Use this before decoding :
var decode = function(input) {
// Replace non-url compatible chars with base64 standard chars
input = input
.replace(/-/g, '+')
.replace(/_/g, '/');
// Pad out with standard base64 required padding characters
var pad = input.length % 4;
if(pad) {
if(pad === 1) {
throw new Error('InvalidLengthError: Input base64url string is the wrong length to determine padding');
}
input += new Array(5-pad).join('=');
}
return input;
}
After using this function you can use any base64 decoder
Answer from mohamad on Stack OverflowBase64.Guru
base64.guru โบ home โบ base64 standards โบ base64url
Base64URL Decode | Base64URL | Base64 Standards | Base64
Base64URL Decode is a free online tool for decoding Base64URL values to original data.
Base64 Decode
base64decode.org
Base64 Decode and Encode - Online
For example, MIME's Base64 ... but differ in the symbols chosen for the last two values; an example is the URL and filename safe "RFC 4648 / Base64URL" variant, which uses "-" and "_"....
07:08
Getting Started with Base64 Encoding and Decoding & automation ...
01:21
Quickly encode and decode Base64 text / strings - YouTube
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Base64 Encoding/Decoding explained - YouTube
23:39
URL Encode, URL Decode e Base64 no PHP: Entenda Como Funciona na ...
10:40
Demonstration of URL Encoding, Base64 and Hashing - YouTube
12:44
Use Base64 Url Encoder - YouTube
What Is the Difference Between Base64 and Base64URL?
Base64URL is a version of Base64 designed for URLs and token formats. It replaces the characters + with - and / with _, and padding characters (=) are often removed for URL safety.
This format is commonly used in JWTs, OAuth tokens, and OpenID Connect.
Want a deeper walkthrough of how Base64 works and when to use it? Read our Base64 encode & decode guide.
authgear.com
authgear.com โบ tools โบ base64-decode-encode
Base64 Decode and Encode | Authgear
What Is Base64 Encoding?
Base64 is a binary to text encoding format that represents binary data using ASCII characters.
It allows binary content to be included safely inside formats such as JSON, XML, or HTTP headers.
Example:
Authgear โ QXV0aGdlYXI=
authgear.com
authgear.com โบ tools โบ base64-decode-encode
Base64 Decode and Encode | Authgear
URL Decode
urldecoder.org โบ dec โบ base64url
URL Decoding of "base64url" - Online
Decode base64url from URL-encoded format with various advanced options. Our site has an easy to use online tool to convert your data.
Toolsaday
toolsaday.com โบ encode-decode โบ base64Url-decode
Base64Url Decode Online | Toolsaday
Decode Base64 url safe to plain text. We provide a free tool that decode base64 url to plain text.
SimplyCalc
simplycalc.com โบ base64-decode.php
(SimplyCalc) base64 / base64url decoder
Decode base64 and base64url encoded text, as per RFC-4648. Input data is assumed to be a base64 or base64url encoded UTF-8 string. See corresponding JavaScript source code.
Top answer 1 of 10
54
Use this before decoding :
var decode = function(input) {
// Replace non-url compatible chars with base64 standard chars
input = input
.replace(/-/g, '+')
.replace(/_/g, '/');
// Pad out with standard base64 required padding characters
var pad = input.length % 4;
if(pad) {
if(pad === 1) {
throw new Error('InvalidLengthError: Input base64url string is the wrong length to determine padding');
}
input += new Array(5-pad).join('=');
}
return input;
}
After using this function you can use any base64 decoder
2 of 10
8
Using the TextEncoder interface along with the btoa() function and replace + with -, and / is replaced with _. Finally, remove trailing = characters added during base64 padding. For Decoding, the process is reversed.
