Or you can simply do it using this follow-up prompt. No external tools are needed. Worked for me: Remove all non-visible whitespace characters such as 0x20

Or you can simply do it using this follow-up prompt. No external tools are needed. Worked for me: Remove all non-visible whitespace characters such as 0x202F from the text. Alternatively, if you have access to the original prompt, just append this: Your response should not contain any non-visible whitespace characters such as 0x202F or 0x0A (newlines are allowed).