Still not working, only getting a 404 on the preview. Would exactly what I am looking for if it worked.

Still receiving 404 error at least a year after other reviewers reported it

ez bizony egy nagy lófütty! csak 404-es ablak és más semmi

404 or loading, it's github page is also 404

not working atm w FF v82, "error 404 url is incorrect" popup.