What is MarTech Inspector?
MarTech Inspector is a Chrome extension that automatically detects the marketing tools running on the site you're viewing, and lets you check and edit Cookie, Storage, and data layer values right on the page. It's built for digital marketers, web owners, and developers who want to speed up tag implementation checks and debugging.
This manual walks through each of the five tabs with real screenshots. Start with this page to get the big picture.
What it does
MarTech Inspector's functionality is split across five tabs. Each works independently, so feel free to jump to whichever one you need.
- MarTech Inspector — Automatically detects tools on the page and lets you view/edit Cookie, Storage, and data layer values.
- Live Mock — Swap text and images on the page on the fly to preview changes before they go live.
- Image Inspector — Lists every image on the page; check alt text and sizes, or download images in bulk.
- A/B Calculator — Estimates the time and traffic an A/B test needs, from visitor count and conversion rate.
- Timeline — Visualizes the order tags fire in, so you can debug tags that are slow or don't fire.
Free vs. Pro
Core features — detection, editing, and CMP visualization — are all free. For deeper verification, a one-time Pro upgrade unlocks screenshots, element insertion, advanced image editing, A/B Calculator, and Timeline. See Free vs. Pro for the full comparison.