Registration

Registered in 2010, this domain has about 16 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.

DNS and Email

The observed email authentication setup is incomplete: SPF is missing. Nameservers are provided by Amazon Route 53, indicating managed DNS hosting. MX records point to the Google Workspace email service. CAA records restrict which certificate authorities are authorized to issue certificates. No CNAME was found; the observed records resolve directly to addresses.

TLS and Certificates

The certificate uses an RSA 2048-bit public key, offering broad client compatibility. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued by Let's Encrypt, commonly associated with automated certificate services. The certificate's total validity is about 89 days, consistent with a short renewal cycle.

HTTP and Browser Security

The checked browser-security headers were not detected, leaving fewer explicit browser-side safeguards. CORS permits any origin to read this response. This is common for public resources; sensitive responses need narrower handling. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The x-cache, x-served-by, via response header indicates a CDN or caching proxy in the delivery path. No obvious internal addresses or debug information were found in the headers.

Technology Stack Analysis

The public page identifies Google Tag Manager, Google Analytics, Fastly without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

The title has 77 characters and may be truncated in search results. The canonical URL points to another host: https://www.defold.com/. Search engines may consolidate indexing signals there. Twitter Card metadata is configured. JSON-LD includes Organization data, helping describe the organization as an entity. A meta description is present, with 142 characters.

Hosting and Email

DNSAmazon Route 53
HostingFastly
EmailGoogle Workspace
Location United States flagUnited States 185.199.108.153

User reviews (0)

  • No reviews yet.

Pages, Search and Sharing

Meta descriptionDefold is a free, cross-platform game engine for building 2D and 3D games on desktop, web, mobile, and consoles with one streamlined workflow.
Canonical URLhttps://www.defold.com/
LanguageEnglish (default)
Twitter Cardsummary_large_image

Social Sharing Preview

13 fields

robots.txt (opens in a new tab)

0 rules
All bots 0 allowed · 0 disallowed

Sitemaps

1

Registration details RDAP / WHOIS

RegistrarCSL Computer Service Langenbach GmbH d/b/a joker.com
Registered2010-05-26
Expires2030-05-26
Domain statusclient transfer prohibited
Nameserversns-1202.awsdns-22.org、ns-1542.awsdns-00.co.uk、ns-399.awsdns-49.com、ns-528.awsdns-02.net
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Adefold.com185.199.108.153600—
Adefold.com185.199.109.153600—
Adefold.com185.199.110.153600—
Adefold.com185.199.111.153600—
MXdefold.comaspmx.l.google.com60010
MXdefold.comalt1.aspmx.l.google.com60020
MXdefold.comalt2.aspmx.l.google.com60020
MXdefold.comaspmx2.googlemail.com60030
MXdefold.comaspmx3.googlemail.com60030
NSdefold.comns-1202.awsdns-22.org172800—
NSdefold.comns-1542.awsdns-00.co.uk172800—
NSdefold.comns-399.awsdns-49.com172800—
NSdefold.comns-528.awsdns-02.net172800—
TXTdefold.combrevo-code:7d82e113d16168ddce28180e36ca2768600—
TXTdefold.comgoogle-site-verification=aRKjH6gWfFVNnmgNhG9LQjUlrGRJH9Yc1lrWezpdaDk600—
TXTdefold.comgoogle-site-verification=g7uQ4_-YVkZysYM78PMl3WH_NoEASCou5JOriTLIeQM600—
CAAdefold.com0 iodef "mailto:[email protected]"300—
CAAdefold.com0 issuewild "amazon.com"300—
CAAdefold.com0 issuewild "amazonaws.com"300—
CAAdefold.com0 issuewild "amazontrust.com"300—
CAAdefold.com0 issuewild "awstrust.com"300—
DMARC_dmarc.defold.comv=DMARC1; p=none; rua=mailto:[email protected]300—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectdefold.com
IssuerLet's Encrypt
Valid until2026-12-19T23:18 · Remaining when checked: 87 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
cache-controlmax-age=600
serverGitHub.com
access-control-allow-origin*

Identified technologies

Google Tag ManagerGoogle AnalyticsFastly