Some HSK test centres give the option of taking an online test (albeit supervised under exam conditions).
What format does this take? Is the audio played on a CD player to the whole room or do you get headphones connected to the computer?
(The audio quality of some of the downloadable mock tests is very low — the ones I have are 11kHz MP3, and this makes comprehension unnecessarily harder.)
I did HSK 4 last June while in the UK and there's a rather rambling/chatty thread about that here, including links to various online mock tests:
https://www.chinese-forums.com/forums/topic/59940-hsk-online-test-at-home-edition-居家网考-may-june-2020-covid-special/
There's also a very short report-back on the experience here:
https://www.chinese-forums.com/forums/topic/20933-taking-the-hsk-already-taken-it-report-in-here/page/26/?tab=comments#comment-469746
– mungouk Mar 20 '21 at 09:43https://www.chinese-forums.com/forums/topic/60106-online-mock-hsk-tests-compared/?tab=comments#comment-469323
– mungouk Mar 20 '21 at 09:43