How large are Visa and Multiple Reentry stamps in Thailand?

The size of Visa and Multiple Reentry stamps in Thailand generally takes up about 1/2 a page of the passport. A multiple re-entry permit can save space as it only requires an arrival stamp, which is roughly 1/6 of a page. Frequent travelers may need to consider getting additional pages in their passport due to the varying requirements of different countries and the number of stamps.