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StreamField code blocks for the Wagtail CMS with real-time PrismJS Syntax Highlighting.


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Wagtail Code Block

Wagtail Code Block is a syntax highlighter block for source code for the Wagtail CMS. It features real-time highlighting in the Wagtail editor, the front end, line numbering, and support for PrismJS themes.

It uses the PrismJS library both in Wagtail Admin and the website.

Join the Community at Wagtail Space!

We'll be at Wagtail Space US this year! The Call for Participation and Registration for both Wagtail Space 2024 events is open. We would love to have you give a talk, or just us as an attendee in June.

Example Usage

First, add wagtailcodeblock to your INSTALLED_APPS in Django's settings. Here's a bare bones example:

from wagtail.blocks import TextBlock
from wagtail.fields import StreamField
from wagtail.models import Page
from wagtail.admin.panels import FieldPanel

from wagtailcodeblock.blocks import CodeBlock

class HomePage(Page):
    body = StreamField([
        ("heading", TextBlock()),
        ("code", CodeBlock(label='Code')),

    content_panels = Page.content_panels + [

You can also force it to use a single language or set a default language by providing a language code which must be included in your WAGTAIL_CODE_BLOCK_LANGUAGES setting:

bash_code = CodeBlock(label='Bash Code', language='bash')
any_code = CodeBlock(label='Any code', default_language='python')

Screenshot of the CMS Editor Interface

Admin in Action

Installation & Setup

To install Wagtail Code Block run:

# Wagtail 4.0 and greater
pip install wagtailcodeblock

# Wagtail 3.x
pip install wagtailcodeblock==

# Wagtail 2.x
pip install wagtailcodeblock==

And add wagtailcodeblock to your INSTALLED_APPS setting:


Django Settings

Line Numbers

Line numbers are enabled by default, but can be disabled in Django's settings:


Copy to clipboard

Copy to clipboard is enabled by default, but can be disabled in Django's settings:



Wagtail Code Block defaults to the PrismJS "Coy" theme, which looks good with Wagtail's CMS editor design. You can choose a different theme by configuring WAGTAIL_CODE_BLOCK_THEME in your Django settings. PrismJS provides several themes:

For example, in you want to use the Solarized Light theme: WAGTAIL_CODE_BLOCK_THEME = 'solarizedlight' If you want to use the Default theme: WAGTAIL_CODE_BLOCK_THEME = None

Languages Available

You can customize the languages available by configuring WAGTAIL_CODE_BLOCK_LANGUAGES in your Django settings. By default, it will be set with these languages, since most users are in the Python web development community:

    ('bash', 'Bash/Shell'),
    ('css', 'CSS'),
    ('diff', 'diff'),
    ('html', 'HTML'),
    ('javascript', 'Javascript'),
    ('json', 'JSON'),
    ('python', 'Python'),
    ('scss', 'SCSS'),
    ('yaml', 'YAML'),

Each language in this setting is a tuple of the PrismJS code and a descriptive label. If you want use all available languages, here is a list:

