It will automatically if the target site doesn’t block the request (Cloudflare, rate limits, etc). Per community rules and best practice, the original article URL must always be the post url; uploading a thumbnail will override that (currently).
Once LW updates past 0.19.6 or so, there should be a field for custom thumbnail where you can do so (in addition to the post URL). I don’t know how the rules apply to that (not yet relevant for LW), but I would hope people wouldn’t abuse that to post unrelated images. Prob something to bring up to the mod team once LW updates to a version that supports custom thumbnail images during post creation.
IMO, just drop the original link. If the thumbnail works, it works. If it doesn’t, it doesn’t.
You know, I have no idea.
I think it depends on the linked-to servers.
If the server thinks the Lemmy thumbnail/summary generator is a bad bot, it will not return a thumbnail. If it’s actually a decent web server, I think the Lenny instance will generate & distribute a thumbnail automatically and attach a summary.
I presume this is handled by the posts hosting instance.
I’ve noticed some sites that get linked to don’t have a thumbnail and some sort of “prove you aren’t a bit” subtext/caption.
And others work fine
Reuters is not a fan of VPN’s and scrapers. The Lemmy image search bot fails to scrape their thumbnails. Newer Lemmy versions have a manual option to fix this but .world needs to update first.
Should submitters upload thumbnails or will it fetch one automatically ?
It will automatically if the target site doesn’t block the request (Cloudflare, rate limits, etc). Per community rules and best practice, the original article URL must always be the post url; uploading a thumbnail will override that (currently).
Once LW updates past 0.19.6 or so, there should be a field for custom thumbnail where you can do so (in addition to the post URL). I don’t know how the rules apply to that (not yet relevant for LW), but I would hope people wouldn’t abuse that to post unrelated images. Prob something to bring up to the mod team once LW updates to a version that supports custom thumbnail images during post creation.
IMO, just drop the original link. If the thumbnail works, it works. If it doesn’t, it doesn’t.
You know, I have no idea.
I think it depends on the linked-to servers.
If the server thinks the Lemmy thumbnail/summary generator is a bad bot, it will not return a thumbnail. If it’s actually a decent web server, I think the Lenny instance will generate & distribute a thumbnail automatically and attach a summary.
I presume this is handled by the posts hosting instance.
I’ve noticed some sites that get linked to don’t have a thumbnail and some sort of “prove you aren’t a bit” subtext/caption.
And others work fine
Reuters is not a fan of VPN’s and scrapers. The Lemmy image search bot fails to scrape their thumbnails. Newer Lemmy versions have a manual option to fix this but .world needs to update first.