Do I need a passport photo for a 30-day extension on my tourist visa in Thailand?

Not sure about the passport photo but they wont keep your passport. If you're entitled to the extention you'll get it there and then.

>Do I need a passport photo for the extension

I recommend trying to get a 60 day extension of stay based on unable to travel due to COVID-19. You will need:

1. Your passport and:

a. a copy of your data ("picture") page

b. a copy of your most recent visa (if you have one)

c. a copy of your most recent stamp

d. a copy of your departure card

2. A TM30, filed in the immigration office.

3. The forms (each immigration office may have different forms)

4. A letter from your embassy saying you can not return, OR a print out from your embassy saying they don’t issue the letters.

5. 2x passport pictures

6. 1,900 THB.

Different immigration offices have different policies. *SOME* may require:

- The ID card of the property owner where you are staying

- Copies of *ALL* stamped pages in your passport

An extension of stay based on being a tourist require the same documents, except the letter from the embassy.

All extension of stays are 1,900 THB. Don't pay any more then that.