Do I need to upload the entire 3-page declaration for a 60-day single-entry tourist e-visa for Thailand, or just the last signed page?

When applying for a 60-day single-entry tourist e-visa for Thailand, you should upload the documents as required. One comment suggests uploading only what is specifically requested, while another notes that their declaration was only one page. Therefore, it seems you may only need to submit the last page with your signature unless instructed otherwise.