Automate File Info Metadata extractions in Photoshop

Our organization had over 350K records in PDF, Word, Image and other. We needed a way to ingest each record, to scan the content of each, and auto apply metadata (and keywords) against items found within the contents. Centralpoint by Oxcyon allowed us to do this, auto applying very specific (N-tiered, Treeview Taxonomy (or Metadata) as each record was imported. Centralpoint's Data Transfer routine (which can be scheduled to run periodically against any source) was used, which supports File Folders, SQL, Oracle, ODBC, XML, Json, Excel and more. For files which are auto-ingested by Centralpoint (like Word, XLS, PDF and PPT), we are able to glean the entire contents of 'each' document (this is how the contents get gleaned to apply the appropriate taxonomy for each record), resulting in completely search-able (PDF and Word). This led to our organization (37K employees) completely migrating from Sharepoint, as the records (still securely protected, via Centralpoint's AD/SAML integration) are searched by each user based on their role. The contents of each record can also be leveraged when user's provide a keyword search, so that as they type, (Centralpoint searches the contents of each file ingested), to auto suggest the right match (not just based on the title of the document), but on it's contents! Video found here: https://www.oxcyon.com/centralpoint-dxp/our-thoughts/autoapply-metadata-to-structured-unstructured-data-16

You can use this script to put the info in the description field into a text layer. Of course, you would want to change the script to format the size of the font, and the position.

#target photoshop
var doc = activeDocument;
var txtLayer = doc.artLayers.add()
txtLayer.kind = LayerKind.TEXT;
var textItemRef = txtLayer.textItem;
txtLayer.position = [100,100];
textItemRef.contents= doc.info.caption
textItemRef.size=50

May be you should try Javascript?

The scripting subforum may be of help.