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Technical showcase

Inside the Ad

Great ads aren't just designed. They're engineered.

See what goes into a well-crafted HTML5 ad. Explore the actual files, inspect how it works, and discover why every kilobyte matters.

Every kilobyte has to earn its place.

Choose an ad

Studio demo: multi-file HTML5 package with external CSS/JS and one SVG asset. No libraries, native CSS motion, demo CTA without a live clickTag.

Live preview

Original size: 300x250

Open fullscreen ↗

Studio demos in isolated iframes. No automatic redirects. No access to site data.

Technical analysis

Values come from a build-time analysis of the actual files — no estimates.

Uncompressed (sum of files)
4.77 KB
4,889 B
ZIP package (measured)
2.95 KB
3,021 B
Files
4

Composition

4.77 KBtotal
  • HTML971 B(19.9%)
  • CSS2.32 KB(48.6%)
  • JavaScript1.18 KB(24.8%)
  • Images331 B(6.8%)

Measured ZIP of 4 file(s) via system zip (deflate). Illustrative package weight — not an ad-server delivery package.

Analyzed at: 10/24/2026, 7:20:56 PM

File explorer

Actual files in the demo folder. Source shown only for approved files.

PathTypeSize
ad.jsJavaScript1.18 KB1,212 B
assets/mark.svgImages331 B331 B
index.htmlHTML971 B971 B
styles.cssCSS2.32 KB2,375 B

Engineering insights

  • Applies to this demo

    No unnecessary dependencies

    This package loads no frameworks and no animation libraries. CSS keyframes and vanilla JS cover hover, CTA, and event hints.

  • Applies to this demo

    Optimized assets

    Instead of raster images, the demo uses a small SVG mark. Visual surfaces come from CSS gradients — fewer files, less weight.

  • Applies to this demo

    Purpose-built animation

    One CSS rotation on the orbit element. No timeline exports, no unused keyframes. Reduced motion disables the spin.

  • General engineering principle

    Adserver-aware development

    In client work we honor specs, clickTags, and weight limits for the delivery environment from the start.

Interaction inspector

Local event log in the browser. No cookies, no tracking endpoints, no persistent IDs.

Interact with the live preview — events will show up here.

Looks simple. Takes craftsmanship.

Great ads aren't about writing more code. They're about making the right decisions. We build HTML5 creatives that look sharp, run efficiently and respect the technical requirements of their environment.

Let's build your next adHTML5 service

How the analysis works

  1. At build time a Node script scans the demo folder and writes measured file sizes to JSON.
  2. This page shows those values as-is — no estimated benchmarks, no invented comparisons.
  3. The live preview runs in a sandboxed iframe without access to the site.
  4. Interaction events stay local in the browser (postMessage, strictly validated).

More examples in the showcase · HTML5 banner production · Ad Autopsy (coming soon)