How can I upload documents for a Non-O visa application in Thailand if I'm not tech-savvy?

Not being smart, do you have a niece or nephew or a friends son or daughter to help you, they would probably have it all done in 5 minutes

I applied through London last year and files had to be JPEG it wouldn’t accept PDF files

What I did was scan and load documents onto Home Screen into individual files then drag and drop them as required and I found that easier because I have limited computer knowledge

Your scanner can load files in different formats eg PDF or JPEG

Maybe if you have a computer literate friend they might help you.

In the past when I was learning I went to my public library, they helped a lot.

When i did my one recently, it would not accept pdf of some of my documents so I converted them to jpg and no worries.

Get it from Thai immergration site

make sure it is in pdf or jpg . file sizes not over 3 Mb.

Try reducing the size of your documents.

Check file size also use something like ilovepdf to merge docs into 1 etc

pay an agent to do it, stop wasting time

I just took pictures of them, in my case was marriage visa, approved first try, never asked for further documentd or anything, you don't necessarily need to scan, can take pictures with your phone then upload those

Or you could ask chatgpt and they will walk you through every step.

Your scanned documents will be saved in a file. Open "documents". Then go into the Visa application, login and up in the right hand corner of your screen you can choose to split screen. You'll have your documents and your Visa application visible. Then drag your documents to where you need them.

Or alternatively save your documents in photos, have your Visa application open and click where it says upload and all your photos will appear. Click on the ones you need and they will open and click save. They should automatically upload.