    ('abap', 'ABAP'),
    ('abnf', 'Augmented Backus–Naur form'),
    ('actionscript', 'ActionScript'),
    ('ada', 'Ada'),
    ('antlr4', 'ANTLR4'),
    ('apacheconf', 'Apache Configuration'),
    ('apl', 'APL'),
    ('applescript', 'AppleScript'),
    ('aql', 'AQL'),
    ('arduino', 'Arduino'),
    ('arff', 'ARFF'),
    ('asciidoc', 'AsciiDoc'),
    ('asm6502', '6502 Assembly'),
    ('aspnet', 'ASP.NET (C#)'),
    ('autohotkey', 'AutoHotkey'),
    ('autoit', 'AutoIt'),
    ('bash', 'Bash + Shell'),
    ('basic', 'BASIC'),
    ('batch', 'Batch'),
    ('bison', 'Bison'),
    ('bnf', 'Backus–Naur form + Routing Backus–Naur form'),
    ('brainfuck', 'Brainfuck'),
    ('bro', 'Bro'),
    ('c', 'C'),
    ('clike', 'C-like'),
    ('cmake', 'CMake'),
    ('csharp', 'C#'),
    ('cpp', 'C++'),
    ('cil', 'CIL'),
    ('coffeescript', 'CoffeeScript'),
    ('clojure', 'Clojure'),
    ('crystal', 'Crystal'),
    ('csp', 'Content-Security-Policy'),
    ('css', 'CSS'),
    ('css-extras', 'CSS Extras'),
    ('d', 'D'),
    ('dart', 'Dart'),
    ('diff', 'Diff'),
    ('django', 'Django/Jinja2'),
    ('dns-zone-file', 'DNS Zone File'),
    ('docker', 'Docker'),
    ('ebnf', 'Extended Backus–Naur form'),
    ('eiffel', 'Eiffel'),
    ('ejs', 'EJS'),
    ('elixir', 'Elixir'),
    ('elm', 'Elm'),
    ('erb', 'ERB'),
    ('erlang', 'Erlang'),
    ('etlua', 'Embedded LUA Templating'),
    ('fsharp', 'F#'),
    ('flow', 'Flow'),
    ('fortran', 'Fortran'),
    ('ftl', 'Freemarker Template Language'),
    ('gcode', 'G-code'),
    ('gdscript', 'GDScript'),
    ('gedcom', 'GEDCOM'),
    ('gherkin', 'Gherkin'),
    ('git', 'Git'),
    ('glsl', 'GLSL'),
    ('gml', 'GameMaker Language'),
    ('go', 'Go'),
    ('graphql', 'GraphQL'),
    ('groovy', 'Groovy'),
    ('haml', 'Haml'),
    ('handlebars', 'Handlebars'),
    ('haskell', 'Haskell'),
    ('haxe', 'Haxe'),
    ('hcl', 'HCL'),
    ('http', 'HTTP'),
    ('hpkp', 'HTTP Public-Key-Pins'),
    ('hsts', 'HTTP Strict-Transport-Security'),
    ('ichigojam', 'IchigoJam'),
    ('icon', 'Icon'),
    ('inform7', 'Inform 7'),
    ('ini', 'Ini'),
    ('io', 'Io'),
    ('j', 'J'),
    ('java', 'Java'),
    ('javadoc', 'JavaDoc'),
    ('javadoclike', 'JavaDoc-like'),
    ('javascript', 'JavaScript'),
    ('javastacktrace', 'Java stack trace'),
    ('jolie', 'Jolie'),
    ('jq', 'JQ'),
    ('jsdoc', 'JSDoc'),
    ('js-extras', 'JS Extras'),
    ('js-templates', 'JS Templates'),
    ('json', 'JSON'),
    ('jsonp', 'JSONP'),
    ('json5', 'JSON5'),
    ('julia', 'Julia'),
    ('keyman', 'Keyman'),
    ('kotlin', 'Kotlin'),
    ('latex', 'LaTeX'),
    ('less', 'Less'),
    ('lilypond', 'Lilypond'),
    ('liquid', 'Liquid'),
    ('lisp', 'Lisp'),
    ('livescript', 'LiveScript'),
    ('lolcode', 'LOLCODE'),
    ('lua', 'Lua'),
    ('makefile', 'Makefile'),
    ('markdown', 'Markdown'),
    ('markup', 'Markup + HTML + XML + SVG + MathML'),
    ('markup-templating', 'Markup templating'),
    ('matlab', 'MATLAB'),
    ('mel', 'MEL'),
    ('mizar', 'Mizar'),
    ('monkey', 'Monkey'),
    ('n1ql', 'N1QL'),
    ('n4js', 'N4JS'),
    ('nand2tetris-hdl', 'Nand To Tetris HDL'),
