"text/pdf" is not a valid MIME media type for PDF

[petervwyatt]

There are two places in the HTML specification that refer to text/pdf:

1. https://html.spec.whatwg.org/commit-snapshots/20d448c784d4fd3cd2802a11af386fff31973457/#process-a-navigate-fetch

2. https://html.spec.whatwg.org/commit-snapshots/20d448c784d4fd3cd2802a11af386fff31973457/#pdf-viewing-support

RFC 8118 only defines application/pdf as does the official IANA list of registered media types. There is no text/pdf registered with IANA.

Furthermore PDFs must always be treated as binary files, not text, as they contain precise byte offsets and binary data, and altering line endings or other edits can render them invalid. This is what is defined in the latest ISO 32000-2 specification for PDF.

Please remove all mentions of text/pdf from HTML as this is invalid and incorrect.

[domenic]

Nah, this is what browsers implement, so it's what's specced and tested. You're free not to use it if you don't want to!