Content Security Policy Blocking Pixels: How to Fix It
Fix tracking pixels blocked by Content Security Policy: read the console error, update script-src, connect-src, img-src and frame-src, and test in report-only.
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Step-by-step fixes for Meta, Google, TikTok, Reddit and other tracking pixels. Practical guides for marketers, store owners and developers — what the error means, the most likely causes, and how to confirm the fix.
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Meta Pixel Not Firing? 8 Common Causes and How to Fix EachMeta Pixel · 7 min read
How to Use Meta Test Events (and Why Nothing Shows Up)Meta Pixel · 6 min read
GA4 Events Not Showing in Reports? How to Find the CauseGoogle · 7 min read
GTM Preview Mode Not Working? Fix Connection and Firing IssuesGoogle · 7 min read
TikTok Pixel Not Firing? How to Find and Fix the CauseTikTok · 7 min read
Shopify Pixels in Customer Events: Fix Missing TrackingShopify · 8 min read
Reddit Pixel Not Working? Setup and Troubleshooting GuideMore platforms · 7 min read
Pinterest Tag Errors: How to Fix Common Tag Helper WarningsMore platforms · 6 min read
Snapchat Pixel Not Working? Fix Firing and Attribution IssuesMore platforms · 6 min read
LinkedIn Insight Tag Not Working? Fix Unverified StatusMore platforms · 7 min read
Microsoft UET Tag Not Working? Fix Tags and Conversion GoalsMore platforms · 7 min read
Meta Pixel Firing Twice? How to Find and Remove Duplicate EventsMeta Pixel · 6 min read
Meta Pixel and Conversions API Deduplication: Fix Double CountsMeta Pixel · 6 min read
GA4 Purchase Counted Twice? How to Stop Duplicate PurchasesGoogle · 7 min read
Duplicate GA4 Page Views From gtag.js and GTM: How to FixGoogle · 7 min read
TikTok Events API Deduplication: Fix Double-Counted EventsTikTok · 6 min read
Google Ads Conversions Not Recording? Causes and FixesGoogle · 7 min read
Meta Events Manager Diagnostics Warnings Explained and FixedMeta Pixel · 7 min read
How to Check Google Consent Mode v2 Is Working CorrectlyGoogle · 6 min read
Meta Pixel Missing Value or Currency? Fix Purchase ParametersMeta Pixel · 6 min read
How to Check Which Tracking Pixels and Events a Website FiresFundamentals · 6 min read
Content Security Policy Blocking Pixels: How to Fix ItFundamentals · 6 min read
Pixel Tracking in Single-Page Apps: Fix Missing Page ViewsFundamentals · 7 min read
Why Browser Pixels Lose Data: Ad Blockers, ITP and ConsentFundamentals · 7 min read
Pixel Tracking Launch Checklist: Test Before You Spend on AdsFundamentals · 6 min read
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Meta Pixel6 guidesGoogle6 guidesTikTok2 guidesMore platforms5 guidesShopify1 guideFundamentals5 guides
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Duplicate GA4 Page Views From gtag.js and GTM: How to Fix
Hard-coded gtag.js plus Google Tag Manager or a CMS plugin can double page views and conversions. Learn how to find every copy of the tag and keep exactly one.
GA4 Events Not Showing in Reports? How to Find the Cause
GA4 events missing from reports? Check processing delays, DebugView, data filters, the measurement ID and consent mode, then verify each event step by step.
GA4 Purchase Counted Twice? How to Stop Duplicate Purchases
GA4 counting purchases twice? Learn how thank-you page reloads, duplicate tags and bad transaction_id values cause it, plus how to fix it and verify it.
Google Ads Conversions Not Recording? Causes and Fixes
Google Ads not recording conversions? Read the status, check the tag, protect the GCLID through redirects, and review consent settings and reporting delays.
GTM Preview Mode Not Working? Fix Connection and Firing Issues
GTM Preview won't connect or tags won't fire? Check blockers, the container ID, workspaces and publishing, then debug every failing trigger in Tag Assistant.
