HTML5 ad specifications


Overview

An HTML5 creative is an HTML file that includes or references other files, such as JS or CSS stylesheets, images (JPG, GIF, SVG), and video assets (MP4, WEBM). Unlike static image ads, HTML5 creatives can include animation, video, audio, dynamic content, and user interactions within a single ad unit. They are widely used across desktop, mobile, tablet, and Connected TV (CTV) environments because they provide a flexible and responsive advertising experience.

When the ad is served through a DSP or ad server, the browser loads these assets and renders the creative in real time within the ad placement. Because the ad runs like a lightweight web application, advertisers can create more immersive and data-driven experiences while maintaining compatibility with industry ad specifications and file size requirements.

 

Desktops & laptops

Example format: 160×600 · Wide Skyscraper 

 
FoodTimes – Best Burgers
 
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The 10 Best Burgers You Need to Try This Summer

From smashed patties to towering double-deckers, these are the burgers redefining fast-casual dining in 2024.

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Sarah Chen · Food Editor ·June 12, 2024 ·6 min read

Summer is peak burger season — and this year, the competition is fiercer than ever.

What makes a great summer burger?

It starts with the patty. The best burgers use freshly ground beef with an 80/20 fat ratio.

"A great burger is about balance — every element earns its place."
 
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Our Top 10 Picks

 
 
 
Trending Now
 
The Rise of the Smash Burger in America
May 28 · 4 min
 
Best BBQ Joints Open Late This Summer
May 22 · 5 min
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✚  Common types and sizes
TypeSizes (W×Hpx)
Square and rectangle

250×250, 300×250, 320×320, 336×280,
120×600, 160×600, 300×600, 300×1050

Leaderboard

468×60, 728×90, 800×250, 970×90, 970×250

Mobile devices

Example format: 300×250 · Medium Rectangle

 
 
 
 
 
9:41
●●●●WiFi🔋
←
🔒 foodtimes.com/best-burgers
⋯
FoodTimes
☰
Burgers
Recipes
Reviews
BBQ
🍔 Feature

The 10 Best Burgers You Need to Try This Summer

From smashed patties to towering double-deckers — the burgers redefining fast-casual dining.

SC
Sarah Chen · June 12 · 6 min
Article hero image

Summer is peak burger season — and this year, the competition is fiercer than ever.

It starts with the patty. The best burgers use freshly ground beef with an 80/20 fat ratio.

 
Sponsored

Our top picks span everything from fast-food joints to upscale burger bars.

 
 
 
 
✚  Common types and ad sizes
TypeSizes (W×Hpx)
Mobile

320×50, 320×100, 320×480, 300×250, 480×320

Tablets

Example format: 1024×768 · Interstitial

 
 
 
 
9:41
Wednesday, June 12
●●●●WiFi🔋
 
 
 
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🔒 foodtimes.com/features/best-burgers-summer-2024
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Home / Features / Burgers
🍔 Feature

The 10 Best Burgers You Absolutely Need to Try This Summer

From smashed patties to towering double-deckers, these are the burgers redefining fast-casual dining in 2024.

SC
Sarah Chen · Food Editor · June 12, 2024 · 6 min read

Summer is peak burger season — and this year the competition is fiercer than ever. Restaurants across the country are going bigger, bolder, and more creative.

What makes a great summer burger?

It starts with the patty. The best burgers use freshly ground beef with an 80/20 fat ratio — enough fat to stay juicy on a hot grill without becoming greasy.

"A great burger is about balance — every element earns its place."

Our top picks this year span everything from fast-food joints to upscale burger bars.

 
 
 
Trending Now
 
The Rise of the Smash Burger
May 28 · 4 min
 
Best BBQ Joints Open Late
May 22 · 5 min
 
Plant-Based vs. Beef: Taste Test
May 18 · 7 min
Advertisement
Ad Space
240 × 200
✚ Ad types and sizes
TypeSizes (W×H px)
Standard160×600, 300×250, 728×90
In-app1024×90
Interstitial1024×768, 768×1024
Additional sizesContact your account manager
Max expanded (app)768×90→768×1024, 1024×90→1024×768

Technical requirements

File size measurement definitions

Compressed ZIP file must be within 75–100 KB, including all code and assets. 

The ZIP file must include all referenced code libraries, such as JavaScript libraries, and must contain at least one HTML file. All assets must be self-contained; the creative must render correctly offline after extraction. 

All code and assets used by the ad, including images (JPG, GIF, SVG) and video (MP4, WEBM), must be included within the ZIP file. HTML5 creatives must meet all rich media ad specifications, including file load size and ad functionality requirements (refer to programmatic display requirements). 

Only one click-through URL is supported; multiple click-throughs require third-party tags. 

Complex HTML5 creatives with multiple click-through URLs require third-party tags. 

illumin requirements

Ensure the creative width and height are explicitly defined within the <style> section of the <head> tag (for example: body { width: 300px; height: 250px; }).

Dynamic or flexible creative sizes are not supported.

Test all HTML5 creatives across supported browsers and devices before submission.

Include a static fallback image (JPG or PNG) for unsupported browsers. 

Submit creatives 5–7 business days prior to launch to allow compatibility testing with illumin systems and exchange partners. 

FAQs

Why must an HTML5 creative include all assets in the ZIP file?

The HTML5 creative must be self-contained so that it can render correctly after extraction without relying on external asset files

Can an HTML5 creative contain multiple click-through URLs?

No, standard HTML5 creatives support only one click-through URL. Multiple click-through destinations require third-party tags

Can an HTML5 creative use responsive or flexible dimensions?

No. The creative width and height must be explicitly defined. Dynamic or flexible creative sizes are not supported.

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