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Kirby Fingerprint

A little utility to add cache-busting fingerprints to assets (JS/CSS) in Kirby CMS. Re-uses the css() and js()-helpers in Kirby as much as possible.

When the files are updated, new hashes are added to the filenames automatically; so browser cache gets busted.

Installation

  • unzip master.zip as folder site/plugins/kirby-fingerprint or
  • git submodule add https://github.com/bvdputte/kirby-fingerprint.git site/plugins/kirby-fingerprint
  • composer require bvdputte/kirby-fingerprint

Apache .htaccess rules

💡 Add the following to your .htaccess file:

# Bust browsercache on CSS & JS files
# More info: https://github.com/bvdputte/kirby-fingerprint
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.+)\.([0-9a-z]{32})\.(js|css|png|jpe?g|gif|svg|ico)$ $1.$3 [L]

Place immediately after the RewriteBase definition.

Nginx rules

Add the following to your virtual host setup:

location ~ (.+)\.(?:[0-9,a-z]+)\.(js|css)$ {
    try_files $uri $1.$2;
}

Usage

css("assets/css/styles.css");
// Output: <link href="//localhost:3000/assets/css/styles.db5796ea5bf253bb7be3526eb083e068.css" rel="stylesheet">
js("assets/js/scripts.js");
// Output: <script src="//localhost:3000/assets/js/scripts.1e9dd0c95e7b12ce96729501c7585deb.js"></script>

Options

  1. Disable plugin:
// config.php
return [
    'bvdputte.fingerprint.disabled' => true
];
  1. Use a parameter instead of a hashed filename:
// config.php
return [
    'bvdputte.fingerprint.parameter' => true
];

This can be useful in situations where you don't want/can work with rewrites (e.g. in Laravel Valet). If possible; don't use parameters in production environment, use hashed filenames instead.

Advanced features

For more advanced features, such as subresource integrity, please checkout bnomei's kirby3-fingerprint plugin.

Disclaimer

This plugin is provided "as is" with no guarantee. Use it at your own risk and always test it yourself before using it in a production environment. If you find any issues, please create a new issue.

License

MIT

It is discouraged to use this plugin in any project that promotes racism, sexism, homophobia, animal abuse, violence or any other form of hate speech.