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Fastest HTML entities encode/decode library.

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html-entities

Fastest HTML entities library.

Comes with both TypeScript and Flow types.

Installation

$ npm install html-entities

Usage

encode(text, options)

Encodes text replacing HTML special characters (<>&"') plus other character ranges depending on mode option value.

import {encode} from 'html-entities';

encode('< > " \' & © ∆');
// -> '&lt; &gt; &quot; &apos; &amp; © ∆'

encode('< ©', {mode: 'nonAsciiPrintable'});
// -> '&lt; &copy;'

encode('< ©', {mode: 'nonAsciiPrintable', level: 'xml'});
// -> '&lt; &#169;'

Options:

level

  • all alias to html5 (default).
  • html5 uses HTML5 named references.
  • html4 uses HTML4 named references.
  • xml uses XML named references.

mode

  • specialChars encodes only HTML special characters (default).
  • nonAscii encodes HTML special characters and everything outside of the ASCII character range.
  • nonAsciiPrintable encodes HTML special characters and everything outiside of the ASCII printable characters.
  • extensive encodes all non-printable characters, non-ASCII characters and all characters with named references.

numeric

  • decimal uses decimal numbers when encoding html entities. i.e. &#169; (default).
  • hexadecimal uses hexadecimal numbers when encoding html entities. i.e. &#xa9;.

decode(text, options)

Decodes text replacing entities to characters. Unknown entities are left as is.

import {decode} from 'html-entities';

decode('&lt; &gt; &quot; &apos; &amp; &#169; &#8710;');
// -> '< > " \' & © ∆'

decode('&copy;', {level: 'html5'});
// -> '©'

decode('&copy;', {level: 'xml'});
// -> '&copy;'

Options:

level

  • all alias to html5 (default).
  • html5 uses HTML5 named references.
  • html4 uses HTML4 named references.
  • xml uses XML named references.

scope

  • body emulates behavior of browser when parsing tag bodies: entities without semicolon are also replaced (default).
  • attribute emulates behavior of browser when parsing tag attributes: entities without semicolon are replaced when not followed by equality sign =.
  • strict ignores entities without semicolon.

decodeEntity(text, options)

Decodes a single HTML entity. Unknown entitiy is left as is.

import {decodeEntity} from 'html-entities';

decodeEntity('&lt;');
// -> '<'

decodeEntity('&copy;', {level: 'html5'});
// -> '©'

decodeEntity('&copy;', {level: 'xml'});
// -> '&copy;'

Options:

level

  • all alias to html5 (default).
  • html5 uses HTML5 named references.
  • html4 uses HTML4 named references.
  • xml uses XML named references.

Performance

Statistically significant comparison with other libraries using benchmark.js. Results by this library are marked with *. The source code of the benchmark is available at benchmark/benchmark.ts.

Common

    Initialization / Load speed

      * #1: html-entities x 2,544,400 ops/sec ±4.52% (77 runs sampled)
        #2: entities x 1,757,526 ops/sec ±3.99% (81 runs sampled)
        #3: he x 1,281,542 ops/sec ±9.31% (74 runs sampled)

HTML5

    Encode test

      * #1: html-entities.encode - html5, nonAscii x 402,711 ops/sec ±0.61% (92 runs sampled)
      * #2: html-entities.encode - html5, nonAsciiPrintable x 402,631 ops/sec ±2.99% (92 runs sampled)
      * #3: html-entities.encode - html5, extensive x 269,162 ops/sec ±0.26% (97 runs sampled)
        #4: entities.encodeNonAsciiHTML x 260,447 ops/sec ±2.53% (95 runs sampled)
        #5: entities.encodeHTML x 101,059 ops/sec ±3.99% (91 runs sampled)
        #6: he.encode x 93,180 ops/sec ±3.17% (92 runs sampled)

    Decode test

      * #1: html-entities.decode - html5, attribute x 340,043 ops/sec ±2.82% (92 runs sampled)
      * #2: html-entities.decode - html5, body x 330,002 ops/sec ±1.52% (87 runs sampled)
      * #3: html-entities.decode - html5, strict x 320,582 ops/sec ±5.34% (88 runs sampled)
        #4: entities.decodeHTMLStrict x 286,294 ops/sec ±3.14% (89 runs sampled)
        #5: entities.decodeHTML x 232,856 ops/sec ±3.05% (90 runs sampled)
        #6: he.decode x 163,300 ops/sec ±0.62% (92 runs sampled)

HTML4

    Encode test

      * #1: html-entities.encode - html4, nonAsciiPrintable x 391,885 ops/sec ±0.27% (95 runs sampled)
      * #2: html-entities.encode - html4, nonAscii x 400,086 ops/sec ±2.54% (94 runs sampled)
      * #3: html-entities.encode - html4, extensive x 193,623 ops/sec ±2.70% (92 runs sampled)

    Decode test

      * #1: html-entities.decode - html4, attribute x 356,174 ops/sec ±0.49% (96 runs sampled)
      * #2: html-entities.decode - html4, body x 342,666 ops/sec ±2.38% (91 runs sampled)
      * #3: html-entities.decode - html4, strict x 341,667 ops/sec ±4.46% (87 runs sampled)

XML

    Encode test

      * #1: html-entities.encode - xml, nonAscii x 450,968 ops/sec ±2.73% (92 runs sampled)
      * #2: html-entities.encode - xml, nonAsciiPrintable x 432,058 ops/sec ±4.12% (93 runs sampled)
      * #3: html-entities.encode - xml, extensive x 265,336 ops/sec ±3.41% (93 runs sampled)
        #4: entities.encodeXML x 254,862 ops/sec ±3.01% (95 runs sampled)

    Decode test

      * #1: html-entities.decode - xml, strict x 432,820 ops/sec ±0.53% (89 runs sampled)
      * #2: html-entities.decode - xml, attribute x 426,037 ops/sec ±0.75% (94 runs sampled)
      * #3: html-entities.decode - xml, body x 424,618 ops/sec ±3.47% (93 runs sampled)
        #4: entities.decodeXML x 378,536 ops/sec ±2.48% (93 runs sampled)

Escaping

    Escape test

      * #1: html-entities.encode - xml, specialChars x 1,424,362 ops/sec ±0.55% (95 runs sampled)
        #2: he.escape x 962,420 ops/sec ±3.12% (94 runs sampled)
        #3: entities.escapeUTF8 x 443,138 ops/sec ±1.06% (90 runs sampled)
        #4: entities.escape x 197,515 ops/sec ±2.73% (91 runs sampled)

License

MIT

Security contact information

To report a security vulnerability, please use the Tidelift security contact. Tidelift will coordinate the fix and disclosure.

html-entities for enterprise

Available as part of the Tidelift Subscription

The maintainers of html-entities and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.

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Score

Popularity59/100
Quality85/100
Maintenance100/100