This plugin will cause hashes to be based on the relative path of the module, generating a four character string as the module id. Suggested for use in production.

new webpack.ids.HashedModuleIdsPlugin({
  // Options...


This plugin supports the following options:

  • context: The context directory (absolute path) for creating names.
  • hashFunction: The hashing algorithm to use, defaults to 'md4'. All functions from Node.JS' crypto.createHash are supported.
  • hashDigest: The encoding to use when generating the hash, defaults to 'base64'. All encodings from Node.JS' hash.digest are supported.
  • hashDigestLength: The prefix length of the hash digest to use, defaults to 4. Note that some generated ids might be longer than specified here, to avoid module id collisions.


Here's an example of how this plugin might be used:

new webpack.ids.HashedModuleIdsPlugin({
  context: __dirname,
  hashFunction: 'sha256',
  hashDigest: 'hex',
  hashDigestLength: 20,

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