iframe[sandbox]

This attribute enables fine-grained control over the capabilities of a document housed within an iFrame.

Verdict

Safe to use

Category

HTML features

Browser support

Can I Use

Works in

IE10+

Should you use iframe[sandbox] in 2026?

Browser support is not nearly high enough to consider this measure alone sufficient for sanitizing output. Use this attribute as part of a defense-in-depth strategy.

Also see [more about implementing iframe[sandbox]](https://bocoup.com/blog/third-party-javascript-development-future#iframe-sandbox) responsibly on Bocoup's blog.

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