Do you know what website people use to read their SD card?
Ahhh people don't generally use a website, I think I [and a lot of others] have an SD card slot on their computer. Perhaps check to see if you have one? <3 Then you just put the SD card in there and get the images off of it! :D
If you don't have one, the alternative is to go to the web browser on your 3DS, go to Gmail.com, sign in, and email yourself the images. You can attach like 20+ at a time, I think. I did this before I had an SD card slot! c:

















