Some paper facts:

• SS14 Paper supports upto 6 000 symbols per paper. (Including tags) (RMC14 supports 10 000 symbols)
• SS14 Paper can show upto 47 symbols per line. (Does not include tags)
• You actually don't need to close tags for them to work.
• Transparent pixels can be achieved either via [mono], or via [color=#0000].
• You can actually resize paper upto 60 symbols per line! (100% scaling)
• UI Scaling breaks paper rendering a little.

How to use:

1. Get an image (screenshot, extract, create)
2. Crop it (23px horizontal is a recommended maximum)
3. Paste it there (Or open).
4. You can change colors via LMB and copy colors via RMB. (Color picker doesnt support transparent colors, blame W3 Consortium)

Best viewed in Mozilla Firefox or it's derivatives, be free, use the fox!