XFA - How to download fonts?

[alexnur]

Hi!

Configuration:

• Firefox 115.9.1esr/ Yandex 22.11.0.2419 / Chrome 109.0.5414.168 :
• Windows 8.1:
• PDF.js version 4.0.379:
• Is a browser extension: no extension

The vast majority of PDF documents display fine. But there is a small part of the documents (I can’t post them, this is prohibited by the employer’s policy) looks like this:

"To view the full contents of this document, you need a later version of the PDF viewer. You can upgrade to the latest version of Adobe Reader from ..."

Moreover, after rendering there is always 1 page, although there are more pages in the document.

If you add
enableXfa: true
in pdfjsLib.getDocument, then the number of pages in the document is already correct, but the document is empty, and the following message is displayed in the browser console:

Warning: XFA - Cannot find the font: Times New Roman
util.js:370 Warning: XFA - Cannot find the font: Myriad Pro
util.js:370 Warning: XFA - Cannot find the font: Arial
util.js:370 Warning: Font "Myriad Pro-Regular" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Myriad Pro-Bold" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Myriad Pro-Italic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Myriad Pro-BoldItalic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-Regular" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-Bold" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-Italic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-BoldItalic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-Regular" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-Bold" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-Italic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-BoldItalic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Regular.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Bold.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Italic.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
Warning: fetchStandardFontData: failed to fetch file "LiberationSans-BoldItalic.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Regular.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Bold.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Italic.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-BoldItalic.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Regular.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Bold.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-Italic.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".
util.js:370 Warning: fetchStandardFontData: failed to fetch file "LiberationSans-BoldItalic.ttf" with "UnknownErrorException: The standard font "baseUrl" parameter must be specified, ensure that the "standardFontDataUrl" API parameter is provided.".

I add

standardFontDataUrl: "http://localhost:2329/Scripts/plugins/pdf.js/standard_fonts/"
in pdfjsLib.getDocument, The document is still empty, the number of pages is correct, but there are fewer warnings in the browser console:

Warning: XFA - Cannot find the font: Times New Roman
util.js:370 Warning: XFA - Cannot find the font: Myriad Pro
util.js:370 Warning: XFA - Cannot find the font: Arial
util.js:370 Warning: Font "Myriad Pro-Regular" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Myriad Pro-Bold" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Myriad Pro-Italic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Myriad Pro-BoldItalic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-Regular" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-Bold" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-Italic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "Arial-BoldItalic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-Regular" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-Bold" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-Italic" is not available -- attempting to fallback to a default font.
util.js:370 Warning: Font "PdfJS-Fallback-BoldItalic" is not available -- attempting to fallback to a default font.

I tried adding the arial font, in ttf and svg formats to the http://localhost:2329/Scripts/plugins/pdf.js/standard_fonts/ folder, but there were no changes in the console or with the display of the document. Still a warning on Arial:

...
util.js:370 Warning: XFA - Cannot find the font: Arial
...

I also tried adding the font via ccs, but this did not solve the problem:

      @font-face {
            font-family: "Arial";
            src: url("http://localhost:2329/Scripts/plugins/pdf.js/standard_fonts/Arial_font.svg") format("svg");
            font-weight: normal;
        }

How to download fonts and display the document?