Hitline: Tracking Debugger for GA4, Meta, TikTok & More

See events from GA4, Meta, TikTok and 47 more platforms, read GTM tags and catch consent leaks in Chrome DevTools.

Is your tracking working? Prove it in one panel. Hitline shows which tracking fires on a page, where it goes, whether it respects consent and whether attribution survives the visit. One click gives a summary, DevTools gives the full picture, and one more click turns the findings into an audit PDF. WHAT IT READS - 50 platforms: analytics, ad pixels, session recording, CRM, tag managers, A/B testing tools and the dataLayer - Your own services too: add a custom platform in Settings with a name and a part of its URL IN THE POPUP - The site you are on, updated live while the popup is open - Platforms found on the page with their event counts, and the server-side GTM verdict - The latest events, with their details on one click - The top issues, and a short audit PDF IN CHROME DEVTOOLS (press F12, open the Hitline tab) - Events: every hit and every dataLayer push, newest first, with all parameters decoded, the account ID and the route (browser, server-side GTM or page). New events light up as they arrive - GTM and sGTM: every tag with its trigger, consent checks and status, each dataLayer event with the tags that fired on it, and server-side GTM checked with four signals - Checks: e-mail addresses sent to ad and analytics platforms, events sent twice, purchases without an order ID, events without a value - Consent: Consent Mode v2 defaults and the visitor's choice, a timeline before and after the choice, and the GTM fix for each leak - Attribution: UTM and gclid followed page by page, cross-domain breaks and unwanted referrals found, with the GA4 setting that fixes them - Tracking plan: load your plan as CSV or JSON and see which events are missing or have wrong parameters - Audit PDF: platforms and IDs, events, GTM tags, the consent timeline, the visit path, and every issue with why it matters and how to fix it PRIVATE BY DESIGN - No account, no server, no analytics inside the extension - Everything is analyzed in your browser. Hitline makes no network requests of its own - Only your settings (language, your domains, tracking plans, custom platforms) are saved, and only on your computer - Minimal permissions: active tab, scripting, local storage and the DevTools panel. No access to all your sites - Open source: https://github.com/shemistanisayev/getlineapps Free, with no paid plan and no usage limit. Built by Shamistan Isayev, analytics and server-side tracking consultant. Need help fixing what Hitline finds? https://shamistanisayev.com