npmpackage.info

Gathering detailed insights and metrics for html-minifier-terser

html-minifier-terser

actively maintained fork of html-minifier - minify HTML, CSS and JS code using terser - supports ES6 code

7.2.0

385

MIT

JavaScript

2,061,301,237 3.3

Installations

npm install html-minifier-terser

Pull Requests

Open

9

Total

83

Closed

19

Merged

55

Issues

Open

25

Total

102

Closed

77

Releases

v7.2.0

Published on 11 Apr 2023

v7.1.0

Published on 22 Nov 2022

v7.0.0

Published on 15 Aug 2022

v7.0.0-beta.0

Published on 08 Jun 2022

v7.0.0-alpha.2

Published on 10 Mar 2022

v7.0.0-alpha.1

Published on 08 Jan 2022

View all 19 releases

Developer

terser

Developer Guide

BETA

Module System

ESM

Min. Node Version

^14.13.1 || >=16.0.0

Typescript Support

No

Node Version

18.15.0

NPM Version

9.5.0 Statistics

385 Stars

1,499 Commits

32 Forks

9 Watching

4 Branches

88 Contributors

Updated on 22 Nov 2024

Languages

JavaScript (99.92%)

Shell (0.08%)

Total Downloads

Cumulative downloads

Total Downloads

2,061,301,237

Last day

-6.1%

2,117,906

Compared to previous day

Last week

2.8%

11,904,235

Compared to previous week

Last month

5.9%

50,339,953

Compared to previous month

Last year

-7.8%

576,482,502

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Versions

HTMLMinifier

HTMLMinifier is a highly configurable, well-tested, JavaScript-based HTML minifier.

Installation

From NPM for use as a command line app:

1npm install html-minifier-terser -g

From NPM for programmatic use:

1npm install html-minifier-terser

Usage

Note that almost all options are disabled by default. Experiment and find what works best for you and your project.

For command line usage please see html-minifier-terser --help for a list of available options.

Sample command line:

1html-minifier-terser --collapse-whitespace --remove-comments --minify-js true

Node.js

1const { minify } = require('html-minifier-terser');
2
3const result = await minify('<p title="blah" id="moo">foo</p>', {
4  removeAttributeQuotes: true,
5});
6result; // '<p title=blah id=moo>foo</p>'

See corresponding blog post for all the gory details of how it works, description of each option, testing results and conclusions.

Also see corresponding Ruby wrapper, and for Node.js, Grunt plugin, Gulp plugin, Koa middleware wrapper and Express middleware wrapper.

For lint-like capabilities take a look at HTMLLint.

Minification comparison

How does HTMLMinifier compare to other solutions — HTML Minifier from Will Peavy (1st result in Google search for "html minifier") as well as htmlcompressor.com and minimize?

Site	Original size (KB)	HTMLMinifier	minimize	Will Peavy	htmlcompressor.com
Google	52	48	52	54	n/a
Stack Overflow	177	143	154	154	n/a
HTMLMinifier	252	171	230	250	n/a
Bootstrap CSS	271	260	269	229	n/a
BBC	355	324	353	344	n/a
Amazon	466	430	456	474	n/a
Twitter	469	394	462	513	n/a
Wikipedia	703	569	682	708	n/a
Eloquent Javascript	870	815	840	864	n/a
NBC	1701	1566	1689	1705	n/a
New York Times	1731	1583	1726	1680	n/a
ES draft	6296	5538	5733	n/a	n/a

Options Quick Reference

Most of the options are disabled by default.

