Elenco dei caratteri Unicode invisibili

Questo è l'elenco di riferimento dei caratteri invisibili e ambigui che lo strumento rileva: spazi a larghezza zero, controlli bidirezionali, caratteri tag, spazi insoliti, separatori di riga e caratteri di controllo. Ogni riga indica il punto di codice, la categoria, il rischio e cosa ne fa il pulitore.

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Normalizza spazi insoliti Raddrizza virgolette curve Trattini lunghi (em dash) in trattini

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Il tuo testo con ogni carattere nascosto esposto come etichetta. Passa il mouse per il nome Unicode.

Incolla qualsiasi testo nello strumento sopra per vedere quali di questi caratteri contiene e cosa ne fa il pulitore. La tabella seguente è generata dallo stesso file di dati usato dallo strumento, quindi corrisponde sempre al suo comportamento. I nomi Unicode sono standard e mostrati in inglese.

57 individually named code points plus 7 ranges. This table is generated from the same data file the checker itself uses, so it always matches what the tool does.

Code point	Name	Category	Risk	What the cleaner does	Why it matters and where it comes from
U+200B	ZERO WIDTH SPACE	Zero-width / invisible	Medium	Removed	Occupies no width but is a real character: it breaks string equality, splits words for search and regex, and survives copy-paste invisibly. Word-wrap hints inserted by CMS editors, PDF exporters and web typography scripts.
U+200C	ZERO WIDTH NON-JOINER	Zero-width / invisible	Medium	Kept or removed depending on context	Prevents two letters from forming a ligature. Meaningless in Latin text, but grammatically required in Persian, Urdu and several Indic scripts. Persian and Indic typing; also injected by some editors around emphasis markup.
U+200D	ZERO WIDTH JOINER	Joiner	Medium	Kept or removed depending on context	Glues code points into one glyph. It is what holds family and profession emoji together, and it is also required in Devanagari and Arabic-script typing. Emoji sequences, Indic and Arabic script text, occasionally editor artefacts.
U+2060	WORD JOINER	Zero-width / invisible	Medium	Removed	A zero-width no-break point. Invisible, but it blocks line breaking and breaks word-boundary matching. Typographic tooling; the modern replacement for a leading U+FEFF.
U+2061	FUNCTION APPLICATION	Zero-width / invisible	Medium	Removed	Invisible mathematical operator. Carries meaning only inside MathML; in prose it is silent noise. Copy-paste out of MathML, LaTeX-to-HTML converters and equation editors.
U+2062	INVISIBLE TIMES	Zero-width / invisible	Medium	Removed	Invisible multiplication sign. Same story: meaningful in MathML, invisible corruption in plain text. Equation editors and scientific PDFs.
U+2063	INVISIBLE SEPARATOR	Zero-width / invisible	Medium	Removed	Invisible comma used between mathematical indices. Splits tokens for anything that parses the text. Equation editors and scientific PDFs.
U+2064	INVISIBLE PLUS	Zero-width / invisible	Medium	Removed	Invisible addition sign used in mixed numbers. Silent in prose, disruptive in parsers. Equation editors and scientific PDFs.
U+FEFF	ZERO WIDTH NO-BREAK SPACE (BOM)	Zero-width / invisible	Medium	Removed	The byte order mark. At the start of a file it is metadata; anywhere else it is an invisible character that corrupts JSON parsing, CSV headers and shell scripts. Files saved as "UTF-8 with BOM" by Windows editors and Excel exports.
U+180E	MONGOLIAN VOWEL SEPARATOR	Zero-width / invisible	Medium	Kept or removed depending on context	Reclassified as a zero-width format character in Unicode 6.3. Legitimate inside Mongolian text, invisible padding anywhere else. Mongolian typing; otherwise deliberate padding, because it long passed as a "space" in username filters.
U+034F	COMBINING GRAPHEME JOINER	Zero-width / invisible	Medium	Removed	Affects collation and combining-mark ordering without rendering anything. In ordinary text it only defeats string comparison. Linguistic and library data; occasionally used to defeat naive deduplication.
