The resulting PDF will be a flat copy. It may not be text-searchable, but all dimensions and tables will be perfectly legible and printable.
For severely damaged files, tools like , Recoverit , or Kernel for PDF can salvage text and images. These tools do not crack DRM but repair structural corruption.
If you have landed on this page searching for the term you are likely an engineer, quality control manager, or piping designer who has just downloaded a supposedly standard PDF document, only to find it unreadable. You are not alone.