Hello, I am Rana(Professional Freelancer at Fiverr). I'm an expert in Web Research/Internet Research, Microsoft Excel, Google Sheet, Lead Generation, Data Entry, Excel entry First Think Is I am Not understand The question Properly. If you want Covert (i mean Turn in) you PDF File into a Microsoft Word (which is larger than 512 MB) You Can Do it manually OR You Can Hire a Freelancer Or Help By Thirth party Software Or Website. Here Is Some Example. For Software You Can Use— Delete Pages In Pdf 2. Foxitsoftware 3. AbleWord 4. Kernel for PDF to Word For Website, You Just Search On Google. Those all of the maximum you needed buy their membership Or Search On Torrent. Another Some Super tip. you can also do it By Google Drive (google spreadsheet). instruction are. Using Google Docs 1. Log into Google Doc 2. Click the folder icon. 3. Click Upload. 4. Click Select a file from your computer. 5. Select the PDF and click Open. 6. Click Open with and select Google Docs. 7. Click File → Download as. 8. Select Microsoft Word. (This Way you Can Convert a Big PDF file) Hope It will be Helpfully.