    ('nasm', 'NASM'),
    ('nginx', 'nginx'),
    ('nim', 'Nim'),
    ('nix', 'Nix'),
    ('nsis', 'NSIS'),
    ('objectivec', 'Objective-C'),
    ('ocaml', 'OCaml'),
    ('opencl', 'OpenCL'),
    ('oz', 'Oz'),
    ('parigp', 'PARI/GP'),
    ('parser', 'Parser'),
    ('pascal', 'Pascal + Object Pascal'),
    ('pascaligo', 'Pascaligo'),
    ('pcaxis', 'PC Axis'),
    ('perl', 'Perl'),
    ('php', 'PHP'),
    ('phpdoc', 'PHPDoc'),
    ('php-extras', 'PHP Extras'),
    ('plsql', 'PL/SQL'),
    ('powershell', 'PowerShell'),
    ('processing', 'Processing'),
    ('prolog', 'Prolog'),
    ('properties', '.properties'),
    ('protobuf', 'Protocol Buffers'),
    ('pug', 'Pug'),
    ('puppet', 'Puppet'),
    ('pure', 'Pure'),
    ('python', 'Python'),
    ('q', 'Q (kdb+ database)'),
    ('qore', 'Qore'),
    ('r', 'R'),
    ('jsx', 'React JSX'),
    ('tsx', 'React TSX'),
    ('renpy', 'Ren\'py'),
    ('reason', 'Reason'),
    ('regex', 'Regex'),
    ('rest', 'reST (reStructuredText)'),
    ('rip', 'Rip'),
    ('roboconf', 'Roboconf'),
    ('robot-framework', 'Robot Framework'),
    ('ruby', 'Ruby'),
    ('rust', 'Rust'),
    ('sas', 'SAS'),
    ('sass', 'Sass (Sass)'),
    ('scss', 'Sass (Scss)'),
    ('scala', 'Scala'),
    ('scheme', 'Scheme'),
    ('shell-session', 'Shell Session'),
    ('smalltalk', 'Smalltalk'),
    ('smarty', 'Smarty'),
    ('solidity', 'Solidity (Ethereum)'),
    ('sparql', 'SPARQL'),
    ('splunk-spl', 'Splunk SPL'),
    ('sqf', 'SQF: Status Quo Function (Arma 3)'),
    ('sql', 'SQL'),
    ('soy', 'Soy (Closure Template)'),
    ('stylus', 'Stylus'),
    ('swift', 'Swift'),
    ('tap', 'TAP'),
    ('tcl', 'Tcl'),
    ('textile', 'Textile'),
    ('toml', 'TOML'),
    ('tt2', 'Template Toolkit 2'),
    ('twig', 'Twig'),
    ('typescript', 'TypeScript'),
    ('t4-cs', 'T4 Text Templates (C#)'),
    ('t4-vb', 'T4 Text Templates (VB)'),
    ('t4-templating', 'T4 templating'),
    ('vala', 'Vala'),
    ('vbnet', 'VB.Net'),
    ('velocity', 'Velocity'),
    ('verilog', 'Verilog'),
    ('vhdl', 'VHDL'),
    ('vim', 'vim'),
    ('visual-basic', 'Visual Basic'),
    ('wasm', 'WebAssembly'),
    ('wiki', 'Wiki markup'),
    ('xeora', 'Xeora + XeoraCube'),
    ('xojo', 'Xojo (REALbasic)'),
    ('xquery', 'XQuery'),
    ('yaml', 'YAML'),
    ('zig', 'Zig'),

What's With the Versioning?

Our version numbers are based on the underlying version of PrismJS we use. For example, if we are using PrismJS 1.28.0, our versions will be named 1.28.0.X.

Running the Test Suite

Clone the repository, create a venv, pip install -e .[dev] and run pytest.

Release Notes & Contributors

Project Maintainers

This package was created by the staff of Wharton Research Data Services. We are thrilled that The Wharton School allows us a certain amount of time to contribute to open-source projects. We add features as they are necessary for our projects, and try to keep up with Issues and Pull Requests as best we can. Due to constraints of time (our full time jobs!), Feature Requests without a Pull Request may not be implemented, but we are always open to new ideas and grateful for contributions and our users.