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# Extension resources

Control access to files and memory in browser extensions.

## Topics

### Access control

[Limiting resource access in web content extensions](/documentation/BrowserEngineKit/limiting-resource-access-in-content-extensions)

Reduce the impact of vulnerabilities in web content extensions by limiting privileges.

[Accessing files in browser extensions](/documentation/BrowserEngineKit/accessing-files-in-browser-extensions)

Grant extensions access to files from within your browser app.

[Attributing memory to a content extension](/documentation/BrowserEngineKit/attributing-memory-to-a-content-extension)

Adhere to operating-system limits on GPU memory use.

[`protocol RestrictedSandboxAppliable`](/documentation/BrowserEngineKit/RestrictedSandboxAppliable)

A protocol that browser extensions implement to opt into a more restricted sandbox.

[`enum RestrictedSandboxRevision`](/documentation/BrowserEngineKit/RestrictedSandboxRevision)

Revisions to the restricted sandbox rules.


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