Firefox Extract API

A focused use case

Build a user-controlled extraction step for approved pages, with a preview of the record and no unrelated background collection.

A practical workflow

Define the permitted host scope, choose the required extension capabilities, and separate page content from privileged operations. Test denied permissions as carefully as the successful path.

An example record contract

These fields illustrate the decisions to make before implementation. Adapt the names and required values to the receiving system; the table is not a promise of a live endpoint or a provider-specific response.

Limits worth keeping visible

Extension API and host permissions are distinct design concerns. Avoid assuming permission behavior is identical across browsers or manifest configurations.

Before increasing the workload

Run a small, authorized test set through the whole path, including the receiving application. Keep accepted, rejected, and incomplete outcomes distinguishable. A result should retain the context needed to explain its meaning after it leaves the extractor.

Continue with Website Extract API: From HTML to Useful Records for the full implementation discussion, and use the sample contract documentation to review the shape of a handoff.