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WebKit's positions on emerging web specifications
https://webkit.org/standards-positions/
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Web Custom formats for Async Clipboard API #43

Open svoisen opened 1 year ago

svoisen commented 1 year ago

Request for position on an emerging web specification

Information about the spec

Design reviews and vendor positions

Bugs tracking this feature

Anything else we need to know

Previous request for position in webkit-dev: https://lists.webkit.org/pipermail/webkit-dev/2021-May/031855.html

Web custom formats for Async Clipboard API aims to web applications read and write custom, unsanitized, web-originated payloads from the clipboard using a standardized web custom format. Support for this is important for allowing native applications to exchange data with web applications outside the standardized formats.

I'm filing this request because Adobe is interested in this API for supporting copy/paste interop between our web and native applications using our own formats.

tomayac commented 1 year ago

Thanks for filing this, @svoisen! Apple folks: developer-facing documentation for this feature can be found on Chrome Developers.

annevk commented 6 months ago

I discussed this with colleagues and we have concerns about clipboard data that has not been sanitized by WebKit (which will be true for all custom formats) moving between different origins or origins and apps. We could see making an exception for the latter when the app has claimed the origin through associated domains and could therefore be considered "same origin" from the end user's perspective.

From discussion in the Editing WG it's unclear if such a limitation is workable as it could prevent competition between applications so we're a bit unsure about this feature.

144 is related here.

benjamind commented 6 months ago

Would it be possible to consider this API through the lens of an installed PWA? If the user has trusted the app for install, could it then get access to custom formats and delayed clipboard rendering? That would limit the potential for abuse in that the user trusted the app, while still keeping competition open?

annevk commented 1 month ago

I don't think "installation" conveys trust. It's essentially a bookmark, an easy way to get back to something. I might install a game, but that doesn't mean I trust the developer. I just like the game and would like to play it somewhat regularly.