Javascript string to base64 buffer json. parse in order to avoid the manual traversal.

Jun 2, 2022 · How to decode base64-encoded json object string in node js Hot Network Questions Trouble understanding the classic approximation of a black body as a hole on a cavity Jun 14, 2024 · Base64. import base64 from 'react-native-base64'. function _base64ToArrayBuffer(base64) {. I have an app where I do a $. This tool supports loading the Base64 File to transform to JSON. Click on the URL button, Enter URL and Submit. – Jaromanda X. let obj: Buffer = Buffer. from(uint8arr. Apr 30, 2018 · I have a Buffer instance which contains utf-8 JSON. from(value). Deserialize<ExnternalAccount>(AccountInfo ); answered Jul 10, 2015 at 11:48. js Buffer. stringify(bufferOne); Aug 1, 2018 · b64. It's used to convert complex data into simpler data that uses only these basic ASCII characters. This array will contain the values derived from the JSON string using JavaScript. parse() MethodThe basic method to convert JSON String to Array of JSON object Nov 19, 2022 · To convert a string to a blob, you use the new Blob interface: const blob = new Blob([string], {. Encoding the original string to base64: The Buffer class in Node. Encode(buf, []byte("test")) fmt. into Excel file. from() method that accepts the string to be converted and the current encoding of the string. <- See Comments/Edits EDIT: Your actual question is quite difficult as even if you could access the headers, content-size doesn't show the gzip'ed value as far as I know. from(base64Val, 'base64'). As far as I can tell, it's because JSON. buffer. And that buffer was then uploaded to S3. toString('ascii')) Hello World The Buffer constructor is a global object, so no require is needed Sep 20, 2023 · Basic Example. Data truncation may occur when decoding strings that do not exclusively consist of an even number of May 15, 2021 · Buffer in Node. JS to pass along to the PostageApp API as an attachment. I took a JSON string (data) and passed it into the Buffer. const base64 = {. from(s, 'base64'), encode: b => Buffer. I'm working on Node V6. var decodedImage = new Buffer(poster64, 'base64'); // Store Poster to storage let posterFile = await client. buffer). Just return JSON. Dec 29, 2022 · I want to convert this json to base64 using Javascript/Nodejs. In your browser’s web developer console, define the string, encode it, and display the encoded string: // Define the string var decodedStringBtoA = 'Hello World!'; // Encode the String var encodedStringBtoA = btoa( decodedStringBtoA); The output of this code is a Sep 7, 2023 · In JavaScript, you can convert a buffer to a Base64 encoded string using the Buffer object (in Node. map (c => String. Click on the Upload button and select File. from is an instance of Buffer. decode: s => Buffer. And what’s more important – we can use this encoding in “data-urls”. Apr 21, 2014 · Anyone know of a good snippet of JavaScript code to convert HEX encoded strings to base64 encoded strings? Buffer. Encode and decode base64 strings. onload = function () {. The term Base64 originates from a specific MIME content transfer encoding. If we want to convert back to a Uint8Array from a string, then we'd do this: Jun 22, 2023 · In Node. parse() parses a JSON string according to the JSON grammar, then evaluates the string as if it's a JavaScript expression. The simplest way is to use the Buffer. js. Given a base64 string, what is the safest and most efficient way to create an ArrayBuffer. from('your string value', 'utf8') The second argument to Buffer. encoding - The encoding of the string. , a string in which each character in the string is treated as a byte of binary data). concat(stdOut). console. You cannot directly manipulate the contents of an ArrayBuffer; instead, you create one of the typed array objects or a DataView object which represents the buffer in a specific format, and use that to read and write the contents of the . Syntax for Encoding string to base64 value: let base64Val = Buffer. We didn't specify an encoding and used the default of utf8. The "Underlying source" on the left below is the data being generated in the mocked source, while the column on the right is log from the consumer. The problem seems to be with the new line (carriage return), just copy this json and paste it in jsonlint. Apr 27, 2014 · JSON-objects are Javascript-objects, this SO question already shows a way to calculate the rough size. Your return reader. toString(2) on each numeric byte value (something you can do without converting the Buffer to a string first). バイト列は Uint8Array であらわされ、Fetch API は Uint8Array の送受信をサポートします。. Base64 is a method of encoding data that uses 64 alphabet characters, including lowercase letters (26), uppercase letters (26), digits (10), and two more symbols. I am passing it as "base64" string through json. you will get rid of this deprecation mark. Oct 19, 2016 · This is what i have now: bufferToJson = buffer. toString(); We're just extracting the ArrayBuffer from the Uint8Array and then converting that to a proper NodeJS Buffer. Encoding API を使いたい場合、ポリフィルを導入する必要があります。. If you’ve ever handled files at all with Javascript, you’ve probably seen the Uint8Array typed array or ArrayBuffer object; either one is frequently caught handling a I understand where the confusion is coming from. May 28, 2024 · Base64 encoding and decoding can be done in Node. Nov 18, 2021 · Base64 Decode a Value in Node. base64. ajax and do a get call to an API, which returns a previously converted excel file (excel to base64); I need to re-convert this base64 data back into it's original form - i. js) or the btoa function (in web browsers). toString("base64"); – Rowland. There's a JSON encoded in that []byte that I want to use further. This encoding can be sp JSON. 5 days ago · The ArrayBuffer object is used to represent a generic raw binary data buffer. Jun 2, 2021 · javascript string to base64; javascript base64 decode; Encoding and Decoding Base64 Strings in Node. Now I do this to decode the base64 []byte array. packer. stringify() calls toJSON with one parameter, the key, which has the same semantic as the key parameter of the replacer function: if this object is a property value, the property name. from(await blob. Script. It seems like the sender of the buffer needs to call stringify or otherwise serialize the object before sending it. }); See this section of the document you linked to. How to encode base 64 string in ReactJS when btoa is deprecated? 0. Apr 15, 2024 · Let’s say you have a string, "Hello World!", and wish to encode it to Base64. Dec 2, 2014 · I am using python 3 & I have this code, trying to get base64 out of stream and returnn as json - but not working. Encoding API を使って文字列とバイト列の相互変換に取り組みました。. So Buffer. But when saving the image (which is a I'm trying to encode an image using base64 in Node. This is because there is no reliable way to synchronously convert a blob to base64, and thus the replacer function is not a viable choice here. So how to convert string back to buffer. URLEncoding. g. When encoding a Buffer to a string, this encoding will omit padding. parse() to parse the string to JSON: const buf = Buffer. buffer parameter on the resulting Uint8Array to convert the underlaying ArrayBuffer to a different view if needed. from("Hello World"). 5,525 2 30 27. stringify and JSON. assign the buffer to a variable, them use the method of the buffer to transfer to a JSON, something like this. atob(base64)) to make it work. encode('Some string to encode to base64'); edited Nov 9, 2022 at 13:40. Jun 11, 2012 · JavaScript offers the two functions btoa() and atob() for Base64 conversion, however these two functions work with single-bytes strings only (ASCII), which means that they won't work with, for example, unicode characters which (can, like UTF-8) use multiple bytes per character. I uploaded some data that was incorrectly encoded. stringify with some extra options to "pretty print" the output. The only instance where a piece of JSON text represents a different value from the same JavaScript expression is when dealing with the "__proto__" key — see Object literal syntax vs. Defaults to utf8 if not specified. It would look something like the following: let json = [ 5, false, 55, 'asdf' ]; let buffer = Buffer. – Jan 31, 2017 · 186. If you have a Blob object called blob, blob. log(deserialized Mar 19, 2017 · I was able to get the base64 string over to my Cloud Storage bucket with just one line of code. Encoding and decoding base64 using an ArrayBuffer If you're going to use ArrayBuffer and DataView for your binary data and carry binary data as base64 strings, you can use the …. readFile(attachment, function(err, data) {. key:'value', key:'value', Jul 29, 2019 · I want to convert it to a string. If you prepend the window. encodeToString(). log(Buffer. answered Nov 9, 2018 at 7:15. js, Buffer is a global object which means that you do not need to use a require statement in order to use the Buffer object in your applications. You can further refer this question for more details Multiline strings in JSON. Convert a Buffer to a string. If you wanted to, you could use JSON. js you can typically use the static Buffer. upload(posterFile, { metadata: { cacheControl: 'max-age Oct 29, 2008 · For Node. The accepted answer is. Web. readAsText(file); reader. toString('base64'); Mar 18, 2024 · JSON. Here's what worked as of January 2019: yarn add react-native-base64. toString('hex Jan 24, 2015 · For blobs it makes more sense