Encode
function base64URLencode(str) {
const utf8Arr = new TextEncoder().encode(str);
const base64Encoded = btoa(utf8Arr);
return base64Encoded.replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');
}
Decode
function base64URLdecode(str) {
const base64Encoded = str.replace(/-/g, '+').replace(/_/g, '/');
const padding = str.length % 4 === 0 ? '' : '='.repeat(4 - (str.length % 4));
const base64WithPadding = base64Encoded + padding;
return atob(base64WithPadding)
.split('')
.map(char => String.fromCharCode(char.charCodeAt(0)))
.join('');
}
Base85 Encoder
rfctools.com โบ base64url-decoder
Base64url Decoder
With this tool you can convert data encoded using the Base64url encoding scheme to its original format
Authgear
authgear.com โบ tools โบ base64-decode-encode
Base64 Decode and Encode | Authgear
Decode Base64 to text or encode text to Base64 instantly, 100% in your browser. Base64URL for JWTs, UTF-8, UTF-16, ASCII. Free, open source, nothing uploaded.
Online Tools
emn178.github.io โบ online-tools โบ base64_decode.html
Base64 Decode - Online Tools
Decode standard Base64, Base64URL, unpadded, IMAP-style, or custom-alphabet data to text or binary bytes online.
Communary
communary.net โบ 2015 โบ 04 โบ 05 โบ encodedecode-base64url
Encode/Decode Base64Url โ Communary
April 5, 2015 - These functions lets you decode and encode to and from Base64 Url.
GitHub
gist.github.com โบ tatsuyasusukida โบ ce71456081748242a0bd4cbfcfe44eb7
โพ๏ธ How to encode / decode Base64URL with Node.js [video version available]
{ original: 'ใพ', encoded: '44G-', decoded: 'ใพ' } You can also check using Base64 Guru's Base64URL Decode.
Microsoft Learn
learn.microsoft.com โบ en-us โบ dotnet โบ api โบ microsoft.aspnetcore.webutilities.webencoders.base64urldecode
WebEncoders.Base64UrlDecode Method (Microsoft.AspNetCore.WebUtilities) | Microsoft Learn
Decodes a base64url-encoded substring of a given string.
MDN Web Docs
developer.mozilla.org โบ en-US โบ docs โบ Glossary โบ Base64
Base64 - Glossary | MDN
Browsers also natively provide two JavaScript functions for decoding and encoding Base64 strings:
GitHub
github.com โบ jpfleury โบ base64url
GitHub - jpfleury/base64url: Bash encoder/decoder for the base64url format ยท GitHub
base64url can now be invoked directly from the terminal. It supports encoding, decoding, and format conversions between base64 and base64url.
Author: jpfleury
Base64.Guru
base64.guru โบ home โบ base64 standards โบ base64url
Base64URL Encode | Base64URL | Base64 Standards | Base64
Base64URL Encode is a free online ... text, uploading a file, or specifying a URL. If you want to decode Base64URL string to original data, check the Base64URL Decoder....
Oster Miller
ostermiller.org โบ calc โบ encode.html
Base64 and URL Encoding and Decoding
Encodes or decodes data in Base64 or URL encoding using client side JavaScript
GitHub
github.com โบ brianloveswords โบ base64url
GitHub - brianloveswords/base64url: For encoding and decoding base64url! ยท GitHub
Convert a base64url encoded string to a Buffer containing the decoded bytes.
Author: brianloveswords
Cryptii
cryptii.com โบ pipes โบ base64-to-hex
Base64 to hex: Encode and decode bytes online - cryptii
Base64 encoding schemes are used when binary data needs to be stored or transferred as textual data. Therefore 64 characters are chosen that are both members of a subset common to most encodings (ASCII), and also printable.
Base64Encode.org
base64encode.org โบ enc โบ base64url
Base64 Encoding of "base64url" - Online
Perform URL-safe encoding (uses Base64URL format). ENCODE ... Please wait until the encoding process is complete. ... Please note that this file is removed from our system immediately after the first download attempt or 15 minutes of inactivity. ... Need this tool again? Bookmark this page for instant access next time. Meet Base64 Decode and Encode, a simple online tool that does exactly what it says: decodes from Base64 encoding as well as encodes into it quickly and easily.