Option	Description	Default
`caseSensitive`	Treat attributes in case sensitive manner (useful for custom HTML tags)	`false`
`collapseBooleanAttributes`	Omit attribute values from boolean attributes	`false`
`collapseInlineTagWhitespace`	Don't leave any spaces between `display:inline;` elements when collapsing. Must be used in conjunction with `collapseWhitespace=true`	`false`
`collapseWhitespace`	Collapse white space that contributes to text nodes in a document tree	`false`
`conservativeCollapse`	Always collapse to 1 space (never remove it entirely). Must be used in conjunction with `collapseWhitespace=true`	`false`
`continueOnParseError`	Handle parse errors instead of aborting.	`false`
`customAttrAssign`	Arrays of regex'es that allow to support custom attribute assign expressions (e.g. `'<div flex?="{{mode != cover}}"></div>'`)	`[ ]`
`customAttrCollapse`	Regex that specifies custom attribute to strip newlines from (e.g. `/ng-class/`)
`customAttrSurround`	Arrays of regex'es that allow to support custom attribute surround expressions (e.g. `<input {{#if value}}checked="checked"{{/if}}>`)	`[ ]`
`customEventAttributes`	Arrays of regex'es that allow to support custom event attributes for `minifyJS` (e.g. `ng-click`)	`[ /^on[a-z]{3,}$/ ]`
`decodeEntities`	Use direct Unicode characters whenever possible	`false`
`html5`	Parse input according to HTML5 specifications	`true`
`ignoreCustomComments`	Array of regex'es that allow to ignore certain comments, when matched	`[ /^!/, /^\s*#/ ]`
`ignoreCustomFragments`	Array of regex'es that allow to ignore certain fragments, when matched (e.g. `<?php ... ?>`, `{{ ... }}`, etc.)	`[ /<%[\s\S]?%>/, /<\?[\s\S]?\?>/ ]`
`includeAutoGeneratedTags`	Insert tags generated by HTML parser	`true`
`keepClosingSlash`	Keep the trailing slash on singleton elements	`false`
`maxLineLength`	Specify a maximum line length. Compressed output will be split by newlines at valid HTML split-points
`minifyCSS`	Minify CSS in style elements and style attributes (uses clean-css)	`false` (could be `true`, `Object`, `Function(text, type)`)
`minifyJS`	Minify JavaScript in script elements and event attributes (uses Terser)	`false` (could be `true`, `Object`, `Function(text, inline)`)
`minifyURLs`	Minify URLs in various attributes (uses relateurl)	`false` (could be `String`, `Object`, `Function(text)`)
`noNewlinesBeforeTagClose`	Never add a newline before a tag that closes an element	`false`
`preserveLineBreaks`	Always collapse to 1 line break (never remove it entirely) when whitespace between tags include a line break. Must be used in conjunction with `collapseWhitespace=true`	`false`
`preventAttributesEscaping`	Prevents the escaping of the values of attributes	`false`
`processConditionalComments`	Process contents of conditional comments through minifier	`false`
`processScripts`	Array of strings corresponding to types of script elements to process through minifier (e.g. `text/ng-template`, `text/x-handlebars-template`, etc.)	`[ ]`
`quoteCharacter`	Type of quote to use for attribute values (' or ")
`removeAttributeQuotes`	Remove quotes around attributes when possible	`false`
`removeComments`	Strip HTML comments	`false`
`removeEmptyAttributes`	Remove all attributes with whitespace-only values	`false` (could be `true`, `Function(attrName, tag)`)
`removeEmptyElements`	Remove all elements with empty contents	`false`
`removeOptionalTags`	Remove optional tags	`false`
`removeRedundantAttributes`	Remove attributes when value matches default.	`false`
`removeScriptTypeAttributes`	Remove `type="text/javascript"` from `script` tags. Other `type` attribute values are left intact	`false`
`removeStyleLinkTypeAttributes`	Remove `type="text/css"` from `style` and `link` tags. Other `type` attribute values are left intact	`false`
`removeTagWhitespace`	Remove space between attributes whenever possible. Note that this will result in invalid HTML!	`false`
`sortAttributes`	Sort attributes by frequency	`false`
`sortClassName`	Sort style classes by frequency	`false`
`trimCustomFragments`	Trim white space around `ignoreCustomFragments`.	`false`
`useShortDoctype`	Replaces the `doctype` with the short (HTML5) doctype	`false`

Sorting attributes / style classes

Minifier options like sortAttributes and sortClassName won't impact the plain-text size of the output. However, they form long repetitive chains of characters that should improve compression ratio of gzip used in HTTP compression.

