Can I use
?

Built-in PDF viewer

- OTHER

Support for an PDF viewer that is part of the browser, rather than requiring a PDF file to be opened in an external application.

IE

  1. 5.5 - 10: Not supported
  2. 11: Partial support

Edge

  1. 12 - 14: Support unknown
  2. 15 - 86: Supported
  3. 87: Supported

Firefox

  1. 2 - 18: Not supported
  2. 19 - 82: Supported
  3. 83: Supported
  4. 84 - 85: Supported

Chrome

  1. 4 - 14: Support unknown
  2. 15 - 86: Supported
  3. 87: Supported
  4. 88 - 90: Supported

Safari

  1. 3.1 - 3.2: Support unknown
  2. 4 - 13.1: Supported
  3. 14: Supported
  4. TP: Supported

Opera

  1. 9 - 11.6: Not supported
  2. 12 - 71: Supported
  3. 72: Supported

iOS Safari

  1. 3.2 - 13.7: Supported
  2. 14: Supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1 - 4.4.4: Not supported
  2. 81: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 59: Not supported

Chrome for Android

  1. 87: Not supported

Firefox for Android

  1. 83: Not supported

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4 - 12.0: Not supported
  2. 13.0: Not supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Not supported

KaiOS Browser

  1. 2.5: Not supported

When displaying PDFs inline rather than separately, iOS Safari will only display the first page of the document.

Resources:
PDFObject - JavaScript utility to embed PDF documents in HTML