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A Brunch plugin witch rename assets with a SHA (generate from file content) to fingerprinted it.

You're allow to fingerprint specific files, assets folders, generated files and css linked assets.



npm install fingerprint-brunch --save-dev



Optional You can override fingerprint-brunch's default options by updating your with your custom parameters.

  • manifest: (String) Defaults to ./assets.json
    • Mapping fingerprinted files
  • srcBasePath: (String) Defaults to exemple/
    • The base Path you want to remove from the key string in the mapping file
  • destBasePath: (String) Defaults to out/
    • The base Path you want to remove from the value string in the mapping file
  • hashLength: (Integer) Defaults to 8
    • How many digits of the SHA1
  • autoClearOldFiles: (Boolean) Defaults to false
    • Remove old fingerprinted files (usefull in development env)
  • targets: (String|Array) Defaults to *
    • Files you want to hash, default is all if not you can put an array of files in your joinTo like ['app.js', 'vendor.js', ...]
  • environments: (Array) Defaults to ['production']
    • Environment to fingerprint files
  • alwaysRun: (Boolean) Defaults to false
    • Force fingerprint-brunch to run in all environments when true.
  • autoReplaceAndHash: (Boolean) Defaults to false
    • Find assets in your jointTo files. It will be finded with url('path/to/assets.jpg') in your css (for now)
  • publicRootPath: (string) Defaults to /public
    • For support multiple themes, you can set the public root path, exemple :
    • My config.paths.public is ../../public/theme/theme-1/ in css your fonts, images will be linked like that : /theme/theme-1/img/troll.png.
    • You must set publicRootPath with ../../public to conserve correct link in your css..
  • manifestGenerationForce: (Boolean) Defaults to false
    • Force the generation of the manifest, event if there are no fingerprinted files
  • assetsPatterns: (RegExp Object) Defaults to new RegExp(/url\([\'\"]?[a-zA-Z0-9\-\/_.:]+\.(woff|woff2|eot|ttf|otf|jpg|jpeg|png|bmp|gif|svg)\??\#?[a-zA-Z0-9\-\/_]*[\'\"]?\)/g)
    • Regex to match assets in css with url() attribute
  • paramettersPattern: (Regex) Defaults to /(\?|\&|\#)([^=]?)([^&]*)/gm
    • Match hash and parameters in an URL


exports.config =
  # ... 
      manifest: './assets.json'
      srcBasePath: './exemple/'
      destBasePath: './out/'
      hashLength: 8
      autoClearOldFiles: false
      targets: '*'
      environments: ['production']
      alwaysRun: false
      autoReplaceAndHash: false
      publicRootPath: './public'
      manifestGenerationForce: false
      foldersToFingerprint: false
      assetsToFingerprint: false

The Manifest

  "css/master.css": "css/master-364b42a1.css",
  "js/master.js": "js/master-cb60c02b.js",
  "img/troll.png": "img/troll-5f2d5cbe.png",
  "fonts/font.eot": "fonts/font-45d860a3.eot",
  "fonts/font.woff": "fonts/font-6ced13b9.woff",
  "fonts/font.ttf": "fonts/font-82c653e7.ttf",
  "fonts/font.svg": "fonts/font-52343d4f.svg"
Fingerprint All

To get this kind of result in your manifest you need to :

  • Set autoReplaceAndHash to true
  • Or set foldersToFingerprint pointing to one folder (or many) ./img
  • Or set assetsToFingerprint pointing to a file (or many) ./img/troll.png
Cleaning Manifest

Use srcBasePath and destBasePath to remove some part of path files in the manifest.


Testing / Issues

Run npm i && npm test


Pull requests are welcome. If you add functionality, then please add unit tests to cover it.


« Copyright © David Lepaux

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

The Software is provided “as is”, without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the Software. »


  • Add option to fingerprint some specific assets
    • By configure it by naming it specifically
    • By configure a path (in public from assets) and resolve all