to convert the Blobs in the object to base64 beforehand and then stringify the object. from(base64data, 'base64'). build([{ name: "mySheetName", data: data Jun 3, 2024 · Window: btoa () method. Jun 5, 2021 · The result from Buffer. But it is not giving me correct output? My JSON object: const templates = [ { "name": ";next-hover-base&quot;, } Apr 6, 2021 · and to decode it just use. length - offset - in this case, it would be SLUGID_SIZE. Here's a step-by-step guide with code examples and outputs for both methods: Method 1: Using Node. js you can use the following to encode string, Buffer, or Uint8Array to string, and decode from string, Buffer, or Uint8Array to Buffer. この実行結果は次にのようになります。. In case you’re working with a different encoding than UTF-8, you can provide it there. For example: > console. log(reader. The first SO result is this question from 2014. Here is the route on the express server: const data = [[1, 2, 3], ['a', 'b', 'c']]; var buffer = xlsx. from() method to create a buffer from a given input value: const buffer = Buffer. Serialization. result from the getBase64() function (rather than using console. It is an array of bytes, often referred to in other languages as a "byte array". result)) because i want to capture the base64 as a variable (and then send it to Google Apps Script). write() - third argument is not length, it is end offset - no, for write it is a length - see documentation - you could actually do buffer. Thanks. toString("utf-8") const obj = JSON. parse(decodedRequestBodyString. The following example creates a text file on-the-fly and uses the POST method to send the "file" to the server. cmd and only get undefine. Now run the command: Jun 28, 2024 · The send method of the XMLHttpRequest has been extended to enable easy transmission of binary data by accepting an ArrayBuffer, Blob, or File object. apply (null, buffer) buffer. Read a file to a Buffer. from([0x1, 0x2 Aug 6, 2011 · You then of course use the . from method. So far tried below mentioned things: . const requestBodyObject = JSON. – Mar 7, 2019 · 15. Then you can turn it back to a string with toString() and use JSON. I have presented the code in a simplified form, leaving what is relevant to the question. parse(window. ) but still use StringBuilder to dynamically generate the code, you can create a class that extends the StringBuilder class so that you can use the append feature, but implement get/is methods to allow Nov 13, 2017 · Neither the accepted answer nor the Buffer methods worked for me. parse can understand. answered Dec 12, 2018 at 11:59. Specifically a typeless array buffer in pure modern JavaScript. Nov 3, 2022 · 0. Rix. This example uses plain text, but you can imagine the data being a binary file instead. In this case, the "data" attribute contains the JSON string which you need to parse. Pass it your base64-encoded string as the first argument and the base64 encoding as the second argument. To transform that buffer instance into a string that can be used in JSON. toString()); Sep 18, 2021 · JavaScript で Buffer と他の型への変換する方法をまとめました。 // string → Buffer const strBuf = Buffer. log(bufferOne); // Output: <Buffer 54 68 69 73 20 69 73 20 61 20 62 75 66 66 65 72 20 65 78 61 6d 70 6c 65 2e>. append() to interpret your Buffer as a "file" by passing an options object as the third argument. I just want the buffer. parse(str) To make the Buffer->Object conversion more performant how would I convert it without an intermediate string? Aug 30, 2017 · 226 1 6. let url = 'something'. To understand it better, press F12 to open "Inspect Element" in your browser and go to the console to write the following commands: JSON. - Selection from JavaScript Buffers can be used for taking a string or piece of data and doing Base64 encoding of the result. parse() on the string. js can be used to convert a string to a series of bytes. JavaScript encodes strings as UTF-16, just like C#'s UnicodeEncoding, so creating a byte array is relatively straightforward. createObjectURL is to convert a Blob into a base64-encoded string. It is supported in modern browsers and can be used to encode strings as follows: Aug 19, 2021 · btoa and atob are only deprecated for Node. parse the code needs to invoke Buffer. Optionally, the object can also include a contentType string and knownLength integer. join ('') etc. js, you can use the built-in Buffer object to convert a buffer to a Base64 encoded Jan 24, 2020 · I'm using a simple Node. I didn't found a solution right now to convert it to a readable string and the other direction seems to be the same problem. Println(buf) The above prints: both of which are rather different from node's output. smali. Base64 to JSON Online works well on Windows, MAC, Linux, Chrome, Firefox, Edge, and