server-tools/html_text/readme/USAGE.md

This module just adds a technical utility, but nothing for the end user.

If you are a developer and need this utility for your module, see these examples and read the docs inside the code.

Python example:

def some_method(self):
    # Get truncated text from an HTML field. It will 40 words and 100
    # characters at most, and will have "..." appended at the end if it
    # gets truncated.
    truncated_text = self.env["ir.fields.converter"].text_from_html(
        self.html_field, 40, 100, "...")

QWeb example:

<t t-esc="env['ir.fields.converter'].text_from_html(doc.html_field)"/>