What is a Zero Width Space?
A Zero Width Space (ZWSP, U+200B) is a Unicode character with no visual representation and no width. It is used to indicate word boundaries in languages that don't use spaces, or to allow long words to be broken across lines.
When is ZWSP a Problem?
ZWSP characters can be accidentally pasted into code editors, search boxes, or social media posts, causing unexpected behaviours like text not matching in searches, form validation failures, or hidden tracking in copied content.