Safari. Just make sure that the characters in the string adhere to the encoding schema, for example, if you use characters outside the UTF-8 range in the example they will be encoded to two bytes instead of one. The btoa() method of the Window interface creates a Base64 -encoded ASCII string from a binary string (i. Btw I have no access to data since when I try to access data it throws undefined so I pass the complete object which in this case is buffer to Sep 19, 2023 · Note: This fetch operation is mocked for the purpose of demonstration, and just returns a ReadableStream that generates random chunks of text. You will need to use a callback to access the result. from("asdf"); // this is a string you can store in a JSON object somewhere const serialized = x. Jul 10, 2015 · As expected, you will get {\"Name\":\"XYZ\"} in your AccountInfo string. from(b). Now you need to Deserialize. if it is in an array, the index in the array, as a string. you may do something like: ExnternalAccount model = new System. But more likely, it doesn't matter at all - as long as the base64 encoded string decodes to valid JSON, I doubt S3 cares if it has Dec 17, 2019 · Joel, conversion from byte array to a string, the procedure String. So far everything works fine. modify some values, etc. from('This is a buffer example. json. stringify(json)); May 7, 2015 · Its counterpart atob(), on the other hand, will take a Base64 formatted string and return a binary string without any regard to whether the contents represent a Latin1 string, a UTF-8 string, a UTF-16 string, or arbitrary binary data. Mar 29, 2016 · I tried to use return reader. This tool decodes JSON data encoded in base64 format back into parsable and valid JSON. you can use the same model, ExternalAccount. toJSON() answered Nov 3, 2022 at 20:46. from('{"a":1}') const str = buffer. toString('base64'), because new Buffer is deprecated. parse(fs. . stream = BytesIO() img. The interface on the server-side is a node-red-server: The data is received and the file names and the text are extracted. js; base64 in js; js base64 encode; javascript base2 to base64; save byte as json string javascript; JavaScriptSerializer() and convert to base64; convert base64 into jpeg js; Decodes a string of data which has been encoded using base-64 encoding Jun 3, 2023 · Encoding Base64 in JavaScript Using the btoa() Function. fromCharCode (c)). result is doing nothing. 9. Dec 12, 2018 · 1. Nov 25, 2016 · Here I am calling a GetFile , getting response as ArrayBuffer{} object, In network Tab response is {"errors":["photoProof Image is not available in the system\ Feb 1, 2018 · Yes, I see - so, request and got get the same result as each other, so, they both get it "wrong" in the exact same way - converting the first 80 or so characters from base64 to binary should help you see where they are going wrong May 26, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Encoding binary data as a base64 string using Node. toString('utf-8'); But I don't want string version of it. The provided object has a property which contains a JSON string. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by transforming it into a radix-64 representation. Dec 27, 2015 · Binary here means individual bytes. from(JSON. Something like if Nov 16, 2017 · I've seen SO questions similar to my use case w/ angular and other server side platforms but not for pure javascript. from(url) let obj2 = obj. stringify() was directly called on this object, an empty string. toString("base64"); console. If you have binary data that you need to encode to pass to the client as JSON, you can convert it to base64, a common means on the Internet to represent eight-bit values in solely printable characters. write(slugId2, SLUGID_SIZE, 'base64'); - because the length defaults to buffer. com you will get to know. if JSON. JavaScriptSerializer(). fromCharCode. new String (buffer) String. parse(response); //converts passed string to JSON Object. When creating a Buffer from a string, this encoding will also correctly accept regular base64-encoded strings. js provides the Buffer object and a base64 encoder and decoder for this task. js using the Buffer object. When I downloaded the JSON files I was expecting a JSON string and instead got stuff that looked like this: NOTE: In Postman I had to remove "window" from JSON. May 25, 2016 · I am using a library which on call of a function returns the toString of a buffer. original = user1:password-goes-here! decoded = user1:password-goes-here! ちゃんと、エンコードした文字列から元の文字列に戻ったことが確認できました Apr 16, 2024 · Base64 encoding and decoding can be done in Node. jpeg`, { path: 'submissions/dev/', isBuffer: true, raw: true }); let posterUpload = await client. JavaScript's charCodeAt() returns a 16-bit