Is there a way to all pages information under a folder?

You can achieve this by Query debugger Tool as suggested by Scott
http://localhost:4502/libs/cq/search/content/querydebug.html

Query

type=nt:base

path:/content/AEM63App/en

property:jcr:title

property.operation : exists

p.hits=selective

p.nodedepth

p.properties=jcr:path jcr:title

p.limit : 21

you can modify above query based on your search criteria.

Please refer for more info Query Builder API - docs.adobe.com 

when you execute this you will be getting an option to get Json query via JSON QueryBuilder Link, when you hit this link you'll get the results like below:

{

   "success":true,

   "results":21,

   "total":21,

   "more":false,

   "offset":0,

   "hits":[

      {

         "jcr:path":"/content/AEM63App/en/travel/jcr:content",

         "jcr:title":"Travel"

      },

      {

         "jcr:path":"/content/AEM63App/en/community/jcr:content",

         "jcr:title":"Our Community"

      },

...

]

you can parse this Json and use wherever you want.

hope this will help.

Thanks

Arun