Encode & decode XML and HTML entities with ease & speed
npm install @hyperz111/entitiesThis a temporary fork from original entities with name @hyperz111/entities, with some differents:
1. This is ESM-only.
2. Need Node.js 20 or higher.
If this is merged back to upstream, i will deprecated this. You can visit this temporary branch.
Encode & decode HTML & XML entities with ease & speed.
- 😇 Tried and true: entities is used by many popular libraries; eg.
htmlparser2, the official
AWS SDK and
commonmark use it to process
HTML entities.
- ⚡️ Fast: entities is the fastest library for decoding HTML entities (as of
September 2025); see performance.
- 🎛 Configurable: Get an output tailored for your needs. You are fine with
UTF8? That'll save you some bytes. Prefer to only have ASCII characters? We
can do that as well!
npm install entities
``javascript
import * as entities from "entities";
// Encoding
entities.escapeUTF8("& ü"); // "& ü"
entities.encodeXML("& ü"); // "& ü"
entities.encodeHTML("& ü"); // "& ü"
// Decoding
entities.decodeXML("asdf & ÿ ü '"); // "asdf & ÿ ü '"
entities.decodeHTML("asdf & ÿ ü '"); // "asdf & ÿ ü '"
`
Benchmarked in September 2025 with Node v24.6.0 on Apple M2 using tinybench.avg (μs)
Higher ops/s is better; is the mean time per operation.scripts/benchmark.ts
See to reproduce.
| Library | Version | ops/s | avg (μs) | ±% | slower |
| -------------- | ------- | --------- | -------- | ---- | ------ |
| entities | 7.0.0 | 5,838,416 | 175.57 | 0.06 | — |
| html-entities | 2.6.0 | 2,919,637 | 347.77 | 0.33 | 50.0% |
| he | 1.2.0 | 2,318,438 | 446.48 | 0.70 | 60.3% |
| parse-entities | 4.0.2 | 852,855 | 1,199.51 | 0.36 | 85.4% |
| Library | Version | ops/s | avg (μs) | ±% | slower |
| -------------- | ------- | --------- | -------- | ---- | ------ |
| entities | 7.0.0 | 2,770,115 | 368.09 | 0.11 | — |
| html-entities | 2.6.0 | 1,491,963 | 679.96 | 0.58 | 46.2% |
| he | 1.2.0 | 481,278 | 2,118.25 | 0.61 | 82.6% |
| Library | Version | ops/s | avg (μs) | ±% | slower |
| -------------- | ------- | --------- | -------- | ---- | ------ |
| entities | 7.0.0 | 4,616,468 | 223.84 | 0.17 | — |
| he | 1.2.0 | 3,659,301 | 280.76 | 0.58 | 20.7% |
| html-entities | 2.6.0 | 3,555,301 | 296.63 | 0.84 | 23.0% |
Note: Micro-benchmarks may vary across machines and Node versions.
---
> What methods should I actually use to encode my documents?
If your target supports UTF-8, the escapeUTF8 method is going to be your bestencodeHTML
choice. Otherwise, use either or encodeXML based on whether
you're dealing with an HTML or an XML document.
You can have a look at the options for the encode and decode methods to see
everything you can configure.
> When should I use strict decoding?
When strict decoding, entities not terminated with a semicolon will be ignored.
This is helpful for decoding entities in legacy environments.
> Why should I use entities instead of alternative modules?
As of September 2025, entities is faster than other modules. Still, this is
not a differentiated space and other modules can catch up.
More importantly, you might already have entities in your dependency graphcheerio
(as a dependency of eg. , or htmlparser2), and including it directlynode_modules
might not even increase your bundle size. The same is true for other entity
libraries, so have a look through your directory!
> Does entities support tree shaking?
Yes! Note that for best results, you should not use the encode and decode functions,
as they wrap around a number of other functions, all of which will remain in the bundle.
Instead, use the functions that you need directly.
---
This library wouldn't be possible without the work of these individuals. Thanks
to
- @mathiasbynens for his explanations about
character encodings, and his library he, which was one of the inspirationsentities
for
- @inikulin for his work on optimized tries for
decoding HTML entities for the projecthtml-entities
- @mdevils for taking on the challenge of
producing a quick entity library with his library. entities
would be quite a bit slower if there wasn't any competition. Right now
is on top, but we'll see how long that lasts!
---
License: BSD-2-Clause
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