code unit (aka a 2-byte integer between 0 and 65535). from(data, "base64"). If you need to print the Buffer in a readable format, call the toString() method. save(stream,format='png') return Nov 17, 2023 · To convert a binary string into an image, I use the Buffer. So you could deconstruct and reconstruct it as follows: Jan 8, 2019 · For NodeJS (with node-fetch), you can get a buffer from blob using Buffer. result);//outputs random looking characters for the image. atob Apr 5, 2024 · a string - A string to encode. parse() converts any JSON string passed into the function into a JSON object. js の場合、Buffer を使います。. It seems like I get from the old C++ clients an utf16 buffer. This string is set as attribute in an JSON-object which is send to the server. '); console. The btoa() function is a built-in JavaScript function that takes a binary string as an argument and returns its Base64-encoded equivalent. toString('base64'); Syntax for Decoding base64 value to string object: let decodedVal = Buffer. You can split it into distinct bytes using the following: function strToUtf16Bytes(str) {. var binary_string = window. Make sure to pass the correct encoding to initialize the buffer Jul 12, 2023 · The easiest way to encode Base64 strings in Node. log(serialized); // YXNkZg== // you can get the serialized base64 from a JSON object const deserialized = Buffer. file(decodedImage, `poster_${path}. I thought I had it working but it attaches a 1K file that isn't exactly what I was looking for. then((blob) => { // saveAs from FileSaver will download the file saveAs(blob); }); A buffer's first argument must be a: String, Buffer, ArrayBuffer, Array, or array-like object. from("SGVsbG8gV29ybGQ=", 'base64'). Buffer. toString(); bufferToJson = JSON. from() method creates a new Buffer that contains the string. Apr 3, 2020 · for sending docx file to browser use toBlob() method instead of using toBase64String() method and again converting to buffer. return Buffer. var reader = new FileReader(); reader. toJSON method is simply translating the buffer into something that JSON. The options object should have a key called filename containing a string with the name of the file. Here's my code: var base64data; fs. 1 1. toString('base64') }; edited Jan 14 at 17:31. Taking that information into account, we could implement what you are looking for by creating a buffer from a String. When you find the buffer property, you'll take the value and manually create and return your Buffer. Internally Buffer is an immutable array of integers that is also capable of performing many different encodings Jan 16, 2018 · I need to send image data (read as array buffer) from client page, along with additional string/json information generated by page, to NodeJS server in one request. function getBase64(file, cb) {. toBlob(doc). stringify(bufferToJson) bufferToJson = JSON. let json = JSON. from(data, 'base64') construction in Node JS, it works perfectly. That encoding represents binary data as a string of ultra-safe “readable” characters with ASCII-codes from 0 to 64. An example of what buffer can be is {cmd:'echo'} I have tried bufferToJson. javascript. stringify(json); const objJsonB64 = new Buffer(objJsonStr). Dec 28, 2016 · FileReader is async function. Utilizando Base64 no navegador (Internet Explorer 10 e acima): O código abaixo pode ser copiado e colado dentro do Console do Chrome, para vê-lo executando. apply results in RangeError: Maximum call stack size exceeded, so in my case, that's not an option. base64data = new Buffer(data). JSON. Jun 9, 2017 · Is better you use Buffer. e. js to pull information from a valid jsonfile (checked with JSLint), but the code i'm using doesn't return the expected value: squadJSON = JSON. Then we convert the Buffer to a string (you can throw in a hex or base64 encoding if you want). In Node. toString('base64')); SGVsbG8gV29ybGQ= > console. 1. This is example of converting String to a Buffer and back to String: let bufferOne = Buffer. from expected a Base64 string but received a UTF-8 string. Are you concerned about the entire JSON returned or the data property? Since the returned object is in JSON format, you can stringify and convert to base64 encoded. readFileSync Mar 13, 2018 · From 0 to 255 in 1ms. You can use this method to encode data which may otherwise cause communication problems, transmit it, then use the Window. log( emBase64) // Saída: "RGV2UGxlbm8=" // Voltando para string var The best way to serialize a buffer in plaintext is probably to convert it to base64: const buf = Buffer. The exact code is . js is via the Buffer object. This encoding can be sp Apr 5, 2020 · Where I need to convert the array buffer in this code to be converted to base64, and in order to test if the base64 is