Options

paths

Type: String|Array Default: Directory of input file.

Specifies directories to scan for @import directives when parsing. Default value is the directory of the source, which is probably what you want.

compress

Type: Boolean Default: False

Compress output by removing some whitespaces.

yuicompress

Type: Boolean Default: False

Compress output using cssmin.js

ieCompat

Type: Boolean Default: true

Enforce the css output is compatible with Internet Explorer 8.

For example, the data-uri function encodes a file in base64 encoding and embeds it into the generated CSS files as a data-URI. Because Internet Explorer 8 limits data-uris to 32KB, the ieCompat option prevents less from exceeding this.

optimization

Type: Integer Default: null

Set the parser's optimization level. The lower the number, the less nodes it will create in the tree. This could matter for debugging, or if you want to access the individual nodes in the tree.

strictImports

Type: Boolean Default: False

Force evaluation of imports.

syncImport

Type: Boolean Default: False

Read @import'ed files synchronously from disk.

dumpLineNumbers

Type: String Default: false

Configures -sass-debug-info support.

Accepts following values: comments, mediaquery, all.

relativeUrls

Type: boolean Default: false

Rewrite urls to be relative. False: do not modify urls.

report

Choices: false 'min' 'gzip' Default: false

Either do not report anything, report only minification result, or report minification and gzip results. This is useful to see exactly how well Less is performing, but using 'gzip' can add 5-10x runtime task execution.

Example ouput using 'gzip':

Original: 198444 bytes.
Minified: 101615 bytes.
Gzipped:  20084 bytes.