Supported languages

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Highlight and TryHighlight take the identifier of a language or one of its aliases. They are case-insensitive. IsSupported checks an identifier, and GetSupportedLanguages returns every identifier and alias, in ordinal order:

// Identifiers and aliases are case-insensitive
Assert.True(SyntaxHighlighter.IsSupported("C#"));
Assert.True(SyntaxHighlighter.IsSupported("cs"));
Assert.False(SyntaxHighlighter.IsSupported("not-a-language"));

var languages = SyntaxHighlighter.GetSupportedLanguages();
Assert.Contains("csharp", languages);

Languages

Language	Identifier and aliases
Apache configuration	`apache`, `apacheconf`, `htaccess`
Arduino	`arduino`, `ino`
ARM assembly	`armasm`, `arm`
AsciiDoc	`asciidoc`, `adoc`
Awk	`awk`, `gawk`, `mawk`, `nawk`
Bash	`bash`, `sh`, `zsh`, `ksh`
Bicep	`bicep`, `bicepparam`
BNF	`bnf`
C	`c`, `h`
Clojure	`clojure`, `clj`, `edn`
Clojure REPL	`clojure-repl`
CMake	`cmake`, `cmake.in`
CoffeeScript	`coffeescript`, `coffee`, `cson`, `iced`
C++	`cpp`, `c++`, `cc`, `h++`, `hpp`, `hh`, `hxx`, `cxx`
Crystal	`crystal`, `cr`
C#	`csharp`, `cs`, `c#`
CSS	`css`
D	`d`
Dart	`dart`
Delphi	`delphi`, `dpr`, `dfm`, `pas`, `pascal`
Diff	`diff`, `patch`
Django	`django`, `jinja`, `jinja2`, `j2`
DNS zone file	`dns`, `bind`, `zone`
Dockerfile	`dockerfile`, `docker`
Batch file	`dos`, `bat`, `cmd`
Elixir	`elixir`, `ex`, `exs`
Elm	`elm`
ERB	`erb`
Erlang	`erlang`, `erl`
Erlang REPL	`erlang-repl`
Fortran	`fortran`, `f90`, `f95`, `f03`, `f08`, `f77`, `for`, `f`
F#	`fsharp`, `fs`, `f#`
Gherkin	`gherkin`, `feature`
GLSL	`glsl`, `vert`, `frag`
Go	`go`, `golang`
GraphQL	`graphql`, `gql`
Groovy	`groovy`, `gradle`
Haml	`haml`
Handlebars	`handlebars`, `hbs`, `html.hbs`, `html.handlebars`, `htmlbars`, `mustache`
Haskell	`haskell`, `hs`
HCL	`hcl`, `terraform`, `tf`, `tfvars`
HTML	`html`, `htm`, `xhtml`
HTTP	`http`, `https`
INI	`ini`, `gitconfig`
Java	`java`, `jsp`
JavaScript	`javascript`, `js`, `jsx`, `mjs`, `cjs`
JSON	`json`, `jsonc`
Julia	`julia`, `jl`
Julia REPL	`julia-repl`, `jldoctest`
Kotlin	`kotlin`, `kt`, `kts`
KQL	`kql`, `kusto`
LaTeX	`latex`, `tex`
Less	`less`
Lisp	`lisp`, `elisp`, `emacs-lisp`, `common-lisp`
LLVM IR	`llvm`, `ll`
Lua	`lua`, `pluto`
Makefile	`makefile`, `mk`, `mak`, `make`
Markdown	`markdown`, `md`, `mkdown`, `mkd`
MATLAB	`matlab`
Mermaid	`mermaid`, `mmd`
MSIL	`msil`, `il`, `cil`
Nginx	`nginx`, `nginxconf`
Nim	`nim`, `nims`
Nix	`nix`, `nixos`
Node.js REPL	`node-repl`
Objective-C	`objectivec`, `mm`, `objc`, `obj-c`, `obj-c++`, `objective-c++`
OCaml	`ocaml`, `ml`
Perl	`perl`, `pl`, `pm`
PostgreSQL	`pgsql`, `postgres`, `postgresql`
PHP	`php`
Plain text	`plaintext`, `text`, `txt`
PowerShell	`powershell`, `pwsh`, `ps`, `ps1`
Prolog	`prolog`
Properties	`properties`
Protocol Buffers	`protobuf`, `proto`
Puppet	`puppet`, `pp`
Python	`python`, `py`, `gyp`, `ipython`
Python REPL	`python-repl`, `pycon`
R	`r`
Razor	`razor`, `cshtml`, `cshtml-razor`
Ruby	`ruby`, `rb`, `gemspec`, `podspec`, `thor`, `irb`
Rust	`rust`, `rs`
Scala	`scala`
Scheme	`scheme`, `scm`
SCSS	`scss`
Shell session	`shell`, `console`, `shellsession`
Solidity	`solidity`, `sol`
SQL	`sql`
Svelte	`svelte`
Swift	`swift`
Tcl	`tcl`, `tk`
Thrift	`thrift`
TOML	`toml`
Twig	`twig`, `craftcms`
TypeScript	`typescript`, `ts`, `tsx`, `mts`, `cts`
URL-encoded form	`urlencoded`, `x-www-form-urlencoded`
VB.NET	`vbnet`, `vb`
VBScript	`vbscript`, `vbs`
VBScript in HTML	`vbscript-html`
Verilog	`verilog`, `v`, `sv`, `svh`
VHDL	`vhdl`, `vhd`
Vim script	`vim`, `vimscript`
Vue	`vue`
WebAssembly text	`wasm`, `wat`, `wast`
x86 assembly	`x86asm`
XML	`xml`, `xsd`, `xsl`, `plist`, `rss`, `atom`, `svg`
YAML	`yaml`, `yml`
Zig	`zig`, `zon`

ml is OCaml, and gradle is Groovy.

Language identifiers from Markdown

The identifiers are the names commonly written after the opening fence of a Markdown code block, such as csharp or ts, so you can pass that name as is. It comes from the author of the document: use TryHighlight and render the code as plain text when the language is not supported. See Untrusted input.