indeed correct I need to convert the base64 back to arrayBuffer and then feed that into the sourceBuffer for display. I have a JSON object and I'm converting it to a Buffer and doing some process here. var obj = {. You can, however, tell form. from (base64 ↔ Buffer ↔ May 16, 2022 · An alternative to URL. Later I want to convert the same buffer data to convert to valid JSON object. There are two approaches to solve this problem, which are discussed below: Approach 1: Using JSON. – fartwhif Commented Aug 23, 2021 at 22:36 O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers. setEnvironmentVariable("userId", parseJwt(jsonData. marksyzm. Sep 6, 2017 · This byte array is converted to a string using Base64. Look at the following example. Mar 13, 2016 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Jan 20, 2012 · let str = Buffer. // Uma string qualquer var string = 'DevPleno' // Convertendo para Base64 var emBase64 = btoa( string) console. Decoding a base64-encoded string is also possible using the global Buffer class. length; Mar 21, 2015 · So, to solve your problem, if you really want that higher level of control and want to do some manipulation (e. On the other hand, if you are trying to use btoa or atob in the back-end side, you definitely should use Buffer interface. This can be done using the Buffer. Below is the code I tried but I'm getting [object object] when I convert back to JSON and cannot open this object. This module provides a replacer which encodes Buffer data as a base64-encoded string, and a reviver which turns JSON objects which contain buffer-like data (either as arrays of numbers or strings) into Buffer instances. When passing a Buffer it does not. Just do this and it will solve the issue. parse(atob(base64)); and then postman. Usually you convert it this way: const buffer = Buffer. from(input, encoding) is the encoding of your input value. 'hex': Encode each byte as two hexadecimal characters. This tool allows loading the Base64 URL converting to JSON. stringify removes whitespace while Amazon's method is preserving it. Sep 5, 2008 · JSON. js can be used for encoding string into base64 value and also to decode into string. As per the doc at this location. You can just get a buffer directly from the response. A data url has the form data:[<mediatype>][;base64],<data buffer を利用して Base64 のエンコードおよびデコードを行う例は次の通りです。. This is by design. I suspect the difference is that node is storing the string as bytes from a base64 string, while go is storing the string as bytes from an ascii/utf8 string represented as base64. I need to decode and download a file on the client side. toString('ascii'); Example of Encoding to Nov 4, 2016 · im working on a javascript/nodejs application that needs to talk with a C++ tcp/udp socket. Nov 13, 2021 · 2. type will give its content type. toString () . const objJsonStr = JSON. The Buffer. Again, create a buffer instance using the Buffer. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. arrayBuffer());. Check if a file exists. parse(bufferToJson) buffer is where the data is. access_token)); "access_token" is in my case the key of token's value in response (may differ in your case). When the term "Base64" is used on its own to refer to a specific algorithm, it typically refers to Jun 12, 2024 · Description. Mar 8, 2019 · The problem you need to figure out is why is a buffer with that string being sent. Aug 26, 2020 · I have a map of type map[string][]byte, now the value of []byte is base64 encoded. from(base64String, 'base64'). Now I'm trying to pass a similar string to the browser using this &lt;im Jun 11, 2024 · Given a JSON string, the task is to convert it into an array of JSON objects in JavaScript. Davi Sonda Sonego. If you want binary representation of individual bytes, you will need to call . then. Read a JSON file. Aug 5, 2017 · 1. You can pass a "reviver" function to JSON. toString first to make it work. toString() method to convert the Buffer to a string, and then use JSON. parse accept arguments called replacer and reviver respectively which allow customizing the parsing/encoding behavior. type: 'image/jpeg' // or whatever your Content-Type is. atob(base64); var len = binary_string. I need both parts to be processed in one request as further image processing by server depends on that string/json sent along. from('Your String'). Node. parse in order to avoid the manual traversal. from(serialized, "base64"); console. toString('ascii') As far as it goes to your code, its not wrong base64 conversion is right, may be there can be issue in your temporary_user_id, because of that you are getting some awkward text but conversion is done right afaik. However, you don't need to get a blob from node-fetch. pj qu tf sr ho hu mb nb tc vx