To check if fusedeck has been installed and executed you can set up a simple bookmark. Then visit the page and click on your bookmark. You will get the result immediately.
Create a new Bookmark by visiting www.fusedeck.com for example and save it as your bookmark.
Edit the bookmark by right clicking it and choose "edit" or in German "bearbeiten"
Change the URL to the code below:
Code
javascript:try{var fdProperties=Object.keys(FuseDeck.properties),fdDL=Object.keys(FuseDeck.dataLayers),text="Result: ";for(let e=0;e<fdProperties.length;e++)text+="\rfusedeck found: "+fdProperties[e];if(window.FuseDeckHelper&&(text+="\rfusedeckHelper found"),fdDL)for(let e=0;e<fdDL.length;e++)text+="\rfusedeck DataLayer: "+fdDL[e];if(window.FuseDeckHelper&&window.FuseDeckHelper.FuseDeck.hasCookieBlocker()&&(text+="\rfusedeck Consent Manager available"));alert(text)}catch(e){alert("fusedeck not found")}