HumanType detects and replaces the typographic symbols that AI language models habitually produce – em dashes, curly quotes, ellipses, non-breaking spaces, and more – substituting plain ASCII equivalents that read as naturally human-written text. Paste your AI-generated content, choose which replacement rules to apply, and click Replace to make it invisible to AI detection tools.

Why these replacements matter

Dashes

AI models love the em dash (—). Humans rarely type it, defaulting to a simple hyphen (-) or a double hyphen (--). Em dashes are a strong signal for AI detectors. Replacing them with a regular hyphen or en dash makes the text appear more natural.

Ellipsis

The Unicode ellipsis character (…) is a single glyph that most people never insert manually. Three separate dots (...) is how humans type an ellipsis, and that's exactly what this rule enforces.

Quotes and apostrophe

Curly quotes (“ ” ‘ ’) and guillemets (« ») are hallmarks of word processors and AI text generators. When pasted into a CMS, plain text editor, or code, they can break formatting. Straight quotes (") and apostrophes (') are universally compatible.

Special spaces

Non-breaking spaces (U+00A0), thin spaces (U+2009), and hair spaces (U+200A) are invisible to the naked eye but stand out to AI detectors. Converting them to regular spaces removes hidden fingerprints without affecting readability.

Fractions, legal symbols, arrows

Unicode fractions (½, ¼, ¾), legal symbols (®, ™, ©), and typographic arrows (→, ⇒, ←) are another layer of AI "tells." Replacing them with plain-text equivalents strips away machine-specific formatting and makes your text indistinguishable from human typing.