Image pixels allow you to track impressions, clicks, and conversions from your advertising campaigns without relying on JavaScript. They are useful when JavaScript execution is limited, such as in email campaigns or certain ad-serving environments.
Why Use Image Pixels?
Measure campaign performance based on actual user interactions.
Build audience segments from campaign-engaged users.
Retarget users across different advertising platforms.
Optimize ad spend by tracking conversion effectiveness.
Types of Image Pixels
Loop provides three types of image pixels for campaign tracking:
Impression Pixel – Captures when an ad is displayed.
Click Pixel – Captures when a user clicks on an ad.
Conversion Pixel – Captures when a user completes a conversion action.
The availability of these pixels depends on the DSP or campaign manager being used.
How to Generate Image Pixels in Loop
Go to Sources in the Loop platform.
Click Create New.
Select Advertising (Image Pixel).
Choose the platform where the pixel will be placed. The snippet will vary depending on the platform and will include necessary variables (e.g., campaign ID, creative ID).
Loop will generate the following image pixels:
Impression Pixel
Click Pixel
Conversion Pixel
Copy the relevant pixel URL and follow the platform’s documentation to set it up.
Supported Platforms
Loop supports image pixels for the following advertising platforms:
Smart Adserver
E-Planning
Google DV360
Pubmatic
AppNexus
Google Campaign Manager 360 (formerly DoubleClick CM)
Sizmek
Google Ads
Google DV360 for YouTube
Meta
Generic "Others" option for unsupported platforms
Using Image Pixels in Ad Platforms
Image pixels must be placed in an image tag (<img>). Example:
<img src="https://api.retargetly.com/track?t=ABCDEF123&r_campaign=${CAMPAIGN_ID}&r_creative=${CREATIVE_ID}&r_site=${UNIVERSAL_SITE_ID}&r_order=${INSERTION_ORDER_ID}" />
Using Tag Manager for Google & Meta Pixels
For platforms such as Google Ads, Campaign Manager 360, and Meta, image pixels can be deployed directly through Google Tag Manager (GTM) and triggered by relevant platform events. For more information on implementing Google Tag Manager tags, revise our article on this topic or Google's official documentation.
Best Practices for Image Pixel Tracking
✅ Ensure pixels are placed in environments that support <img> tags.
✅ Use secure HTTPS URLs to prevent tracking failures.
✅ Verify correct campaign and event parameters in the pixel URL.
✅ Test pixel activation using network debugging tools in your browser.