post/edit doesn't say anything about tags. (I guess I can only hope that this works for tags containing hyphens, too.)Īfter that I'd need a way to add and remove tags from that result set. Limits the response to posts with the specified tag I see that the method (or whatever you call it) /post knows the request parameter tag: I'd start this process for every affected tag manually. tag all these posts with y (= a tag without hyphens).select all posts that are tagged with x (= a tag containing hyphens).I'm no programmer, but I'd be willing to dig into it, if I could get some help here as a starting point. So I thought that the Tumblr API might help me. This would be a huge job (700 tagged posts, but more than 1000 in total). I'd have to manually select post after post and look if a certain tag was used, and if so, delete it and add a new one instead. I tried to do it with the 'Mass Post Editor' ( /mega-editor), but it's not possible to select posts by tag. Unfortunately, Tumblr is not willing to globally rename all tags containg hyphens (although these tags are of no use anymore → 404). I have tagged over 700 blog posts with tags containing hyphens, and these tags suddenly stopped working in 2011, because Tumblr decided (without any notice) to forbid hyphens in tags (I guess hyphens are blocked now, because spaces in tags (which are allowed) get changed to hyphens.).

Mass post editor tumblr