srcdocBaseline · Widely available

The srcdoc attribute for the <iframe> HTML element sets a string of HTML to embed in the document. The value of srcdoc overrides loading a document from the src attribute.

Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Jan 15, 2020. Widely available since Jul 15, 2022.

How to use ↓Compare browsers

Browser support

DesktopChrome

1–19Not supported

20+Supportedsince Jun 26, 2012

Current: 155

Edge

12–18Not supported

79+Supportedsince Jan 15, 2020

Current: 154

Firefox

1–24Not supported

25+Supportedsince Oct 29, 2013

Current: 157

Safari

1–5.1Not supported

6+Supportedsince Jul 25, 2012

Current: 27

MobileChrome Android

18–18Not supported

25+Supportedsince Feb 27, 2013

Current: 155

Firefox Android

4–24Not supported

25+Supportedsince Oct 29, 2013

Current: 157

Safari iOS

1–5Not supported

6+Supportedsince Sep 10, 2012

Current: 27

How to use

This feature is Baseline widely available — use it freely, no fallback needed.

Example

Full syntax and examples are on MDN: srcdoc.

Feature detection

JS · check before using

if ("HTMLIFrameElement" in globalThis && "srcdoc" in HTMLIFrameElement.prototype) {
  // HTMLIFrameElement.srcdoc is available
}

Sub-features

Support for each part of the feature (2). The overall table above shows when the whole feature works.

Sub-feature	Chrome	Edge	Firefox	Safari	Chrome Android	Firefox Android	Safari iOS
HTMLIFrameElement.srcdoc	20	79	25	6	25	25	6
iframe.srcdoc	20	79	25	6	25	25	6

Browser support

How to use

Example

Feature detection

Documentation (MDN)

Specification

Usage share

Sub-features