U+115F	HANGUL CHOSEONG FILLER	Zero-width / invisible	Medium	Kept or removed depending on context	A placeholder for a missing Korean initial consonant. Renders as blank space and is widely used to fake empty nicknames. Korean text composition; also a classic "invisible username" trick.
U+1160	HANGUL JUNGSEONG FILLER	Zero-width / invisible	Medium	Kept or removed depending on context	A placeholder for a missing Korean vowel. Blank on screen, real in the byte stream. Korean text composition; also used for blank display names.
U+3164	HANGUL FILLER	Zero-width / invisible	Medium	Kept or removed depending on context	Renders as an empty box-width blank. The single most common character behind "invisible" chat messages and profile names. Korean input methods; deliberate use in games, chat apps and forums.
U+FFA0	HALFWIDTH HANGUL FILLER	Zero-width / invisible	Medium	Kept or removed depending on context	The halfwidth form of U+3164, with the same blank rendering and the same abuse pattern. Korean input methods and invisible-name tricks.
U+17B4	KHMER VOWEL INHERENT AQ	Zero-width / invisible	Medium	Kept or removed depending on context	Normally invisible. It is a genuine part of Khmer orthography, so deleting it blindly damages Khmer text. Khmer typing; outside Khmer text it is padding.
U+17B5	KHMER VOWEL INHERENT AA	Zero-width / invisible	Medium	Kept or removed depending on context	Same as U+17B4: invisible, legitimate in Khmer, junk elsewhere. Khmer typing; outside Khmer text it is padding.
U+2800	BRAILLE PATTERN BLANK	Zero-width / invisible	Medium	Kept or removed depending on context	A braille cell with no raised dots. It is a real, meaningful character in braille content, and a wide invisible blank everywhere else. Braille text and ASCII-art; also used to pad messages past length filters.
U+00AD	SOFT HYPHEN	Zero-width / invisible	Medium	Removed	Shows a hyphen only if the word wraps. Invisible in the middle of a word, yet it defeats exact search, spellcheck and equality checks. Word processors, hyphenation tools and PDF-to-text conversion.
U+206A	INHIBIT SYMMETRIC SWAPPING	Zero-width / invisible	Medium	Removed	Deprecated Unicode format control. No modern renderer needs it; its presence is a sign of legacy conversion or deliberate padding. Legacy document conversion.
U+206B	ACTIVATE SYMMETRIC SWAPPING	Zero-width / invisible	Medium	Removed	Deprecated Unicode format control with no rendering effect in current software. Legacy document conversion.
U+206C	INHIBIT ARABIC FORM SHAPING	Zero-width / invisible	Medium	Removed	Deprecated Unicode format control, superseded by ZWJ and ZWNJ. Legacy Arabic document conversion.
U+206D	ACTIVATE ARABIC FORM SHAPING	Zero-width / invisible	Medium	Removed	Deprecated Unicode format control, superseded by ZWJ and ZWNJ. Legacy Arabic document conversion.
U+206E	NATIONAL DIGIT SHAPES	Zero-width / invisible	Medium	Removed	Deprecated control that switched digit rendering. Invisible, and ignored by modern text stacks. Legacy document conversion.
U+206F	NOMINAL DIGIT SHAPES	Zero-width / invisible	Medium	Removed	Deprecated counterpart to U+206E. Invisible and inert. Legacy document conversion.
U+061C	ARABIC LETTER MARK	Bidirectional control	High	Removed	An invisible character with strong right-to-left directionality. It changes how neighbouring text is ordered on screen without changing the stored string. Arabic and Persian layout fixes; also used to disguise reordering.
U+200E	LEFT-TO-RIGHT MARK	Bidirectional control	High	Removed	Forces left-to-right ordering for the text around it. Invisible, and it makes what you read differ from what is stored. Mixed-direction documents, spreadsheets and localisation files.
U+200F	RIGHT-TO-LEFT MARK	Bidirectional control	High	Removed	The mirror of U+200E. It can silently reverse the apparent order of adjacent characters. Mixed-direction documents; also the classic filename-spoofing character.
U+202A	LEFT-TO-RIGHT EMBEDDING	Bidirectional control	High	Removed	Opens a directional embedding that persists until it is popped. Unbalanced embeddings scramble the display of everything that follows. Legacy bidi markup; deprecated in favour of isolates.
U+202B	RIGHT-TO-LEFT EMBEDDING	Bidirectional control	High	Removed	Opens a right-to-left embedding. Same unbalanced-state risk as U+202A. Legacy bidi markup; deprecated in favour of isolates.
