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Local first behavior is a big reason I still use Sketch. Nobody can take my documents from me, no matter what.

Sketch is also generally more friendly to people trying to take their Sketch documents elsewhere — the Sketch file format is publicly documented, which has allowed several other apps (including Figma) to be able to read it. Figma has yet to do the same for its format, which reeks of lock-in and rubs me the wrong way.

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You can save Figma files as regular files on your desktop. My app Flinto includes a Sketch import and Figma import feature. I get your point, but just pointing out its not as locked down as you might have assumed.

The difference is that all existing Sketch files are guaranteed to match the file format specification that has been published, whereas Figma could change their file format entirely without telling anyone and suddenly nothing but Figma can read files exported from it until third party devs reverse engineer the new format (which isn’t a given).

Figma would earn a lot of goodwill if they published their specification and assured users and devs in its ecosystem that the format won’t change out from under them. Even then though, they could very easily say one thing and then do another. It’s an unavoidable uncertainty that comes with web apps.

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