Can I use
?

Built-in PDF viewer

- OTHER

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

Chrome

  1. ﹖ 4 - 14: Support unknown
  2. ✅ 15 - 137: Supported
  3. ✅ 138: Supported
  4. ✅ 139 - 141: Supported

Edge

  1. ﹖ 12 - 14: Support unknown
  2. ✅ 15 - 137: Supported
  3. ✅ 138: Supported

Safari

  1. ﹖ 3.1 - 3.2: Support unknown
  2. ✅ 4 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ 26.0 - TP: Supported

Firefox

  1. ❌ 2 - 18: Not supported
  2. ✅ 19 - 139: Supported
  3. ✅ 140: Supported
  4. ✅ 141 - 143: Supported

Opera

  1. ❌ 9 - 11.6: Not supported
  2. ✅ 12 - 116: Supported
  3. ✅ 117: Supported

IE

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

Chrome for Android

  1. ❌ 138: Not supported

Safari on iOS

  1. ✅ 3.2 - 18.4: Supported
  2. ✅ 18.5: Supported
  3. ✅ 26.0: Supported

Samsung Internet

  1. ❌ 4 - 27: Not supported
  2. ❌ 28: Not supported

Opera Mini

  1. ❌ all: Not supported

Opera Mobile

  1. ❌ 10 - 12.1: Not supported
  2. ❌ 80: Not supported

UC Browser for Android

  1. ❌ 15.5: Not supported

Android Browser

  1. ❌ 2.1 - 4.4.4: Not supported
  2. ❌ 138: Not supported

Firefox for Android

  1. ❌ 140: Not supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ❌ 13.52: Not supported

KaiOS Browser

  1. ❌ 2.5: Not supported
  2. ❌ 3: 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