---
title: "Blog"
description: "Research and practical notes on Meta Pixel, consent and ad tracking."
url: "https://ispixelworking.com/blog"
---

# Blog

- [How to check if your Meta Pixel is working](https://ispixelworking.com/blog/check-meta-pixel-working) (2026-10-12): A green icon in Meta's extension is not proof. How to check your Meta Pixel with Events Manager, Data Advisor and your browser, and fix what you find.
- [Facebook Pixel not tracking all purchases? Why Meta shows fewer sales than your shop](https://ispixelworking.com/blog/events-manager-fewer-events) (2026-10-12): Your shop shows 200 orders, Meta shows 140 purchases. Which part of the gap is normal, which is a tracking problem, and how to find and fix it.
- [What is fbclid? The Facebook click ID and the _fbc cookie, explained](https://ispixelworking.com/blog/fbclid-fbc-cookie-explained) (2026-10-12): fbclid is the click ID Meta adds to links from Facebook and Instagram. What it means, how it differs from UTM tags, whether to remove it, and how to keep it.
- [Meta Pixel event deduplication: why every event needs an event ID](https://ispixelworking.com/blog/pixel-and-conversions-api-event-ids) (2026-10-12): How Meta deduplicates Pixel and Conversions API events, how to set up matching event IDs on Shopify, GTM or custom code, and how to test it in Events Manager.