What is html-minifier?
The html-minifier npm package is a highly configurable, well-tested, JavaScript-based HTML minifier, with lint-like capabilities. It compresses HTML files by removing unnecessary whitespace, comments, and other unneeded characters without changing the functionality of the HTML. This can result in faster page load times and reduced bandwidth usage.
What are html-minifier's main functionalities?
Minify HTML
This feature collapses whitespace and strips out unnecessary spaces and line breaks to minimize the HTML file size.
const htmlMinifier = require('html-minifier').minify;
let result = htmlMinifier('<p> Some HTML </p>', {collapseWhitespace: true});
console.log(result); // Output: '<p>Some HTML</p>'
Remove Comments
This feature removes HTML comments to reduce the file size.
const htmlMinifier = require('html-minifier').minify;
let result = htmlMinifier('<!-- This is a comment --> <div>Content</div>', {removeComments: true});
console.log(result); // Output: '<div>Content</div>'
Remove Optional Tags
This feature removes optional tags like <html>, <head>, <body>, and <colgroup> when they are not necessary.
const htmlMinifier = require('html-minifier').minify;
let result = htmlMinifier('<html><head><title>Title</title></head><body><p>Content</p></body></html>', {removeOptionalTags: true});
console.log(result); // Output: '<title>Title</title><p>Content</p>'
Minify CSS
This feature minifies inline CSS reducing its size by removing unnecessary characters and whitespace.
const htmlMinifier = require('html-minifier').minify;
let result = htmlMinifier('<style> .class { font-size: 18px; } </style>', {minifyCSS: true});
console.log(result); // Output: '<style>.class{font-size:18px}</style>'
Minify JavaScript
This feature minifies inline JavaScript code by removing unnecessary characters and whitespace.
const htmlMinifier = require('html-minifier').minify;
let result = htmlMinifier('<script> var name = "Your Name"; </script>', {minifyJS: true});
console.log(result); // Output: '<script>var name="Your Name";</script>'
Other packages similar to html-minifier
gulp-htmlmin
This package is a gulp plugin that minifies HTML. It wraps around html-minifier and provides a similar set of features but is designed to be used within the gulp streaming build system.
minimize
Minimize is another HTML minifier with a focus on configurability and performance. It offers a different API and plugin system compared to html-minifier, which might be preferred in certain development environments.
prettydiff
Prettydiff is a code beautifier as well as a minifier. It supports HTML, CSS, and JavaScript. While it provides similar minification features, it also includes code comparison and beautification options, which html-minifier does not.