For the entry in Thailand citizens of Switzerland and Liechtenstein do not need a visa for touristic and business purposes up to a duration of stay of 30 days (with entry on the country road up to 15 days).
A visa is necessary compelling for longer or non-tourist stays as well as for non-privileged citizens. For this two-coloured passport photos are required in the format 40 x 60 mm which may not be older than 6 months. The passport photo can be adapted with our passport photo generator quickly and simply to the right size. Up to few exceptions the same biometric regulations apply as they are also valid in Switzerland for all identity card documents.
You find the addresses of the Thai embassy in Bern as well as the Consulate in Basel, Geneva and Zurich here, since there is no own website available.
FDFA Travel Advice