WebPDFLoader has nothing to do with web.

[Michota]

The langchain doc suggests to use blob in WebPDFLoader and as example suggest we need to use file system or download the file from web and convert it to blob in first place, and simultenously it names it places "Web" as first word, and places the docs in the section of
"Web Loaders" which just under the title says

These loaders are used to load web resources. They do not involve the local file system.

Thats contradictory.