Use OCR Software (Optical Character Recognition), like:

• Adobe Acrobat Pro

• Google Drive (with Google Docs)

• Free tools like OCRmyPDF or Smallpdf

Steps with Adobe Acrobat Pro (example):

• Open the PDF in Acrobat.

• Go to Scan & OCR tool.

• Click Recognize Text → In This File.

• Save the PDF — it’s now searchable with overlaid text.