Hướng dẫn base64 to csv javascript

• I am simply trying to convert a base-64 string to csv. The file is in CSV format transmitted in base-64 string.
• I am implementing this in Microsoft Office Excel Addins
• Code base-64-string

// getting the base-64 string
  let base_64_string = [base-64-string];

  // decode the base-64 string 
  let csvContent = atob(base_64_string);

  // convert the decoded base-64 string to csv
  var blob = new Blob([csvContent], {type: "data:application/octet-stream;base64"});

• Error

Compiled with problems:

WARNING in ./src/taskpane/taskpane.js 310:17-21

export 'Blob' (imported as 'Blob') was not found in 'buffer' (possible exports: Buffer, INSPECT_MAX_BYTES, SlowBuffer, kMaxLength)

• Another method here

Nội dung chính

• How to use Base64 to CSV Conversion Tool
• BASE64 Format
• How to convert Base64 to CSV?
• How do I convert Base64 to excel?
• How do I get files from Base64?
• What is Base64 encoding used for?

asked Aug 13 at 6:30

Lav SharmaLav Sharma

2644 silver badges16 bronze badges

The code you've posted is not the problem (as demonstrated by the code snippet below).

// generate a base-64 encoded csv string
const base_64_string = btoa("a,b,c");

// decode the base-64 string 
const csvContent = atob(base_64_string);

// convert the decoded base-64 string to csv
const blob = new Blob([csvContent], {type: "data:application/octet-stream;base64"});

console.log(blob);

answered Aug 13 at 7:59

Rocky SimsRocky Sims

3,1821 gold badge13 silver badges18 bronze badges

1

Use this Base64 to CSV converter tool by pasting or uploading Base64 in the left box below. Results will appear in the box on the right. Decode your Base64 data into CSV (comma-separated-values) format.

Input (Base64) - Paste your Base64 here Converted.

Output (CSV) - The converted CSV Converted.

Want to convert CSV to Base64 instead? Use the CSV to Base64 Converter Tool.

1. Paste your Base64 input into the left input box and it will automatically convert it into CSV.
2. The CSV output is the box to the right.
3. If there are any errors in the Base64 and the converter isn't able to do the conversion, the error message will appear in the output box letting you know where the error was found in the Base64.
4. Use the control box to select options that will affect the conversion.
5. Your Base64 data is secure. ConvertSimple's converter does not send your Base64 data to our servers for conversion, the process is done completely in your web browser. That's what makes ConvertSimple's converter the safest and fastest converter out there.

BASE64 Format

CSV Format

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Pro tips Master online csv tools

You can pass input to this tool via

query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!

https://onlinecsvtools.com/convert-base64-to-csv

=Zm9vLGJhcixiYXoKYWFhLGJiYixjY2MKZGRkLGVlZSxmZmYKMDAwLDExMSwwMDA%3D

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How to convert Base64 to CSV?

Input (Base64) - Paste your Base64 here. Upload Download Copy to Clipboard Conversion is Automatic. Output (CSV) - The converted CSV..

Paste your Base64 input into the left input box and it will automatically convert it into CSV..

The CSV output is the box to the right..

How do I convert Base64 to excel?

How to convert Base64 to Excel.

Open free Base64 website and choose Convert application..

Click inside the file drop area to upload Base64 files or drag & drop Base64 files..

You can upload maximum 10 files for the operation..

Click on Convert button..

How do I get files from Base64?

How to convert Base64 to file. Paste your string in the “Base64” field. Press the “Decode Base64 to File” button. Click on the filename link to download the file.

What is Base64 encoding used for?

Base64 encoding schemes are commonly used when there is a need to encode binary data that needs to be stored and transferred over media that are designed to deal with ASCII. This is to ensure that the data remain intact without modification during transport.