2 Part File Manager - Locate upload date and remove file

Thanks for any and all advice.

The 2 parts to this question are:

1. Is there a way of working out when a file was uploaded to Squarespace from either the file manager OR from the URL?
2. Is there a way of being able to 'search' for the file or at least find the file somewhere else in the backend?

A client has been uploading PDF's (for years) as links but wasn't dating the files when loading and now has so many it's causing issues on their site. I've helped them come up with a much better solution to move forward however we're trying to help them clean up historical data.

I know the date of this particular file but in Step 1 - When I look at the link there is little data. 

So if you open the link it ends up here

https://static1.squarespace.com/static/5acea6725417fc059ddcc33f/t/64f6c0a49386bb2b882e5d7e/1693892773506/20230905_M+Coloe+pbvm_History+Made+at+St+Pauls.pdf

Is there a way to determine the date the file was uploaded from this URL? Or a way to determine it somewhere else?

Someone suggested using the 1693892773506 from the URL which through a Human readable date converter like https://www.epochconverter.com/ gives a date which seems to line up. 

Part 2 of the question is that if the file is over X months old we want to delete it.

However, using the same file from before, when you open the cog for the linked file and 'search' for it, nothing loads as per below, and I assume because they have loaded so much stuff there it's struggling to load.

I can file the file if I do not search but just keep pressing 'load more' until I find the file (see below). But as mentioned, they have loaded so many PDF's this is a very (very) long process and for the ones not dated, it will add more complexity to finding it. 

Is there a better way to be able to manage uploaded files as they are not in the asset library and this is the only way I know how to access 'files'.

Thank you

I have been running our K12 Secondary schools website on Squarespace now for 5+ years and I wish they would make a semi-decent file manager.

We must have 100's if not 1000's of old PDF's, DOC's and PPT's but no way to manage/delete these in bulk and I'm sure they are clogging up Squarespace storage along with making our storage slow of browse when linking.

I am not prepared to sit their deleting individual files via the link editor as that's just stupid for our volume.

Maybe one day they will do us all a favour and extend the file manager to support any file type not just media file types.