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Towards the end of the ’90s, the PDF file format came into sight and, with a bit of experimentation distilling PS (PostScript) files, it quite simply revolutionised how artwork was dispatched for print. Embracing this new way of working, the PDF offered excellent compression rates for print while still being able to supply lossless images. With prepress RIPs (Raster Image Processors) increasingly processing PDF files, EPS-based images for all PDF generated artwork proved to be a solid way forward
There are several ways of doing this, including using libraries like PyPDF2 in Python. PDF documents can come in a variety of encodings including UTF-8, ASCII, Unicode, etc. So, converting the PDF to text might result in the loss of data due to the encoding scheme
Convert Multiple Drawings with Free DWG to PDF Converter. It is a very intuitive tool that can sort in the correct order and bulk export your CAD drawings to PDF. The output file types are PDF, TXT and image formats (TIFF, JPG, PNG)