Enter a URL. See what's in your setup.
TagManifest scans your Google Tag Manager setup and your live page in one pass. You get a health score, consent check, tracking inventory, and a list of findings organized by what to fix first. Free, no account.
Scan Now — FreeInstant Scan
93 checks across consent, analytics, advertising, security, and dead code. Enter a URL and results appear in seconds — including what's on your page, not just in your tag manager.
Detailed Observations
Every finding includes a priority tier, affected items, and specific context — structured for investigation, not just flagging.
Easy Export
Download a narrative PDF, detailed report, CSV remediation spreadsheet, or machine-readable JSON — your choice.
Ten views of your tracking setup
Each panel examines a different layer — from overall health to individual tags, from consent configuration to page speed impact.
Health score, priorities, and the full picture
The summary shows your overall score, letter grade, and category breakdowns in one view. Top priorities surface what to investigate first. Positive signals show what’s working. If you provided a site URL, page-level CMP and tracking detection results are included here too.
Every finding, ranked and filterable
All findings sorted by severity — errors first, then optimizations, then notes. Filter by category or search by keyword. Each card shows the finding, which tags are affected, and a recommendation. Expand any card for code evidence and specific context.
Consent — inside the tag manager and on the page
Most consent tools deploy on the page, not inside GTM. TagManifest checks both. See CMP status, DMA readiness, consent coverage across tag types, Custom HTML consent gaps, and — if you provided a URL — whether a consent tool was detected on your live page. The only free tool that checks both layers.
GA4 configuration, ad platforms, and ecommerce
See your GA4 setup at a glance: measurement IDs, event names, Enhanced Measurement overlap, and parameter quality. Ad platform inventory shows which platforms are configured and how. Ecommerce funnel coverage shows what’s tracked and what’s missing. Meta Pixel implementation split (community template vs Custom HTML) is called out explicitly.
Every tag, trigger, and variable mapped
Browse every active and paused tag with its type, consent status, trigger, and parameters. See GA4 events with their parameters inline. Filter by tag type or consent status. This is the inventory view — what’s actually in the setup, organized for review.
Structural patterns and Custom HTML
Custom HTML tags are the wild card in any setup — they run with full page access and no sandboxing. This view classifies each one by behavior: loads external scripts, manipulates the DOM, reads cookies, pushes to the dataLayer. Duplicate scripts, replaceable tags, and obfuscated vendor code are flagged.
Technology stack and vendor inventory
See every vendor and platform detected in the setup: analytics, advertising, chat widgets, heatmaps, ABM tools, and more. Each one shows how it’s implemented (native tag, community template, or Custom HTML) and its consent status.
Page speed impact from your tag manager
Estimates how your setup affects page load based on tag types, external script loading, and execution patterns. Shows which tags contribute most to load time. Static analysis — not a runtime measurement, but a useful signal for what to investigate with Lighthouse or WebPageTest.
Server-side GTM readiness
Checks for indicators that server-side Tag Manager would benefit your setup: ad pixel volume, Custom HTML density, third-party script count, and consent complexity. Shows whether the investment in server-side infrastructure is justified by the current configuration.
Export in the format your team needs
Markdown report for documentation. CSV for ticket tracking. AI-ready folder with structured JSON and a CLAUDE.md that tells Claude, ChatGPT, or any assistant exactly how to interpret the findings. Every export generated in your browser.
Three ways to scan
Pick the method that fits your situation.
Enter a URL
Type your website address. TagManifest finds the Google Tag Manager setup, scans it, and checks your live page for consent tools and tracking scripts. One input, full picture.
Enter a GTM ID
If you know the container ID (GTM-XXXXXX), enter it directly. You can add a site URL later from the scan results for page-level detection.
Upload a JSON export
For the deepest analysis (93 checks, all tag names, folder structure), export your container from GTM and upload the JSON file. Everything runs in your browser.
Common questions
No. Enter your website URL and TagManifest finds and scans your Google Tag Manager setup automatically. For the deepest analysis (all 93 checks, real tag names, folder structure), you can upload a JSON export from GTM: Admin → Export Container → choose your workspace.
No. Nothing is stored between sessions. Scan results exist only in your browser while you’re using the tool.
TagManifest runs 93 checks across 10 categories: consent, GA4 configuration, security, performance, dead code, naming, tag quality, ecommerce, advertising, and infrastructure. URL scans also check your live page for consent tools, tracking scripts outside GTM, and consent defaults.
Yes. 25 checks dedicated to GA4: event naming conventions, parameter limits, reserved event names, PII detection in parameters, debug mode left on, measurement ID handling, Enhanced Measurement overlap, and ecommerce event validation.
Consent Mode v2, CMP detection on the page (OneTrust, Cookiebot, CookieYes, and 9 others), consent initialization timing, ad_storage and ad_user_data coverage, and DMA readiness. TagManifest checks both your tag manager and your live page for consent tools.
Yes. Completely free with no account required. Enter a URL, scan your setup, export the results — no limits, no paywalls.
Yes. Export as a narrative PDF for stakeholders, a detailed PDF with all evidence for developers, or a CSV spreadsheet with one row per finding for ticket tracking. All exports are generated client-side.
TagManifest works in all modern browsers: Chrome, Firefox, Safari, and Edge.
See what's in your setup
Enter your URL and get results in seconds. No account, no paywall, nothing stored.
Scan Now — Free