U+202C	POP DIRECTIONAL FORMATTING	Bidirectional control	High	Removed	Closes the most recent embedding or override. Harmless alone, but it is half of every bidi attack sequence. Legacy bidi markup.
U+202D	LEFT-TO-RIGHT OVERRIDE	Bidirectional control	High	Removed	Forces every following character to render left-to-right regardless of its own direction. One of the two characters that can make code display differently from how it runs. Almost never legitimate in modern text. Treat with suspicion in source code.
U+202E	RIGHT-TO-LEFT OVERRIDE	Bidirectional control	High	Removed	Reverses the rendered order of everything after it. This is the character behind reversed-extension filename tricks and misleading code display. Almost never legitimate. Its presence in code or a filename is a red flag.
U+2066	LEFT-TO-RIGHT ISOLATE	Bidirectional control	High	Removed	Opens an isolated left-to-right run. The modern, safer bidi mechanism, but still invisible state that must be popped. Correct bidi markup in localisation files; also seen in code-display research demos.
U+2067	RIGHT-TO-LEFT ISOLATE	Bidirectional control	High	Removed	Opens an isolated right-to-left run, invisibly changing display order for the text it wraps. Localisation files; also seen in code-display research demos.
U+2068	FIRST STRONG ISOLATE	Bidirectional control	High	Removed	Opens an isolate whose direction is inferred from its first strong character, so its effect depends on the data inside it. Localisation frameworks handling user-supplied names.
U+2069	POP DIRECTIONAL ISOLATE	Bidirectional control	High	Removed	Closes an isolate. Like U+202C, it is the closing half of a sequence that can rewrite what a reader sees. Localisation frameworks.
U+00A0	NO-BREAK SPACE	Unusual space	Medium	Replaced with a normal space	Looks exactly like a normal space but is a different character, so exact matches, CSV columns and code indentation quietly fail. Word processors, web pages using  , and PDF text extraction. The most common hidden character of all.
U+1680	OGHAM SPACE MARK	Unusual space	Medium	Replaced with a normal space	A space character from the Ogham block that may render as a visible line in some fonts. Deliberate substitution; effectively never typed by accident.
U+2000	EN QUAD	Unusual space	Medium	Replaced with a normal space	A fixed-width typographic space. Indistinguishable from a normal space in most UI fonts. Typesetting software and PDF extraction.
U+2001	EM QUAD	Unusual space	Medium	Replaced with a normal space	A fixed-width typographic space one em wide. Typesetting software and PDF extraction.
U+2002	EN SPACE	Unusual space	Medium	Replaced with a normal space	Half-em typographic space that passes for an ordinary space on screen. Typesetting software, InDesign and PDF extraction.
U+2003	EM SPACE	Unusual space	Medium	Replaced with a normal space	Full-em typographic space, frequently mistaken for a tab or double space. Typesetting software and PDF extraction.
U+2004	THREE-PER-EM SPACE	Unusual space	Medium	Replaced with a normal space	Fixed-width space used in fine typesetting; breaks whitespace-sensitive parsing. Typesetting software and PDF extraction.
U+2005	FOUR-PER-EM SPACE	Unusual space	Medium	Replaced with a normal space	Fixed-width space used in fine typesetting. Typesetting software and PDF extraction.
U+2006	SIX-PER-EM SPACE	Unusual space	Medium	Replaced with a normal space	Very narrow fixed-width space, visually identical to a thin gap. Typesetting software and PDF extraction.
U+2007	FIGURE SPACE	Unusual space	Medium	Replaced with a normal space	A non-breaking space as wide as a digit, used to align numbers in tables. It reliably breaks numeric parsing. Financial documents, spreadsheets and generated reports.
U+2008	PUNCTUATION SPACE	Unusual space	Medium	Replaced with a normal space	A space as wide as a period, used for alignment. Typesetting software.
U+2009	THIN SPACE	Unusual space	Medium	Replaced with a normal space	Narrow space used around dashes and units. Very common in text copied from well-typeset web pages. Web typography, Wikipedia, scientific writing.
