If anyone wants to add an image on the undertale memories website:
Step 1: Create a new .txt file
Step 2: Copy and paste the code from https://pastebin.com/mvhNm7d0 into the file
Step 3: Change the file extension to .html
Step 4: Run it
Step 5: Attach an image and copy the output text
Step 6: Copy and paste it into the giant array of zeros and ones in the inspect element menu, as shown in the screenshot
Step 7: Hit enter