Things that KaTeX does not (yet) support

The list of supported/not supported functions is available at the documentation.

This is a list of functions, features, and extensions that KaTeX does not currently support. It is not comprehensive. Sources include KaTeX’s GitHub Issues pages and the list at http://utensil-site.github.io/available-in-katex/.

Things merged into KaTeX master but not yet released.

\oiint \oiiint

\brace \brack

\genfrac \above

Array nuances

\cline, \multicolumn, \hfill, \vline (#269)

Characters for direct input

⋗ ⋖ ¡

Environments

equation

picture

split

CD

Fonts

Blackboard bold for small letters and digits (#473)

\cal

\oldstyle

\pmb

\textsc, i.e., small caps (#471)

Upright lower-case Greek (#564)

Functions from LaTeX packages

astrosymbols (#373)

\atopwithdelims, \overwithdelims

\bigominus, \bigoslash, \bigsqcap (#1222)

\buildrel

\cancelto

\dddot

\euro

\iddots (#1223)

\includegraphics (#898)

\leftroot, \uproot

\operatorname* (#1242)

\overbracket, \underbracket

\projlim, \varprojlim, \injlim, \varinjlim, \varliminf, \varlimsup

\sideset

\substack

\wideparen (#560)

\phase

\angl

Measurement, spacing, shifts

\>

\hskip

\moveleft, \moveright

\mspace

\negthickspace, \negthinspace

\raisedistance

\rotatebox (#681)

\scalebox

\setlength (#687)

\shoveleft, \shoveright

\skew

\strut

\vcenter

Functions from KaTeX Extensions that don’t yet exist

\ce (#50)

\class, \cssId (#90)

Modes

Extension architecture (#762)

Right-to-left (#343)

\newcommand (#250) (KaTeX macros can be defined via \gdef or in the rendering options)

\DeclareMathOperator

\definecolor (#750)

\newenvironment (#37)

\renewenvironment

\require

Automatic left/right delimiters, as in nath package (#806)

Equation numbering (#350) (KaTeX supports \tag)

Canvas output

SVG output (#375)

Intermediate representation (HAST?)

Macros

\if, \fi, \ifx, \else, \ifmmode

MathJax non-standard functions

\array	KaTeX supports \begin{array}
\cases	KaTeX supports \begin{cases}
\class, \cssId
\enclose
\mathtip
\Newextarrow
\Rule	KaTeX supports \rule
\Space	KaTeX supports \space
\texttip
\Tiny	KaTeX supports \tiny
\unicode