All Pixel Helper - Tag & dataLayer Debugger

Debug 40 ad & analytics pixels in one tool — GA4, GTM, Meta, TikTok and more. Decoded params, lint errors, no signup.

All Pixel Helper shows you every advertising and analytics tag firing on a page, decodes what each one sent, and tells you what is wrong with it. Instead of installing a separate helper extension for each ad platform, you get one tool that watches 40 of them at once — including GA4, GTM, Meta, TikTok and Shopify. The screenshots below show the full set. WHAT IT DOES Real-time capture. Every tracking request is intercepted and decoded into readable parameters — event name, account ID, value, currency, content IDs — as it fires. No DevTools Network tab, no copying URLs into a decoder. Per-account grouping. Two tags from the same vendor on one page show as two separate cards, so you can tell which account is misfiring. Error checking. Built-in rules catch invalid account ID formats, missing value or currency on purchase events, currency codes that are not valid ISO-4217, duplicate events, and personal data sent in the clear where the vendor expects a SHA-256 hash. Blocked-request detection. When an ad blocker, DNS filter, or content security policy kills a tag, you see exactly that — instead of guessing why conversions stopped being recorded. Performance rules. Flags loader scripts that finish after the page has loaded, and tags whose script never loaded at all. Consent visibility. On storefronts with a consent gate, the panel surfaces when a shopper's consent was withheld — the usual reason marketing tags quietly stop receiving events in the EU. Installed-tag detection. Reads the page's JavaScript globals, so a tag appears in the list even before it has fired an event. Popup and side panel. A compact popup for a quick look, and a side panel that streams events with filters, search, pause and clear, plus a detail drawer for any single event. Frame-aware. Captures events from embedded iframes, including the sandboxed frames some tag managers and storefront platforms inject. HOW TO USE 1. Open any website. 2. Click the All Pixel Helper icon to see what was detected on the page. 3. Click an event row to open the side panel with that event selected. 4. Read the diagnostics for anything the checker flagged. PRIVACY This extension collects nothing. There is no account, no signup, and no telemetry. Every decode and check runs locally in your browser; request data is never transmitted anywhere. Captured events live in browser session storage and are discarded when you close the browser. PERMISSIONS Read your browsing history (webRequest, webNavigation) — used to observe outgoing tracking requests so they can be decoded, and to know when a page navigates so the event list resets. Requests are read, never blocked or modified. Access data on all websites — tracking endpoints belong to many different vendors on arbitrary sites, so the extension cannot know in advance which hosts to watch. Nothing is sent off your device.