Overview

This document covers how to implement a homepage takeover featuring a Fabric XL ad unit alongside companion banner ads.

Use Case: Homepage Takeover with Fabric XL

A homepage takeover with Fabric XL combines a high-impact Fabric XL creative with supporting banner ads across all homepage ad slots for maximum brand visibility and engagement. This takeover requires 4 creatives to cover all homepage slots.

Key‑Value Targeting

Use the site-side key category with value homepage for precise homepage targeting.

Key = category
Value = homepage
GAM UI → Add Targeting → Custom Targeting → category = homepage

Example screenshot:

This shows the key-value targeting setup in GAM.

💡 Tip: To view the key-value targeting in the GAM console, open guernseypress.com/?google_force_console in your browser.
The console will appear, and you will be able to see the value as shown in the screenshot above.

Example site-side (gpt.js) injection

<script>
  // Example: set page-level key-values
  window.googletag = window.googletag || { cmd: [] };
  googletag.cmd.push(function() {
    googletag.pubads().setTargeting('category', ['homepage']);
  });
</script>

Placements & Ad Units

Target the homepage placement which includes:

• 1x Fabric XL ad unit (970×251 expected creative size)
• 2x Billboard slots (970×250 each)
• 1x MPU slot (300×250)

Placement targeting in GAM:

This screenshot shows how to select and maintain all ad units in the placement. Ensure all relevant ad units are included and kept up to date for consistent targeting.

Line Item Settings

Expected Creative Sizes in GAM:

Add all 4 expected creative sizes: 970×251 (Fabric XL), 2× 970×250 (Billboards), and 300×250 (MPU).

Companion Ads

Companion ads appear alongside the Fabric XL creative to reinforce brand messaging across the homepage. For this homepage takeover, you need 4 creatives total.

Creative Requirements

Creative Strategy

• Create 4 separate creatives (GAM limit: 1 creative per slot)
• Maintain consistent branding across all creatives
• Fabric XL should be the hero creative with companion ads supporting the message
• Ensure all creatives are approved before flight start

Implementation Steps

1. Create Fabric XL Creative

Follow the Fabric XL Ad Implementation guide:

• Go to Delivery → Creatives → New Creative
• Select Custom Creative Template → Fabric XL
• Upload image (design at 1300×500px, safe area 740×250px)
• Add destination URL
• Expected creative size: 970×251

2. Create Billboard Creatives (×2)

Create two separate billboard creatives:

• Size: 970×250
• Upload two distinct creatives (or duplicates if using same design)
• Add destination URLs

3. Create MPU Creative

Create the medium rectangle creative:

• Size: 300×250
• Upload creative with consistent branding
• Add destination URL

4. Configure Line Item

Set up the line item:

• Type: Sponsorship
• Add expected creative sizes: 970×251, 970×250 (×2), 300×250
• Targeting: Placement + category=homepage
• Frequency cap: 1 per user per day

5. Attach All 4 Creatives

Attach all creatives to the line item and verify approval status.

6. Test Before Launch

Use guernseypress.com/?google_force_console to verify:

• All 4 creatives are delivering correctly
• Fabric XL renders properly with safe area content visible
• Companion ads display with consistent branding

Troubleshooting