Zero-width joiner
zero-width joiner (U+200D), commonly abbreviated “ZWJ”: non-printing format control used for the conjoined composition of character sequences needed in some complex scripts and emojis
The zero-width joiner (ZWJ, ; rendered: ; HTML entity: ‍ or ‍) is a non-printing character used in the computerized typesetting of writing systems in which the shape or positioning of a grapheme depends on its relation to other graphemes (complex scripts), such as the Arabic script or any Indic script. Sometimes the Roman script is to be counted as complex, e.g. when using a Fraktur typeface. When placed between two characters that would otherwise not be connected, a ZWJ causes them to be printed in their connected forms.
The exact behaviour of the ZWJ varies depending on whether the use of a conjunct consonant or ligature (where multiple characters are shown with a single glyph) is expected by default; for instance, it suppresses the use of conjuncts in Devanagari (whilst still allowing the use of the individual joining form of a dead consonant, as opposed to a halant form as would be required by the zero-width non-joiner), but induces the use of conjuncts in Sinhala (which does not use them by default). Similarly to Sinhala, when a ZWJ is placed between two emoji characters (or interspersed between multiple), it can result in a single glyph being shown, such as the family emoji, made up of two adult emoji and one or two child emoji.
In some cases, such as the second Devanagari example below, the ZWJ can be used to display a joining form in isolation, when included after the character and combining halant code.
The character's code point is U+200D ZERO WIDTH JOINER (‍). In the InScript keyboard layout for Indian languages, it is typed by the key combination Ctrl+⇧ Shift+1. However, many layouts use the position of QWERTY's ']' key for this character.
This brief starts where responsible research should: with the source description of “Zero-width joiner” as zero-width joiner (U+200D), commonly abbreviated “ZWJ”: non-printing format control used for the conjoined composition of character sequences needed in some complex scripts and emojis. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as zero-width joiner (U+200D), commonly abbreviated “ZWJ”: non-printing format control used for the conjoined composition of character sequences needed in some complex scripts and emojis. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 11, 2026. The linked authority identifier is Q614232.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Zero-width joiner”, its source revision and the description used here.
- Expand the search: follow Zero-width joiner primary sources, Zero-width joiner archive and Zero-width research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Zero-width joiner”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Zero-width joiner” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.