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Cake day: March 24th, 2024

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  • You basically can’t if your instance was set up before 0.19.4, as there won’t be any association between users and uploads for older uploads. You also can’t do this without breaking thumbnails everywhere unfortunately.

    The latest Lemmy version has a fix where thumbnails now are actually stored at a reasonable resolution for thumbnails, but old thumbnails may be quite large, and this does not retroactively shrink older thumbnails.

    It’s possible to pull image aliases from the DB and ignore them when iterating over aliases within pict-rs, but you these will only be manual uploads, not automatic uploads like generated thumbnails. For posts by local users, deleting thumbnails will also end up breaking them for 0.19.5+ instances, as they should reuse the original thumbnail url.




  • I’m not familiar with n8n but it’s fairly straightforward on the API side.

    You’ll need a session token, also known as JWT, which you can get from logging in.

    You typically don’t want to do a login for every post, so you’ll want to store that as a persistent value.
    For authentication, you can pass the header authorization: Bearer {jwt}, with {jwt} being the session token.

    https://join-lemmy.org/api/classes/LemmyHttp.html contains the API documentation.

    You’ll need to figure out the id of the community that you want to post to.

    If you need to look it up, you can use getCommunity to fetch its details. Afterwards you can use createPost to submit it.

    The form links for the methods explain the request body json values that should be provided.





  • simply put: no

    most fediverse software has its own API specific to how that application works. in some cases different fediverse software may be sharing a common API, which is typically a result of either a reimplementation (e.g. the Sublinks project is working on a reimplementation of the Lemmy API) or the result of a fork, where the previous API has been inherited and is typically built on top of.

    It should also be noted that while Lemmy and Mastodon both use ActivityPub federation for interoperation, they have significantly different internal structures for how data is stored and represented to clients. I don’t know if mastodon supports vote federation with Lemmy at this point, but if it doesn’t do that currently, then using an alternative frontend won’t help you. It would likely be possible to build a Mastodon client that has a better thread view though, but it’d still have to be something built for the Mastodon API specifically.