Sveltekit HTML Minifier

!NPM Version !GitHub Actions Workflow Status

Sveltekit Adapter to Minify the preload HTML page in case using CSR/Preload by html-minifier-terser.

> [!WARNING]
> This adaptor will only minify from the prerendered HTML output path, If the page is rendering on runtime it will not minify.

For SSR minify @leoj3n had share a solution here https://github.com/ntsd/sveltekit-html-minifier/issues/5

Installation

npm i -D sveltekit-html-minifier

Usage

Add the adapter to your svelte.config.js file. Place your default adapter as the first parameter. This will run after the default adapter has finished rendering.

``js
import adapter from "@sveltejs/adapter-static";
import htmlMinifierAdaptor from "sveltekit-html-minifier";

export default {
kit: {
adapter: htmlMinifierAdaptor(adapter()),
},
};
`

Make sure that the page you want to minify have export const prerender = true; flag set and the output path is correct for the adaptor, otherwise it will not minify.

$3

You can pass additional options to the adapter. For example

`js
import adapter from "@sveltejs/adapter-static";
import htmlMinifierAdaptor from "sveltekit-html-minifier";

export default {
kit: {
adapter: htmlMinifierAdaptor(
adapter({
pages: "build",
}),
{
// your build path (same as adapter static pages)
pages: "build",
// custom html-minifier-terser options
// https://github.com/terser/html-minifier-terser#options-quick-reference
minifierOptions: {},
}
),
},
};
`

- pages (string): Specifies the build path. This should be the same as the adapter static pages.
- minifierOptions (object): Custom options for html-minifier-terser.

for other adaptor, you probably need to specify the HTML output path:

@sveltejs/adapter-cloudflare

`js
htmlMinifierAdaptor(adapter(), { pages: ".svelte-kit/cloudflare" })
`

@sveltejs/adapter-vercel

`js
htmlMinifierAdaptor(adapter(), { pages: ".svelte-kit/output/prerendered/pages" })
``