U+200A	HAIR SPACE	Unusual space	Medium	Replaced with a normal space	The narrowest space in Unicode. Often invisible in practice, yet it still splits words for search. Web typography and typesetting software.
U+202F	NARROW NO-BREAK SPACE	Unusual space	Medium	Replaced with a normal space	Non-breaking and narrow. French typography and many number formats use it, so it arrives with copied prices and dates. French locale formatting, spreadsheets and currency output.
U+205F	MEDIUM MATHEMATICAL SPACE	Unusual space	Medium	Replaced with a normal space	Spacing used around mathematical operators. Invisible as anything but a space. MathML and equation editors.
U+3000	IDEOGRAPHIC SPACE	Unusual space	Medium	Replaced with a normal space	The full-width space used in Chinese, Japanese and Korean typing. Legitimate in CJK text, and a silent mismatch in code and identifiers. CJK input methods, where it is the space produced in full-width mode.
U+2028	LINE SEPARATOR	Line separator	Medium	Converted to a line break	A line break that is not a newline. It terminates lines in text engines but historically broke JSON and JavaScript string literals. Word processors, especially shift-enter line breaks exported to plain text.
U+2029	PARAGRAPH SEPARATOR	Line separator	Medium	Converted to a line break	A paragraph break that most tools do not recognise as a newline, so paragraphs collapse into one line. Word processors and rich-text exports.
U+0085	NEXT LINE (NEL)	Line separator	Medium	Converted to a line break	A legacy one-character line break combining CR and LF. Most parsers do not treat it as a newline, so lines silently merge. Mainframe (EBCDIC) exports and Windows-1252 data mis-decoded as UTF-8, where 0x85 is an ellipsis.
U+000D	CARRIAGE RETURN (WITHOUT LINE FEED)	Line separator	Medium	Converted to a line break	A lone CR with no LF after it. Old-Mac line endings and injection tricks use it; many tools show one line while parsers see two, or vice versa. Classic Mac OS files, HTTP header injection payloads and broken concatenation of mixed line endings.
U+0000–U+0008	C0 CONTROL CHARACTERS (NUL to BACKSPACE)	Control character	High	Removed	Teletype-era control codes. A NUL byte truncates strings in C-based software, and the rest have no meaning in text. Binary data pasted as text, corrupted exports and malformed database dumps.
U+000B–U+000C	LINE TABULATION, FORM FEED	Control character	High	Removed	Legacy page and vertical-tab controls. Rendered inconsistently and treated as whitespace by some parsers and not others. Printer output, mainframe exports and old text files.
U+000E–U+001F	C0 CONTROL CHARACTERS (SHIFT OUT to UNIT SEPARATOR)	Control character	High	Removed	Device and record-separator controls. Invisible in most editors, and they corrupt CSV, TSV and log parsing. Legacy data interchange formats and terminal captures.
U+007F–U+009F	DELETE and C1 CONTROL CHARACTERS	Control character	High	Removed	DEL plus the C1 block. Common in text mis-decoded from Windows-1252, where they masquerade as punctuation. Encoding mismatches, especially Windows-1252 data read as UTF-8.
U+E0000–U+E007F	TAG CHARACTERS	Tag character	High	Kept or removed depending on context	An invisible mirror of ASCII. A full sentence can be encoded in tag characters and rendered as nothing at all, which makes this block the standard vehicle for prompt-injection smuggling. The one legitimate use is regional flag emoji. Deprecated language tagging, emoji flag sequences, and deliberate hidden payloads.
U+FE00–U+FE0F	VARIATION SELECTORS VS1 to VS16	Variation selector	Medium	Kept or removed depending on context	Selects a glyph variant of the preceding character. VS16 (U+FE0F) is what turns a monochrome symbol into a colour emoji, so removing it blindly destroys emoji. Emoji presentation, keycap sequences, and CJK glyph variants.
U+E0100–U+E01EF	VARIATION SELECTORS SUPPLEMENT VS17 to VS256	Variation selector	Medium	Kept or removed depending on context	Ideographic variation selectors that pick a specific glyph for a CJK character. Legitimate after an ideograph, and pure payload space after anything else. Japanese personal and place names; also used to hide data after non-CJK characters.

Elenco dei caratteri Unicode invisibili

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