JPEG image compression is lossy. Every time you edit and save a picture, some of the original content is lost. But it’s difficult to see that with the naked eye, so I compressed Shakespeare instead.
“O Romep+ Rpldo wiepffnre arr!riov Romep@
Dgoy thz gatggr `me tefusf sgx n`me!”
That’s the balcony scene from Romeo and Juliet, compressed at “maximum” quality in Photoshop: I loaded the text as a RAW, then outputted the compressed file back to plain text.