Get and set metadata of the document

[SivaNithish]

Webviewer version : 8.7.0

brief summary of your issue:
How to modify document metadata

Hi, i’m working with React in TS, and i’m trying to show and modify the filename or get the author and others stuff like that.

And i’m trying to find a way to add custom properties like in Adobe Reader (Document Properties > Custom > Custom Properties)

I tried to use PDFDocInfo to set the title.

Const test = new PDFNet.PDFDocInfo();
test.setTitle('test');
const title = test.getTitle();

console.log(title);

and then i tried this =>

await title.then( (doctitle) => {
        console.log(doctitle)
      })

and i can’t find a way in a first case, to use thoses informations and manipulate them.

What i’m doing wrong ? and is there a way to have custom properties like in adobe reader ?

[system]

Hello, I’m Ron, an automated tech support bot

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:

Guides:

• Creating user-defined bookmarks in WebViewer - Quick Bookmarking
• Overview of WebViewer’s JavaScript Library - Summary
• Merge Form Data File (FDF or XFDF) to PDF Forms using JavaScript - Merging XFDF directly into the PDF
• Optimize & reduce lib folder for WebViewer - Optimize via script

APIs:

• Extension
• Core - xodOptions
• UI - dangerouslySetNoteTransformFunction(noteTransformFunction)

Forums:

• PDF.js Express 8.7.0 UI throws lots of errors with Vue.js
• Annotation “AnnotationCreateSticky” custom icon
• Tabs and Annotation Manager not keeping Annots. separate

[dfelix]

Hello @SivaNithish

In order to set custom properties, you can use something like this code snippet below:

  const { documentViewer } = instance.Core;

  documentViewer.addEventListener('documentLoaded', async () => {
    const pdfDoc = await documentViewer.getDocument().getPDFDoc()
    const sdfDoc = await pdfDoc.getSDFDoc();
    const trailer = await sdfDoc.getTrailer();
    const info = await trailer.findObj("Info");
    if (info !== null) {
      await info.putString("My Key", "Hello");
    }
  })