What the extension reads
When you open a page, the extension notices requests that the page sends to the Meta Pixel endpoint and calls the page makes to its own pixel function. It reads the event name, the pixel ID, the event parameters and the names of any customer fields. It does this in your browser so it can show the events to you.
What the extension stores
For pages that run the pixel, the extension keeps a short record of each event on your device, in the browser extension storage. A record contains the event name, the time, the page path, the parameters, any issues found and the pixel ID. Customer fields are reduced to a field name and a note on whether the value was hashed. Email addresses and phone numbers found in event data or in page addresses are masked before anything is stored. Records older than 14 days are removed automatically. Pages that do not use the pixel are not stored. Your settings are stored in the same way.
What leaves your device
Nothing. The extension makes no network requests of its own. It has no server, no account, no analytics and no advertising. It does not share data with anyone. When you export JSON or CSV, the file is created in your browser and saved to your computer.
Your choices
You can clear the history for the current site or for all sites at any time from the settings sheet. Removing the extension deletes everything it stored.
Notifications
Error notifications are off by default. If you turn them on, the extension shows a notification when it finds an error in an event, at most once a minute per tab.
Permissions
The extension asks for access to all websites because the Meta Pixel can be installed on any site. It uses that access only to see pixel requests. It does not read page text, forms or passwords and does not change pages.
This website
This website sets no tracking cookies and runs no analytics. It only remembers in your browser that you closed the cookie notice.
Children
The extension is a developer tool and is not directed at children.
Affiliation
Meta Pixel Debug Radar is an independent tool and is not affiliated with Meta. Meta and Meta Pixel are trademarks of their owner.
Contact
Questions can be sent to support@meta-pixel-radar.com.