Tagproof – Pixel Helper for Meta, TikTok & Google Ads

Tag debugger for Meta Pixel, TikTok, GA4, Google Ads and GTM: every event, value and error on the page, with the fix. Read-only.

Proof your pixels before you spend. Tagproof is a read-only pixel helper and tag debugger: it shows every tracking hit a page sends to Meta, Google Analytics 4, Google Ads, Google Tag Manager and TikTok in one fast side panel, and explains each problem in plain language, with a concrete way to fix it. Built for media buyers, marketers and developers who need to know whether tracking works, right now, on the page in front of them. No login, no setup wizard, nothing to configure. See what is really sent • An Overview that answers "will my conversions count?": the same order as Meta, GA4, Google Ads and TikTok received it, with value, currency and deduplication IDs side by side. • Funnel coverage per platform: which of view item, add to cart, checkout and purchase each platform received. • Customer data, Google consent mode and ad-click IDs (fbclid, gclid, ttclid): what the browser sent, decoded. • One live list for all five platforms, grouped by page load, with order values in every row. • "Keep events across pages" keeps checkout → thank-you flows visible. • Decoded parameters with the problem field highlighted, a raw view one click away, and a copy button on every value. • Advanced matching is shown only as "Hashed" or "Not hashed"; values are never displayed. • After a reload: what you fixed, what still fails, what is new. Find problems before they cost money • The same purchase reported with different values or currencies to different platforms. • Non-standard event names ("purchase", "Add To Cart") that silently become custom events. • Missing event IDs that break browser ↔ Conversions API / Events API deduplication. • Purchases without a value or currency, values like "€49" or "1.234,56", invalid currency codes. • Pixels installed twice, lost click IDs (fbclid), missing browser IDs (fbp). • GA4 purchases without transaction_id or items, duplicate page views, Consent Mode explained. • Google Ads conversions without value, currency or transaction ID. • Email addresses or phone numbers in URLs that are sent to ad platforms. • Trackers blocked by an ad blocker in your own browser, so you are not misled. • Optional: JavaScript calls (fbq, gtag, dataLayer, ttq) that never turned into a request. Share it • Copy one issue for your developer (the fix, where it happened, the values sent) or the whole report as Markdown. • Download the full session as JSON. Customer data and email addresses are redacted. Private by design • Read-only: it never changes the website and never sends events. • Everything stays in your browser: no account, no analytics, no remote code. • Captured data is kept in memory for the open tabs only and is cleared when the tab or browser closes. Keyboard shortcut: Alt+Shift+P (changeable in chrome://extensions/shortcuts). Inside the panel: / to search, J/K to move, 1/2/3 to switch views, Ctrl/⌘+E to pause, ? for all shortcuts. Meta, Google Analytics, Google Ads, Google Tag Manager and TikTok are trademarks of their respective owners. Tagproof is not affiliated with or endorsed by them.