Special cases

Ignoring chunks of markup

If you have chunks of markup you would like preserved, you can wrap them .

Minifying JSON-LD

You can minify script tags with JSON-LD by setting the option { processScripts: ['application/ld+json'] }. Note that this minification is very rudimentary, it is mainly useful for removing newlines and excessive whitespace.

Preserving SVG tags

SVG tags are automatically recognized, and when they are minified, both case-sensitivity and closing-slashes are preserved, regardless of the minification settings used for the rest of the file.

Working with invalid markup

HTMLMinifier can't work with invalid or partial chunks of markup. This is because it parses markup into a tree structure, then modifies it (removing anything that was specified for removal, ignoring anything that was specified to be ignored, etc.), then it creates a markup out of that tree and returns it.

Input markup (e.g. <p id="">foo)

↓

Internal representation of markup in a form of tree (e.g. { tag: "p", attr: "id", children: ["foo"] })

↓

Transformation of internal representation (e.g. removal of id attribute)

↓

Output of resulting markup (e.g. <p>foo</p>)

HTMLMinifier can't know that original markup was only half of the tree; it does its best to try to parse it as a full tree and it loses information about tree being malformed or partial in the beginning. As a result, it can't create a partial/malformed tree at the time of the output.

Running benchmarks

Benchmarks for minified HTML:

1cd benchmarks
2npm install
3npm run benchmark

Running local server

1npm run serve

No vulnerabilities found.

10

Dangerous-Workflow

Determines if the project's GitHub Action workflows avoid dangerous patterns.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

10

License

Determines if the project has defined a license.

5

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

Reason

dependency not pinned by hash detected -- score normalized to 5

Details

Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/benchmarks.yml:15: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/benchmarks.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/benchmarks.yml:18: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/benchmarks.yml/master?enable=pin
Warn: third-party GitHubAction not pinned by hash: .github/workflows/benchmarks.yml:35: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/benchmarks.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/main.yaml:14: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/main.yaml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/main.yaml:15: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/main.yaml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/main.yaml:34: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/main.yaml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/main.yaml:35: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/main.yaml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pages.yml:20: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/pages.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pages.yml:21: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/pages.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pages.yml:26: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/pages.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pages.yml:38: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/pages.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pages.yml:53: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/pages.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/publish.yml:24: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/publish.yml/master?enable=pin
Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/publish.yml:27: update your workflow using https://app.stepsecurity.io/secureworkflow/terser/html-minifier-terser/publish.yml/master?enable=pin
Warn: npmCommand not pinned by hash: .github/workflows/main.yaml:21
Warn: npmCommand not pinned by hash: .github/workflows/main.yaml:41
Info: 0 out of 13 GitHub-owned GitHubAction dependencies pinned
Info: 0 out of 1 third-party GitHubAction dependencies pinned
Info: 6 out of 8 npmCommand dependencies pinned

2

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Maintained

Determines if the project is "actively maintained".

0

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

SAST

Determines if the project uses static code analysis.

0

Fuzzing

Determines if the project uses fuzzing.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

3.3

/10

Last Scanned on 2024-11-18

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

html-minifier-terser

Installations

Pull Requests

9

83

19

55

Issues

25

102

77

Releases

Developer

Developer Guide

ESM

^14.13.1 || >=16.0.0

No

18.15.0

9.5.0

Statistics

Languages

Total Downloads

2,061,301,237

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

Dev Dependencies

HTMLMinifier

Installation

Usage

Node.js

Minification comparison

Options Quick Reference

Sorting attributes / style classes

Special cases

Ignoring chunks of markup

Minifying JSON-LD

Preserving SVG tags

Working with invalid markup

Running benchmarks

Running local server

10

10

10

5

2

0

0

0

0

0

0

0

3.3

/10