Flip Your Text Upside-Down

You’ve probably seen this somewhere: ʇxǝʇ uʍop-ǝpısdn – upside-down text, rendered using carefully-chosen Unicode characters.

There are a number of web sites that will flip your text, but I wanted to point out the original: David Faden’s Flip. David got the idea from Philip Newton’s post, ¿ʇı̣ əsnqɐ ʇ,uɐɔ noʎ ɟı̣ əpoɔı̣un sı̣ pooɓ ʇɐɥʍ. Philip in turn credits the idea to Mark Shoulson and his post to the qalam group.

FileFormat.info has extended the mapping to include upper-case letters and some numbers: Unicode Upside-Down Mapping, which Marcel Grünauer included in Perl’s Text::UpsideDown.