What's on this page

• Server
  • server.headers
• Optimize

Server and optimization

Server

server.headers

You can define custom HTTP headers, used by the local preview server.

server:
  headers:
    - path: <path> # Relative path, prefixed with a slash. Support "*" wildcard.
      headers:
        - key: <key>
          value: "<value>"

Example:

server:
  headers:
    - path: /*
      headers:
        - key: X-Frame-Options
          value: "SAMEORIGIN"
        - key: X-XSS-Protection
          value: "1; mode=block"
        - key: X-Content-Type-Options
          value: "nosniff"
        - key: Content-Security-Policy
          value: "default-src 'self'; object-src 'self'; img-src 'self'"
        - key: Strict-Transport-Security
          value: "max-age=31536000; includeSubDomains; preload"
    - path: /assets/*
      headers:
        - key: Cache-Control
          value: "public, max-age=31536000"
    - path: /foo.html
      headers:
        - key: Foo
          value: "bar"

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Optimize

The optimization options allow to enable compression of output files: HTML, CSS, JavaScript and image.

optimize:
  enabled: false     # enables files optimization (`false` by default)
  html:
    enabled: true    # enables HTML files optimization
    ext: [html, htm]   # supported files extensions
  css:
    enabled: true    # enables CSS files optimization
    ext: [css]         # supported files extensions
  js:
    enabled: true    # enables JavaScript files optimization
    ext: [js]          # supported files extensions
  images:
    enabled: true    # enables images files optimization
    ext: [jpeg, jpg, png, gif, webp, svg, avif] # supported files extensions

This option is disabled by default and can be enabled via:

optimize: true

Once the global option is enabled, the 4 file types will be processed.
It is possible to disable each of them via enabled: false and modify processed files extension via ext.

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