How to Check Google Consent Mode v2 Is Working Correctly
Verify Google Consent Mode v2 in Tag Assistant: confirm all four consent signals, correct defaults, banner updates, and expected basic vs advanced behavior.
How to Check Which Tracking Pixels and Events a Website Fires
See exactly which tracking pixels and events any website fires, using DevTools Network filters, each platform's helper extension and GTM preview mode.
How to Use Meta Test Events (and Why Nothing Shows Up)
Use Test Events in Meta Events Manager to check browser and Conversions API events, send test_event_code correctly, and fix the usual empty-screen causes.
LinkedIn Insight Tag Not Working? Fix Unverified Status
Fix a LinkedIn Insight Tag stuck on Unverified or conversions that won't track: partner ID, blocked domains, consent and conversion rules, then verify it.
Meta Events Manager Diagnostics Warnings Explained and Fixed
Understand Meta Events Manager Diagnostics warnings and fix the common ones: low event match quality, domain issues, deduplication gaps and missing parameters.
Meta Pixel and Conversions API Deduplication: Fix Double Counts
Fix double-counted Meta events when using the Pixel and Conversions API. Match eventID to event_id and event names, respect the 48-hour window, and verify it.
Meta Pixel Firing Twice? How to Find and Remove Duplicate Events
PageView or Purchase firing twice? Find where duplicate Meta Pixel code comes from (theme, app, GTM, extra pixel IDs or double init) and remove it safely.
Meta Pixel Missing Value or Currency? Fix Purchase Parameters
Fix Meta Pixel warnings about missing value or currency on Purchase and AddToCart: send a numeric value and an ISO 4217 code. Includes working fbq examples.
Meta Pixel Not Firing? 8 Common Causes and How to Fix Each
Meta Pixel not firing? Work through the eight usual causes, from missing base code and wrong pixel IDs to consent banners, CSP and GTM triggers, then verify.
Microsoft UET Tag Not Working? Fix Tags and Conversion Goals
Fix Microsoft Advertising UET problems: Unverified or inactive tags, consent mode, event goals that never match and missing revenue, checked in UET Tag Helper.
Pinterest Tag Errors: How to Fix Common Tag Helper Warnings
Fix Pinterest Tag errors: missing events, Tag Helper warnings about value, order ID and enhanced match, and duplicates. Then confirm with Test events.
Pixel Tracking in Single-Page Apps: Fix Missing Page Views
Fix pixels in React, Next.js and Vue apps that only fire PageView once: track route changes with GTM History Change or router hooks, without duplicates.
Pixel Tracking Launch Checklist: Test Before You Spend on Ads
A pre-launch pixel checklist: one base code per platform, correct events and parameters, server dedup, consent, test purchases and click IDs that survive.
Reddit Pixel Not Working? Setup and Troubleshooting Guide
Fix a Reddit Pixel that isn't tracking: check the pixel ID, event names, CSP and consent, set up Conversions API dedup, and confirm events in Events Manager.
Shopify Pixels in Customer Events: Fix Missing Tracking
Fix missing or duplicate Shopify pixel events: app pixels vs custom pixels, the Customer events sandbox, analytics.subscribe events and how to test them.
Snapchat Pixel Not Working? Fix Firing and Attribution Issues
Fix a Snap Pixel that won't fire or events that aren't attributed: event names, PURCHASE parameters, click IDs and CAPI dedup, verified with Test Events.
TikTok Events API Deduplication: Fix Double-Counted Events
Stop TikTok from counting purchases twice. Learn how Pixel and Events API deduplication uses event_id, what must match, and how to confirm it works.
TikTok Pixel Not Firing? How to Find and Fix the Cause
Fix a TikTok Pixel that isn't firing: check the base code and ttq.load, the pixel ID, consent, ad blockers and event names, then confirm it in Test Events.
Why Browser Pixels Lose Data: Ad Blockers, ITP and Consent
Why browser pixels miss conversions: ad blockers, Safari ITP cookie limits, consent rejection and iOS ATT, plus what server-side tracking can and cannot fix.
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