Get coordinates and dimensions of a desired string or characters

Hi,

I use SaasPose to convert MS Word documents into PDF.

I would like to achieve the following:
1. On my converted document Sample.pdf, I have a string "Sireesha" repeated in different parts of the PDF document on different pages.
2. I would like to get the x,y, height, and width of a specific set of characters in a PDF.

Is this possible with any API calls?