1/16/2024 0 Comments Base64 decode nodeOther variations share this property but differ in the symbols chosen for the last two values an example is UTF-7. For example, MIME's Base64 implementation uses A– Z, a– z, and 0– 9 for the first 62 values. This combination leaves the data unlikely to be modified in transit through information systems, such as email, that were traditionally not 8-bit clean. The general strategy is to choose 64 characters that are common to most encodings and that are also printable. So, this is it for this tutorial, I hope you guys like the tutorial feel free to drop any comments in the comment section down below.The particular set of 64 characters chosen to represent the 64-digit values for the base varies between implementations. I mostly prefer method 2 which is highly used and it is supported by Node as their default package that means you do not have to install an extra library as we have done in the 3rd method and you can use their inbuilt Buffer method to achieve your results. So, these are the ways through which you can convert a string to Base64 format and vice versa. Let decoded = base64decode(encoded) // "hey there" Let encoded = base64encode('hey there') // "aGV5ICB0aGVyZQ=" The sample Format of code will be like this: const = require('nodejs-base64') You just have to install the npm package to your project and call the encode and decode function to get results instead of getting stuck with the Buffer code and all. If you do not want to go by any of the above methods, then you can choose to use the NPM package which itself does this encoding and decoding stuff for you. So, to do that part, I am using the toString() method which accepts formats like utf-8, ASCII, and others that can be used also. You might be wondering why I am using toString() in the decode method because you did not call toString() then it will return something like this which is in Buffer form and that needs to be converted back to its original form. const data = 'CodezUp' Ĭonst encode = om(data).toString('base64')Ĭonst decode = om(encode, 'base64').toString('utf-8') To decode the Base64 string, use the Buffer from(string, ‘base64’) function to decode the Base64 string. To encode the string in Base64, use the Buffer toString(‘base64’) function to encode the string. This Buffer not only supports Base64 format but also other formats like utf-8, ASCII, base64, hex, utf-16, and many more. You can directly call this Buffer() function and pass data to it. This Buffer Object is a global object, so there is no need to install or import any packages to access this object. So, Node.js itself provides us with one global object named Buffer which can be used to encode and decode strings to Base64 format. Using Buffer ObjectĪs in the first part, we talk about methods like atob and btoa but we can’t use them in our Node.js project. So due to that, we can’t use it in our Node.js project but can be used with plain javascript. Encode Stringīut there is one limitation that this only works on browser consoles and they are part of the global window objects and outside they are not accessible. You can verify these functions right now in your console tab in the browser window. This btoa() method simply encodes or creates the Base64 ASCII string from the given file or object.Īnd this atob() method decodes the above Base64 string and returns the original output. These methods atob() and btoa() are used to convert to string and base64 format respectively. I am not going into depth about how the base64 works inside but we will discuss methods through which we can convert string to base64. Simply, encoding is the way through which we convert data like binary into ASCII format and decoding is vice versa that means it converts that ASCII format back to the original content.īut one thing to note is that many users got confused with this encoding because of its data generated and think like it is an encryption-decryption and compression algorithm but it is not, this is just the simple conversion from binary data to ASCII format.Īnd the other thing to note in this is while encoding it produces the string which is approximately 1.33 times the size of the original file. We already have written one post regarding the same encode and decode in Base64 in Java. Hi, in this tutorial, we are going to talk about 3 different ways through which we can do Base64 String encode and decode in Javascript and Node.js.
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