What are invisible Unicode characters in prompts?

Invisible characters like zero-width spaces (U+200B), zero-width non-joiners (U+200C), zero-width joiners (U+200D), and byte order marks (U+FEFF) are often copied from web pages or documents. They can confuse AI models and should be removed.

Why should I normalize smart quotes in prompts?

Smart quotes (“”‘’) are typographic characters that may not parse correctly in code, JSON, or certain model inputs. Converting them to straight quotes ("') ensures consistent handling.

Does this tool change the meaning of my prompt?

No. The formatter only removes invisible characters, collapses redundant whitespace, and normalizes quotes. The semantic content of your prompt is preserved.

AI Prompt Formatter

Clean and format AI prompts by removing invisible characters and normalizing whitespace.

Input0 chars

Cleaned Output

0 chars

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FAQ

What are invisible Unicode characters in prompts?: Invisible characters like zero-width spaces (U+200B), zero-width non-joiners (U+200C), zero-width joiners (U+200D), and byte order marks (U+FEFF) are often copied from web pages or documents. They can confuse AI models and should be removed.
Why should I normalize smart quotes in prompts?: Smart quotes (“”‘’) are typographic characters that may not parse correctly in code, JSON, or certain model inputs. Converting them to straight quotes ("') ensures consistent handling.
Does this tool change the meaning of my prompt?: No. The formatter only removes invisible characters, collapses redundant whitespace, and normalizes quotes. The semantic content of your prompt is preserved.

Clean up AI prompts copied from documents, PDFs, or web pages. Removes invisible Unicode characters (zero-width spaces, BOM), normalizes smart quotes to straight quotes, collapses extra whitespace, and trims trailing spaces per line. Shows stats on how much was cleaned.