Text in Pdf File is Not Visible

[drweb86-work]

Hello

Upon converting file
file_from.docx
to pdf with UseOffice
file_to.pdf
I'm seeing nothing when using Pdf.Js as viewer instead of text

[Snuffleupagus]

WFM, when opening that file with https://mozilla.github.io/pdf.js/web/viewer.html.

From the screen-shot, this appears to be a custom PDF.js implementation. However, since most of the information requested in https://github.com/mozilla/pdf.js/blob/master/.github/ISSUE_TEMPLATE.md is missing, it's difficult to help here.
Please provide all of the requested information, and if this issue is limited to a custom implementation you'll need to provide a link it.

[drweb86-work]

Hello

Web browser and its version: Chrome 61.0.3163.100 (Official Build) (64-bit)
Operating system and its version: Windows 10
PDF.js version: pdfjs-dist 1.10.97

this.pdfDocument
.getPage(this.currentPage)
.then((page: PDFPageProxy) => { here we're rendering at canvas })
Warning: Error during font loading: this._map[charCode].charCodeAt is not a function

[Snuffleupagus]

Please try opening your file with the default viewer available at https://mozilla.github.io/pdf.js/web/viewer.html (using the "Open file" button on the right-hand side of the toolbar); does it render correctly there?

Again, based on your screen-shot, if this is only an issue with a custom PDF.js implementation, you'll need to provide access to it (as requested in both https://github.com/mozilla/pdf.js/blob/master/.github/ISSUE_TEMPLATE.md and https://github.com/mozilla/pdf.js/blob/master/.github/CONTRIBUTING.md).

[Snuffleupagus]

Warning: Error during font loading: this._map[charCode].charCodeAt is not a function

Based on this edit, the issue seems to be that you're using a library that adds properties to Arrays (or maybe Objects) in an incorrect way.
Please refer to the discussion in issues such as #7064, #8495, #8711, of which this is thus a duplicate.

[drweb86-work]

Hi
I manged to fix this issue

The problem was that pdf.js does not render pdf by itself (!). There was a file app.worker.js which was needed to be added (!!!)

#7612

I followed instructions of wojtekmaj and it started working!