\vphantom - LaTeX spacing command

\vphantom{x}

Renderer support

Package	MathJax	KaTeX	XeTeX
`base`	MathJax: Full	KaTeX: Full	XeTeX: Full
`textmacros`	MathJax: Full	KaTeX: Full	XeTeX: Full

Syntax#

\vphantomm{a}math content

Argspec m — one mandatory argument. In base. Reading argspecs

\vphantomm:T{a}text content

Argspec m:T — one mandatory argument. In textmacros. Reading argspecs

base

\vphantom{\sum}

textmacros

\text{\vphantom{abc}}

Package	Signature	Allowed mode	Notes
`base`	`m`	math	Used to reserve vertical space in a mathematical formula corresponding to the argument, while taking up zero horizontal space.
`textmacros`	`m:T`	text	Used to match vertical height for delimiters or math structures across different lines or cells without adding horizontal space.

TeXForm parses this entry as prefix syntax; the package determines its argument specification.

`base`
Input	Case	MathJax	KaTeX	XeTeX
`\vphantom{a}`	Positive · baseline	Pass	Pass	Pass
`\vphantom a`	Positive · bare[0]	Pass	Pass	Pass

`textmacros`
Input	Case	MathJax	KaTeX	XeTeX
`\vphantom{a}`	Positive · baseline	Pass	Pass	Pass
`\vphantom a`	Positive · bare[0]	Pass	Pass	Pass
`\vphantom{a^2}`	Negative · neg:T[0]	Fail	Fail	Fail