The list of AMP Caches is available at https://cdn.ampproject.org/caches.json

This could be pulled in dynamically rather than hard-coding each AMP Cache in \AMP_HTTP::get_amp_cache_hosts():

https://github.com/ampproject/amp-wp/blob/9e049f6554b69e06284ead57d13ef416226a51ec/includes/class-amp-http.php#L191-L239

This is low priority because the list of caches changes infrequently.

Issue Overview

Just some possible documentation help. This only works on my MacOS environment, but may be useful elsewhere. I know adv

Task Description

Work on the eyedropper feature is tracked in #262, and a prototype has been explored in #3007 — but it's still not implemented.

For this reason it's probably best to put the eyedropper behind a feature flag to prevent user confusion. Right now it's just a disabled button in the color picker.

<img width="223" alt="Screenshot 2020-08-18 at 20 09 44" src="https://user-ima

When optimizer used in conjuction together with optimizer-express it's not possible to pass params to optimizer's transformHtml method, only configuration to the optimizer constructor.

And while some transformers honor those configurations:
https://github.com/ampproject/amp-toolbox/blob/efe5775c5ff93ebacd6f7bd336ba02d829eca579/packages/optimizer/lib/transformers/AmpBoilerplateTransformer.js#