~quaff/html-asset-hasher

Asset cache busting for your static HTML files!

46a5a66 docs: set default tailwind to 4.0.0 in readme.

18 days ago

38875b4 fix(ci): use debian/testing image for builds.

18 days ago

#html-asset-hasher

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Asset cache busting for your static HTML files, with optional Tailwind CSS bundling!

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#Getting started

#Requirements

  • cargo
  • tailwindcss (optional)
#Tailwind CSS support (optional)

Refer to the Tailwind CSS documentation for configuration details. If Tailwind CSS isn't installed, the tailwindcss binary will be downloaded and used to generate the CSS.

#Installation

With cargo:

cargo install html-asset-hasher

Building from git:

cargo install --git https://git.sr.ht/~quaff/html-asset-hasher

With cargo-binstall:

cargo binstall html-asset-hasher

Note: Currently, only supports Linux; For improved build times in your CI/CD pipelines.

#How it works

html-asset-hasher currently supports <img>, <link> and <script> tags for images, stylesheets and scripts. It also offers Subresource Integrity (SRI) support.

Inspired by Trunk, html-asset-hasher looks for data-hasher, data-file and data-url attributes on <img>, <link> and <script> tags:

  • data-hasher: A flag attribute that indicates the tag should be parsed.
  • data-file: Specifies the relative path to the asset you want to hash.
  • data-url: Specifies the URL you want to download and hash.

Note: if both are present, data-url will take precedence over data-file.

That's it! These few attributes are all you need to enable cache busting.

Once you're ready, run html-asset-hasher against your static HTML file. By default, the generated files will be output to the dist/ directory in your root working directory.

#Usage

Usage: html-asset-hasher [OPTIONS] [PATHS]...

Arguments:
  [PATHS]...  Input HTML files or directories

Options:
  -o, --output <DIR>                         Output directory [default: dist]
  -s, --sha2-hash <SHA2_HASH>                SHA2 Hash algorithm [default: sha384]
  -t, --tailwind-version <TAILWIND_VERSION>  TailwindCSS version to download [default: 4.0.0]
      --debug                                Turn debugging information on
  -h, --help                                 Print help
  -V, --version                              Print version

#Example

Here’s an example of how to use html-asset-hasher in an HTML file (index.html):

<link data-hasher data-file="assets/favicon.ico" rel="icon" />
<link data-hasher data-file="src/styles/tailwind.css" rel="tailwind-css" />
<link data-hasher data-url="https://example.com/main.css" rel="stylesheet" />
<script
  data-hasher
  data-file="src/scripts/main.js"
  type="text/javascript"
></script>
<img data-hasher data-url="https://example.com/image.png" alt="example image" />

To process the file, run:

html-asset-hasher index.html

The generated HTML will be saved to dist/index.html, and it will look something like this:

<link
  rel="icon"
  href="favicon.iLfWPvSXyJusY1MS4bh2Gg-Eq5FzRNNFH2qBtptWOJ30c8AYPl5L7aR1dKtwp_no.ico"
/>
<link
  rel="stylesheet"
  href="tailwind.COunCCmPUZVOsiyGCRp7tDQxoo3jOzAScLezMwB8ygZPmPJCZHuLypHXRUbusv0N.css"
  integrity="sha384-COunCCmPUZVOsiyGCRp7tDQxoo3jOzAScLezMwB8ygZPmPJCZHuLypHXRUbusv0N"
/>
<link
  rel="stylesheet"
  href="main.E1QXOJQvt1C-Cewy5WvqKozszqqDMGydV4TeOw3lEoJS1xClsbKBBWyCFKMDi34V.css"
  integrity="sha384-E1QXOJQvt1C+Cewy5WvqKozszqqDMGydV4TeOw3lEoJS1xClsbKBBWyCFKMDi34V"
/>
<script
  src="main.1H217gwSVyLSIfaLxHbE7dRb3v4mYCKbpQvzx0cegeju1MVsGrX5xXxAvs_HgeFs.js"
  integrity="sha384-1H217gwSVyLSIfaLxHbE7dRb3v4mYCKbpQvzx0cegeju1MVsGrX5xXxAvs+HgeFs"
  crossorigin="anonymous"
></script>
<img
  src="image.e1QXOJQvt1C+Cewy5WvqKozszqqDMGydV4TeOw3lEoJS1xClsbKBBWyCFKMDi34V.png"
  alt="example image"
/>

For a full working demo, check out the code for my website.

#Contributing

To contribute to html-asset-hasher, you'll need npm on your system, install nodejs-18 or higher with your package manager of choice.

Next, run the following script in the root of the repository to install the necessary Git hooks along with commitlint:

./contributing.sh

These hooks will ensure that your commits adhere to project standards.

For more information on commit conventions, refer to the Conventional Commits guidelines.