Bol.com cadeaukaarten totaal checker is a Chrome extension developed by Jeroen Peters. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. As the name suggests, this extension allows users to view the total remaining value of their Bol.com gift cards.

To use the extension, simply install it in your browser. Once installed, when you log into your Bol.com account and visit the gift card page, the extension will be activated. It will then add the total remaining value at the top of the table displaying your gift cards.

It is important to note that this extension is not an official Bol.com extension and Jeroen Peters is not affiliated with Bol.com other than being a customer with a significant number of gift cards in their account.

In terms of privacy, the extension only reads the remaining value of unused or partially used gift cards on the specific page. It does not require broad permissions, and no data is stored or transmitted outside of your browser on that particular page.

The source code of the extension, `bol-restwaarde-check.js`, is written in JavaScript. The icons used in the extension are credited to monkik from FlatIcon.