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Base64 encoding and decoding

Last updated on : 2023-03-20

Note:

Base64 encoding and decoding shows a browser compatibility score of 97. This is a collective score out of 100 to represent browser support of a web technology. The higher this score is, the greater is the browser compatibility. The browser compatibility score is not a 100% reflection for every browser and the web technology support. However, it does give you an estimate on how much you should rely on a particular web technology in terms of browser compatibility.

Overview

Atob-btoa provides a JavaScript API for encoding and decoding strings to and from Base64: atob and btoa.

Specifications

HTML Standard # dom-atob-dev

Syntax

var decodedData = atob(encodedData);

Code snippets

index.html

Source:index.html

Browser Compatibility

Base64 encoding and decoding on IE is fully supported on 10-11, partially supported on None of the versions, and not supported on 5.5-9 IE versions.
Base64 encoding and decoding on Edge is fully supported on 12-111, partially supported on None of the versions, and not supported on below 12 Edge versions.
Base64 encoding and decoding on Firefox is fully supported on 2-113, partially supported on None of the versions, and not supported on below 2 Firefox versions.
Base64 encoding and decoding on Chrome is fully supported on 4-114, partially supported on None of the versions, and not supported on below 4 Chrome versions.
Base64 encoding and decoding on Safari is fully supported on 3.2-16.4, partially supported on None of the versions, and not supported on below 3.2 Safari versions.
Base64 encoding and decoding on Opera is fully supported on 10.6-95, partially supported on None of the versions, and not supported on 9.5-10 Opera versions.
Base64 encoding and decoding on Safari on iOS is fully supported on 3.2-16.4, partially supported on None of the versions, and not supported on below 3.2 Safari on iOS versions.
Base64 encoding and decoding on Android Browser is fully supported on 2.1-111, partially supported on None of the versions, and not supported on below 2.1 Android Browser versions.
Base64 encoding and decoding on Opera Mobile is fully supported on 11.5-73, partially supported on None of the versions, and not supported on below 11.5 Opera Mobile versions.
Base64 encoding and decoding on Chrome for Android is fully supported on 97-111, partially supported on None of the versions, and not supported on below 97 Chrome for Android versions.
Base64 encoding and decoding on Firefox for Android is fully supported on 95-110, partially supported on None of the versions, and not supported on below 95 Firefox for Android versions.
Base64 encoding and decoding on Samsung Internet is fully supported on 4-20, partially supported on None of the versions, and not supported on below 4 Samsung Internet versions.

High

Browser Compatibility Score

Medium

Browser Support For IE Versions

10-11

Fully

Partially

5.5-9

No Support

Edge

High

Browser Support For Edge Versions

12-111

Fully

Partially

No Support

Firefox

High

Browser Support For Firefox Versions

2-113

Fully

Partially

No Support

Chrome

High

Browser Support For Chrome Versions

4-114

Fully

Partially

No Support

Safari

High

Browser Support For Safari Versions

3.2-16.4

Fully

Partially

No Support

Opera

High

Browser Support For Opera Versions

10.6-95

Fully

Partially

9.5-10

No Support

Safari on iOS

High

Browser Support For Safari on iOS Versions

3.2-16.4

Fully

Partially

No Support

Android Browser

High

Browser Support For Android Browser Versions

2.1-111

Fully

Partially

No Support

Opera Mobile

High

Browser Support For Opera Mobile Versions

11.5-73

Fully

Partially

No Support

Chrome for Android

High

Browser Support For Chrome for Android Versions

97-111

Fully

Partially

No Support

Firefox for Android

High

Browser Support For Firefox for Android Versions

95-110

Fully

Partially

No Support

Samsung Internet

High

Browser Support For Samsung Internet Versions

4-20

Fully

Partially

No Support

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Last Modified date

2023-03-20