[Tracking] Font Library. Stage 2: Fonts Library extensions

[matiasbenedetto]

Tracking issue for the Font Library.
Stage 2: Google fonts collection and Font Library extensions

What ?

Add the ability to install Google fonts.
Make the font library extensible providing an API to add font collections to be installed by the users.

To do:

• Font Library: Some installed Google fonts don't display in editor or frontend #54706

Needs discussion

• Font Library: No message appears when pressing the Update button #54601

In Progress:

• Font Library: unregister font collection #54697
• Font Library: indicate an error is occurring when connecting to google fails #54798
• Font Library: fix endpoint permissions #54751
• Font Library: .otf font files are rejected. #54759
• Font Library: replace font preview URLs from provosional to wporg CDN URLs #54685
• Font Library: replace snackbar error notices with new component #54504
• Host font SVG previews on wporg
• Font Library: load collection data from a URL #53992
• Font Library: Font Collection backend #54098
• [Font Library] Google fonts collection: generate SVG previews and add them to the list #54038
• Font Library: adding docs #54477
• [Font Library] Frontend: Load font collections in the frontend #54040
• [Font Library] Frontend: Load SVG previews instead of font files #54039
• Font Library: Has extra space in the modal when there are no installed fonts. #54592
• Font Library: remove upload_mimes filter after uploading fonts #54647
• Font Library: Add a disclaimer/notice saying the fonts will be downloaded from third-party sources. #53882
• Font Library: where to store the list of Google Fonts? #52795

Dismissed

• Font Library: include a system fonts collection by default. #54186

Links

Stage 1: #52698
Stage 3: #53926

[hellofromtonya]

With the Fonts Library having Google Fonts and the ability for users to upload font files, I suspect the vast majority of font needs are covered. Thus, IMO this stage should wait until there's a real need or ask from extenders to provide a way for other fonts to be presented for user consideration.

[priethor]

@juanmaguitar, these extensibility points would benefit from outreach & feedback with extenders. Can you put it on your radar for the next months?

[matiasbenedetto]

Added a PR that implements simple extensibility options to add new font collections from plugins for example.
#53816

I think this won't be just useful for plugins but also is a good way to standardize the way we register the font collections that are intended to be in core for example the Google one.

[matiasbenedetto]

With the Fonts Library having Google Fonts and the ability for users to upload font files, I suspect the vast majority of font needs are covered.

I moved the Google fonts integration to the scope of this issue for 3 main reasons:

• Treating it as any other font collection helps us to standardize the API for other collections.
• Reduce the scope of Stage 1 and make it easier to handle.
• Avoid Google fonts-related discussion on the first issue that could delay part of the work.