Resource types

Resource-type conditions select requests by their browser resource category.

Fields

• resourceTypes includes the selected types.
• excludedResourceTypes excludes the selected types.

Use one field or the other. Enabled items are combined and duplicate values are removed.

Values

main_frame, sub_frame, stylesheet, script, image, font, object, xmlhttprequest, ping, csp_report, media, websocket, webtransport, webbundle, other.

xmlhttprequest includes requests Chrome classifies as XMLHttpRequest or Fetch traffic. Classification is performed by the browser.

Headerly default

For every rule except allowAllRequests, when neither field contains a value, Headerly explicitly adds every resource type to the registered rule. This keeps rules broadly usable: Chrome's default DNR behavior applies to only a small subset of resource types, which can make a rule appear not to apply.

Headerly does not offer a setting for Chrome's native default behavior. To narrow a rule's scope, add a Resource Types or Excluded Resource Types condition and select one or more values.

allowAllRequests does not receive a default resource-type list. See Allow all requests.