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    5.0.2 • Public • Published

    Storybook Addon HTML Adjustments

    This fork is adjusted version of

    If you are not sure which version you should use, always use the original one.

    The reason for this fork was ability to dispatch message html-plugin-code-received to story's iframe, after rendered HTML code is updated.

        useEffect(() => {
            setCode(prettierFormat(html, prettierConfig));
            const event = new Event('html-plugin-code-received');
        }, [html]);

    Storybook Addon HTML

    This addon for Storybook adds a tab that displays the compiled HTML for each story. It uses highlight.js for syntax highlighting.

    Animated preview

    Getting Started

    With NPM:

    npm i --save-dev @whitespace/storybook-addon-html

    With Yarn:

    yarn add -D @whitespace/storybook-addon-html

    Register addon

    // .storybook/main.js
    module.exports = {
      // ...
      addons: [
        // ...


    The HTML is formatted with Prettier. You can override the Prettier config (except parser and plugins) by providing an object following the Prettier API override format in the html parameter:

    // .storybook/preview.js
    export const parameters = {
      // ...
      html: {
        prettier: {
          tabWidth: 4,
          useTabs: false,
          htmlWhitespaceSensitivity: 'strict',

    You can override the wrapper element selector used to grab the component HTML.

    export const parameters = {
      html: {
        root: '#my-custom-wrapper', // default: #root

    When using Web Components, the HTML will contain empty comments, i.e. <!---->. If you want to remove these, use the removeEmptyComments parameter:

    export const parameters = {
      html: {
        removeEmptyComments: true, // default: false

    You can override the showLineNumbers and wrapLines settings for the syntax highlighter by using the highlighter parameter:

    export const parameters = {
      html: {
        highlighter: {
          showLineNumbers: true, // default: false
          wrapLines: false, // default: true

    Supported frameworks

    As of version 4.0.0 all frameworks are supported per default 🎉


    npm i @elliason/storybook-addon-html

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    • elliason