Collector Extension is a Chrome add-on developed by Juan Elfers that serves as a handy tool for Pokemon TCG collectors. With this extension, users can easily track their collection and identify which cards they have and which ones they still need when browsing online singles sales websites.

To get started, simply visit a collection on Pokellector, such as the Jungle Expansion collection. Once you've visited the collection, it will be automatically loaded into the extension. Any changes you make on Pokellector will also be reflected in the extension's database.

When you visit one of the supported singles sales websites, the extension will differentiate the cards you already have from the ones you don't. It eliminates the risk of purchasing duplicate cards and makes it easier to identify the missing ones.

Please note that initially, most cards will have the label "Missing info" because their collection has not been loaded into the extension. To load a collection, you need to visit it on the Pokellector website. For example, if Charizardappears with "Missing info," you can load the Base Set collection on the Pokellector website.

Currently, the extension has an initial load of 20 collections, including the latest expansions and the original base set. As a result, you may notice that 20 tabs open and then automatically close when you install the extension. To ensure this functionality works, make sure you are logged in to Pokellector.

The developer is actively working on improving the extension to automatically load all collections without the inconvenience of opening multiple tabs.

Supported websites: