Finding the unused components/templates from a legacy CQ project

As @bsloki mentioned write a simple query in your aem @ http://localhost:4502//libs/cq/search/content/querydebug.html

Here is one sample query:

path=/content/blog type=cq:PageContent property=cq:template property.value=/apps/blog/templates/homepage

If you need help, refer to query builder documentation @ https://docs.adobe.com/docs/en/cq/5-6-1/dam/customizing_and_extendingcq5dam/query_builder.html

bsloki wrote...

You can write a query using sling:resourceType in the path '/content/<project> for the component / templates you are looking for. If it returns '0', then it will not be used

 

Is there a way to list out all used/unused templates from the content folder? This would help us to search with templates names one by one.

Thanks in advance

There is nothing OOB, you will have to write your own custom query for this.

ex: See if you can use some joins or you can fetch all the templates and loop through the same query for each template