2025.11.23 04:53
[announcement] misleading PDF
Imagine that I have a font in which the letter "D" has the shape of the letter "L", and the letter "L" has the shape of the letter "D". If I create a PDF with the word "DUCK" using this font, it will look like "LUCK". A person reading the PDF will see the word "LUCK", but when they copy this text and paste it somewhere, or use some tool that converts this PDF to text without using OCR, they will get the word DUCK. This is interesting - thanks to this you can have a document that looks good to the eye, but contains subtle falsehoods in its content. See it in practice: https://czterycztery.pl/inne/zmylkowy_pdf/
comments:
2025.11.23 11:05 J
Ale chyba pomieszałeś wersje w opisie.
2025.11.23 14:06 P.
A że gdzie, w którym fragmencie?
2025.11.23 19:01 J
Zamienione są wersje "summer" i "winter", nie?
"Kiedy oglądam" powinno mieć "winter", a "kiedy skopiuję" powinno mieć "summer".
2025.11.24 03:55 P.
Ano. Poprawiłem. Dziękuję.
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