⌁TagSentinel
YOUR TAGS. ACCOUNTED FOR.

Small tag changes.
Big blind spots.

Catch missing pixels and unexpected tracking changes before they become a reporting mystery.

Free during beta · 3 monitored pages · No card required

TAG HEALTH ILLUSTRATIVE EXAMPLE
Your website, in focus.
G
Google Tag ManagerContainer detected
Detected
↗
Google Analytics 4Measurement ID matched
Detected
m
Meta PixelMissing from this scan
Changed
↳ A clear record of what changed and when.
KEEP AN EYE ONGoogle AnalyticsTag ManagerMeta PixelGoogle AdsTikTok+ more
LESS GUESSWORK, MORE VISIBILITY

A second set of eyes
for your tracking.

01 / CONNECT

Add a page

Choose a public HTTPS page you own or have permission to monitor.

02 / COMPARE

Set your baseline

The first successful scan records your tags. Later scans flag additions and missing IDs.

03 / REVIEW

Stay in the loop

Check daily scan results and 30 days of history in your dashboard. Run a scan after a release.

Detection, with context.

Scans observe scripts and successful network responses in a fresh browser. Consent banners, location, browser blocking, and delayed loading can affect results. A detected tag does not prove a conversion was recorded.

WELCOME TO TAGSENTINEL

Welcome back.

Sign in to your monitoring workspace.
NEW MONITOR

Put a page on your radar.

Monitor only public websites you own or have permission to scan. The first successful scan becomes your baseline.
SCAN HISTORY

Recent scans
PRIVACY & DATA

What we keep.

TagSentinel stores your email, a salted password hash, monitored URLs, detected tag IDs, and scan results on Cloudflare. Scan history is retained for 30 days. Sessions expire after 7 days.

Scans load your public pages in a remote browser and may trigger analytics requests. We do not accept consent banners or store page screenshots, cookies, or full page contents.

Account email is delivered by Cloudflare when enabled. Alert emails are opt-in and require verification. Reset and verification links expire and work once. Email payloads are erased after sending; expired records are purged by the scheduler.

When billing is enabled, Stripe handles payment details. We store customer and subscription identifiers and status, not card details. Stripe may retain payment records after account deletion.

Delete individual monitors or your account from the dashboard to remove associated app records. An active subscription must end before account deletion. Infrastructure logs and provider backups may persist according to provider retention policies. No advertising trackers are installed on this application.
ACCOUNT & BILLING

Your workspace.

Email verification

Free plan

Starter$29 / month

25 monitored pages · 100 daily scans · Daily monitoring · 30-day history
ACCOUNT RECOVERY

Reset your password.

We’ll email a link if this address has an account.
ACCOUNT RECOVERY

Choose a new password.

Resetting your password signs out all existing sessions.
EMAIL VERIFICATION

Confirm your email.

Confirm to verify the email address associated with this link.