njitram

Ah, I didnt realize that, it was one of the main features I was going for. But indeed, 128px is very small. Will create my own MU plugin to fix this I think by getting the image somewhere else.

For the JS error, indeed it said:

plugin.js?wp-mce-49110-20201110:119 Uncaught TypeError: Cannot read properties of undefined (reading 'replace')
at parseShortcode (plugin.js?wp-mce-49110-20201110:119:18)
at editor.wpSetImgCaption (plugin.js?wp-mce-49110-20201110:827:10)
at tN. (plugin.js?wp-mce-49110-20201110:842:27)
at c.fire (tinymce.min.js?ver=49110-20201110:2:197006)
at tN.fire (tinymce.min.js?ver=49110-20201110:2:197532)
at $w (tinymce.min.js?ver=49110-20201110:2:340139)
at tN.setContent (tinymce.min.js?ver=49110-20201110:2:347647)
at Object.success (rcno-reviews-google-books.js?ver=1.64.0:94:66)
at fire (jquery.js?ver=3.6.1:3500:31)
at Object.fireWith as resolveWith

Oh thats nice, only problem with them it seems that custom fields are supported only in the premium version of those tools, which is a bit steep price for a hobby website. Alternatively, would I be able to use the REST API as well for importing those reviews?