Preserve-Layout PDF Text Extraction

I have a PDF made up of live, selectable text—no scanned pages or embedded images— and I need every word pulled into a plain-text file while still mirroring the original page flow. Paragraph breaks, line wraps, tables, and spacing should look just as they do now; the only extra touch I require is that existing bold and italic words stay marked as such (Markdown, HTML tags, or another lightweight convention is fine as long as you note which one you use).

Deliverables
• One plain-text file containing the full content
• Bold and italic emphasis accurately tagged
• Page-by-page structure reflected so the layout reads the same as the PDF

I will spot-check random sections against the source PDF to confirm both the layout fidelity and the emphasis tags. Let me know your preferred extraction tool or script language, expected turnaround, and any clarifying questions you have before you start.