Cloudflare Zaraz vs Google Tag Gateway: Which to Use

The short answer: Use Cloudflare Zaraz if you want faster page loads by moving all third-party scripts off the browser. Use Google Tag Gateway if you need to recover Google Ads conversion data lost to ad blockers. Use both together if you run Google Ads and also have non-Google scripts slowing your site down. Both are free on every Cloudflare plan.

Third-party scripts are one of the biggest performance killers on modern websites. If you are also considering moving to a faster platform, see our guide on migrating from Wix for businesses that want sub-second load times without rebuilding from scratch. A typical business site loads 15 to 30 tracking and marketing scripts. Each one adds weight, latency, and security risk to every page load. Cloudflare offers two tools to solve this, but they work differently.

Zaraz is a server-side tag manager. It replaces Google Tag Manager and runs scripts on the edge instead of in the browser. Tag Gateway is a first-party proxy. It serves Google tags from your own domain so ad blockers cannot block them. Choosing the wrong one means leaving performance or accuracy on the table.

What Zaraz Does (and What It Replaces)

Zaraz replaces traditional tag managers like Google Tag Manager. Instead of injecting JavaScript into the visitor's browser, Zaraz runs events on Cloudflare's servers.

The difference is real. A site with 10 GTM tools might load 500KB of JavaScript across 15 to 20 requests. All of it blocks the main thread. With Zaraz, your site loads one small script. Everything else runs on the edge.

What Zaraz Manages

• Analytics: GA4, Plausible, Fathom, Matomo
• Advertising pixels: Meta Pixel, Google Ads, TikTok, LinkedIn Insight
• Heatmaps and session recording: Hotjar, Microsoft Clarity
• Chat widgets: Tawk.to, Intercom, Drift
• Custom HTTP requests: any endpoint you need to send events to
• Consent management: built-in API that gates tool loading based on visitor consent

If your site feels slow because of third-party scripts, or if you want centralized control over what loads and when, we can set up Zaraz for your site and show you the before-and-after performance difference.

What Google Tag Gateway Does (and Why It Exists)

Tag Gateway solves a different problem: signal loss. Ad blockers and browsers like Safari block requests to known tracking domains. When googletagmanager.com gets blocked, GA4 stops counting visitors and Google Ads stops recording conversions.

Tag Gateway fixes this by serving Google tags from your own domain. Instead of:

https://www.googletagmanager.com/gtag/js?id=G-XXXXX

Your site loads:

https://yourdomain.com/metrics/gtag/js?id=G-XXXXX

To browsers and ad blockers, this looks like a first-party request from your own site. The tag loads, the measurement fires, and the data reaches Google.

Who Benefits Most From Tag Gateway

Tag Gateway is most valuable if you rely on Google Ads conversion tracking. Every blocked conversion means less data for the algorithm. Less data means higher cost per click and worse targeting.

If you run Google Ads without Tag Gateway, you are losing conversion data. Fewer conversions reported means worse bidding. You pay more and get less.

Wondering how much tracking data your site is losing to ad blockers? We can audit your current setup and show you the gap.

Zaraz vs Tag Gateway: Side-by-Side Comparison

The key difference: Zaraz is about performance and control. Tag Gateway is about measurement accuracy for Google products.

When to Use Each

Use Zaraz Alone When

• Your site loads many third-party scripts and page speed is suffering
• You need centralized consent management for GDPR or CCPA compliance
• You want to replace Google Tag Manager entirely
• You do not run Google Ads campaigns (so signal recovery is not a priority)

Use Tag Gateway Alone When

• You only use Google tools (GA4 and Google Ads)
• Your primary concern is recovering lost conversion data from ad blockers
• You already have acceptable page speed and do not need full tag management
• You want the simplest possible setup (takes about 10 minutes)

Use Both Together When

• You run Google Ads AND use non-Google tools (Meta Pixel, chat widgets, etc.)
• You want maximum page speed AND maximum Google measurement accuracy
• You need consent management for all tools plus first-party delivery for Google tags

Setting Up Both on the Same Domain

Both tools live in the Cloudflare dashboard under your domain. Here is the setup order:

:::timeline - title: "Enable Zaraz" description: "Go to your Cloudflare dashboard, select your domain, and open the Zaraz section. Add each third-party tool you currently load (GA4, Meta Pixel, Hotjar, etc.) as a Zaraz tool. Configure triggers for pageview and custom events." - title: "Remove old scripts" description: "Delete the GTM container and any hardcoded tracking scripts from your site's HTML. Zaraz injects its own lightweight loader automatically. Leaving old scripts in place means double-counting." - title: "Enable Tag Gateway" description: "In the Cloudflare dashboard, open the Google Tag Gateway section. Enter your Google tag ID and choose an unused URL path (like /metrics). Cloudflare provisions the proxy automatically." - title: "Update Google Ads" description: "In Google Tag Manager or your Google Ads account, update the tag configuration to use your gateway path. Google's documentation walks through this step for each product." - title: "Verify" description: "Use Zaraz's debug mode and Google's Tag Assistant to confirm events are flowing through both systems. Check that no duplicate events are being sent." :::

Known Compatibility Note

There is one known issue when running both: the "Disable Zaraz" page rule does not work while Tag Gateway is enabled. This was reported to Cloudflare in September 2025 and is unresolved as of February 2026. If you need to disable Zaraz on specific pages, you will need a different setup for those pages.

Pricing: Both Are Effectively Free for Most Sites

For context, 1 million Zaraz events per month covers a site with roughly 200,000 to 300,000 monthly pageviews (assuming 3 to 5 events per pageview). Most small business websites fall well within the free tier.

Summary

• Zaraz is your tool for page speed and script control. It replaces GTM, runs third-party scripts server-side, and includes built-in consent management.
• Tag Gateway is your tool for Google measurement accuracy. It serves Google tags from your domain, bypassing ad blockers and recovering 11% or more of lost signals.
• Both can run on the same Cloudflare domain with one minor caveat around the Disable Zaraz page rule.
• Both are free for the vast majority of websites. Zaraz charges $5/month only after 1 million events.
• The recommended approach is to use both: Tag Gateway for Google signal recovery, Zaraz for everything else.

Better tag management is one part of a broader digital marketing strategy. If you want to understand how AI is transforming digital marketing in 2026, or how to compare AI marketing tools versus a traditional agency, those guides cover the bigger picture. For businesses evaluating what AI marketing actually is before investing in new tools, that primer is a good starting point.