How can I see how many posts are tagged with certain tag combinations? I know we can check the Wiki to see how many posts weere given a certain tag. Like domestic_cat for example has 137339 posts tagged as such. But how can I see, for example, how many posts are tagged with cat, outside and solo?

There isn't really a "native" way to do that, but you can get a pretty accurate approximation.

My userscript reports the total number of posts on any given search: https://i.imgur.com/7Mdkeb0.jpg
It fetches the number of result pages, subtracts 1 from it, and multiplies that number by the user's chosen number of posts per page. Then, it adds the number of posts on the last result page.

You can do the same thing manually. Or just simplify this to <number of pages> * <posts per page> for a rougher estimate.
Of course, since the page numbers don't go higher than 750, you are limited to tag combinations with less than 240,000 posts using this method.

bitwolfy said:
There isn't really a "native" way to do that, but you can get a pretty accurate approximation.

My userscript reports the total number of posts on any given search: https://i.imgur.com/7Mdkeb0.jpg
It fetches the number of result pages, subtracts 1 from it, and multiplies that number by the user's chosen number of posts per page. Then, it adds the number of posts on the last result page.

You can do the same thing manually. Or just simplify this to <number of pages> * <posts per page> for a rougher estimate.
Of course, since the page numbers don't go higher than 750, you are limited to tag combinations with less than 240,000 posts using this method.

Thank you for helping! (ﾉ◕ヮ◕)ﾉ*.✧