[Feature]: Unable show the words in Chinese whiling translated into canvas

[sdeass]

Is the feature relevant to the Firefox PDF Viewer?

No

Feature description

Unable show the words in Chinese whiling translated into canvas
I would like to show the canvas within Chinese.
I had been dropped the pdf which name is demo.pdf that show numbers only.
Please guideline me which Api and settings.

  <script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.worker.min.js"></script>

import React, { useRef } from 'react';
import * as pdfjsLib from 'pdfjs-dist';
pdfjsLib.GlobalWorkerOptions.workerSrc = //cdnjs.cloudflare.com/ajax/libs/pdf.js/${pdfjsLib.version}/pdf.worker.min.js;

function Container(_, ref) {
const createAttribute = useRef(null);
const canvRef = useRef();
const onDragStartChange = async (event) => {
event.preventDefault();
const files = Array.from(event.dataTransfer.files);
// //todo 支持多个
const oo = U

RL.createObjectURL(files[0]);
const loadingTask = await pdfjsLib.getDocument(oo);
const source = await loadingTask.promise;
const canvas = canvRef.current;
const pdf = source;
for (let i = 1; i <= pdf.numPages; i++) {
let page = await pdf.getPage(i);
let viewport = page.getViewport({ scale: 1.5 });
canvas.height = viewport.height;
canvas.width = viewport.width;
await page.render({
canvasContext: canvas.getContext('2d'),
viewport: viewport,
}).promise;
}
};

return (
<>

<div className="excel_upload" onDrop={(event) => onDragStartChange(event)}>
<input
type="file"
accept="pdf"
ref={createAttribute}
// onChange={onHandleChange}
/>

</>
);
}

export default Container;

Unable show the words in Chinese whiling translated into canvas

demo.pdf

Other PDF viewers

No response

[sdeass]

Please guideline me which Api and how to set the settings.