Customloader
Make your gtm tracking url abstract to make it undetectable for ad-blocker
Customloader: Your Anti Ad-Block Shield
Capture up to 30% more tracking data by bypassing ad-blockers and tracking prevention. The most critical add-on for effective server-side tagging.
Bypass Ad-Blockers
Disguise your tracking script with a custom URL that ad-blockers can't detect.
Recover Lost Data
Reclaim the 20-40% of user data typically blocked by browser privacy features.
First-Party Context
Load scripts from your own domain for maximum compatibility and trust.
Customloader is the most important add-on for effective server-side tagging. Without it, your SST setup loses a significant portion of its value because ad-blockers will still prevent data collection.
The main function of Customloader is to proxy the GTM script request through your server-side container, making it virtually undetectable by ad-blocking tools. Instead of loading from googletagmanager.com/gtm.js, your tracking code loads from your own domain with a custom filename.
Ad-blockers and browser privacy features typically detect tracking scripts by:
- Checking the request domain (e.g., googletagmanager.com)
- Matching common script filenames (e.g., gtm.js, analytics.js)
- Analyzing request patterns
Customloader defeats these checks by serving GTM from your own domain with a random or custom filename.
Without Customloader, ad-blockers will block your GTM container, resulting in significant data loss and unreliable analytics.
Quick Setup (2 Minutes)
Customloader can be enabled with just a few clicks from your container dashboard.
Step 1: Navigate to your container on test.sprtags.io > Add-ons > Customloader
Step 2: Generate a random string by clicking "Auto Generate" or enter your own custom value, then click Save:
Step 3: Copy your GTM Web Container ID (starts with GTM-) and paste it in the code generator section. The tracking code will be automatically generated for you.
Step 4: Install the generated code on your website:
- Place the first snippet immediately after the opening
<head>tag - Place the second snippet immediately after the opening
<body>tag