Escape and unescape HTML entities in Swift

What's New

🔖 v6.0.1 — 2020-10-01



  • Add Obj-C tests


  • Fix infinite loop when using Obj-C methods

HTMLString Swift 5.0 CocoaPods Carthage compatible Contact : @_alexaubry

HTMLString is a library written in Swift that allows your program to add and remove HTML entities in Strings.

Main features
🔏 Adds entities for ASCII and UTF-8/UTF-16 encodings
📝 Removes more than 2100 named entities (like &)
🔢 Supports removing decimal and hexadecimal entities
🐣 Designed to support Swift Extended Grapheme Clusters (→ 100% emoji-proof)
Fully unit tested
📚 Documented
🤖 Compatible with Objective-C

Supported Platforms

This package requires Swift 5 and Xcode 12.

  • iOS 9.0+
  • macOS 10.10+
  • tvOS 9.0+
  • watchOS 2.0+
  • Linux


Swift Package Manager

Add this line to your Package.swift :

.Package(url: "", from: "6.0.0")


Add this line to your Podfile:

pod 'HTMLString', '~> 6.0'


Add this line to your Cartfile:

github "alexaubry/HTMLString" ~> 6.0


HTMLString allows you to add and remove HTML entities from a String.

🔏 Adding HTML Entities (Escape)

When a character is not supported into the specified encoding, the library will replace it with a decimal entity (supported by all browsers supporting HTML 4 and later).

For instance, the & character will be replaced by &.

You can choose between ASCII and Unicode escaping:

  • Use the addingASCIIEntities function to escape for ASCII-encoded content
  • Use the addingUnicodeEntities function to escape for Unicode-compatible content

💡 Pro Tip: When your content supports UTF-8 or UTF-16, use Unicode escaping as it is faster and produces a less bloated output.


import HTMLString

let emoji = "My favorite emoji is 🙃"
let escapedEmoji = emoji.addingASCIIEntities() // "My favorite emoji is 🙃"
let noNeedToEscapeThatEmoji = emoji.addingUnicodeEntities() // "My favorite emoji is 🙃"

let snack = "Fish & Chips"
let escapedSnack = snack.addingASCIIEntities() // "Fish & Chips"
let weAlsoNeedToEscapeThisSnack = snack.addingUnicodeEntities() // "Fish & Chips"

📝 Removing HTML Entities (Unescape)

To remove all the HTML entities from a String, use the removingHTMLEntities function.


import HTMLString

let escapedEmoji = "My favorite emoji is 🙃"
let emoji = escapedEmoji.removingHTMLEntities() // "My favorite emoji is 🙃"

let escapedSnack = "Fish & Chips"
let snack = escapedSnack.removingHTMLEntities() // "Fish & Chips"

Objective-C API

With Obj-C interoperability, you can import and use the HTMLString module from in Objective-C code.

The library introduces a set of Objective-C specific APIs as categories on the NSString type:

  • -[NSString stringByAddingUnicodeEntities]; : Replaces every character incompatible with HTML Unicode encoding by a decimal HTML entitiy.
  • -[NSString stringByAddingASCIIEntities]; : Replaces every character incompatible with HTML ASCII encoding by a decimal HTML entitiy.
  • -[NSString stringByRemovingHTMLEntities]; : Replaces every HTML entity with the matching Unicode character.

Escaping Examples

@import HTMLString;

NSString *emoji = @"My favorite emoji is 🙃";
NSString *escapedEmoji = [emoji stringByAddingASCIIEntities]; // "My favorite emoji is 🙃"

NSString *snack = @"Fish & Chips";
NSString *escapedSnack = [snack stringByAddingUnicodeEntities]; // "Fish & Chips"

Unescaping Examples

@import HTMLString;

NSString *escapedEmoji = @"My favorite emoji is 🙃";
NSString *emoji = [escapedEmoji stringByRemovingHTMLEntities]; // "My favorite emoji is 🙃"

NSString *escapedSnack = @"Fish & Chips";
NSString *snack = [escapedSnack stringByRemovingHTMLEntities]; // "Fish & Chips"



HTMLString is available under the MIT license. See the LICENSE file for more info.


  • Swift Tools 5.3.0
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Last updated: Sun May 26 2024 19:44:57 GMT-0900 (Hawaii-Aleutian Daylight Time)