Analytics Debugger is a GA4 and GTM debugger in a DevTools panel, with Adobe and a few others, a dataLayer monitor, hit blocking and a switch to force GA4 DebugView. Its last public release was in September 2023.
Only in Tag Master
Only in Analytics Debugger
None in this comparison.
Both
| Capability | Tag Master | Analytics Debugger |
|---|---|---|
| What it sees | ||
| Platforms decoded | 63 | GA4, GTM, Adobe + |
| Server-side GTM hits recognised | ✓ | – |
| Works on first-party endpoints | ✓ | – |
| How deep it goes | ||
| Explains why a GTM trigger fired | – | – |
| dataLayer monitor | ✓ | ✓ |
| Consent Mode V2 state | ✓ | ~ |
| Flags vendors firing without consent | ✓ | – |
| What you can do with it | ||
| Block a vendor’s hits | ✓ | ✓ |
| Force GA4 DebugView | ✓ | ✓ |
| Inject a GTM container | ✓ | – |
| Element picker to GTM trigger | ✓ | – |
| Export captured hits | ✓ | ✓ |
| Practicalities | ||
| Interface | Side panel | DevTools panel |
| Last updated | Sep 2026 · v1.9.0 | Sep 2023 |
| Price | Free | Free |
Analytics Debugger was compared in August 2026 from its public documentation and Chrome Web Store listing; the Tag Master column is current as of version 1.9.0. Something out of date? Tell us and we’ll fix it.
For GA4 and GTM work in DevTools it is a capable tool, and it blocks hits and forces DebugView as Tag Master does. If your work stays inside GA4 and GTM and you prefer a DevTools panel, it covers that ground.
For most debugging, yes. In this comparison Tag Master does 5 things Analytics Debugger does not — server-side GTM hits recognised and works on first-party endpoints among them. Analytics Debugger still has its place, and the section on when to use it says so plainly.
Yes. Both read the page from the browser; having both installed costs nothing, and each can be switched off when the other is in use.
Yes — every feature, with no account and no paid tier, including for commercial work.
All five tools in one table: the full comparison. Other comparisons: Tag Assistant · Omnibug · Meta Pixel Helper
Tag Master is free, needs no account, and collects no data.
Add to Chrome — Free