The HTTP img-src directive specifies valid sources of images and favicons.

Syntax

Content-Security-Policy: img-src 'none';
Content-Security-Policy: img-src <source-expression-list>;

This directive may have one of the following values:

• 'none'

  • : No resources of this type may be loaded. The single quotes are mandatory.

  <source-expression-list>

  • : A space-separated list of source expression values. Resources of this type may be loaded if they match any of the given source expressions. For this directive, the following source expression values are applicable:

    • <host-source>

    • <scheme-source>

    • 'self'

Examples

Violation cases

Given this CSP header:

Content-Security-Policy: img-src https://example.com/

The following <img> is blocked and won’t load:

<img src="https://not-example.com/foo.jpg" alt="example picture" />

Specifications

Browser compatibility

See also

• <img>