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base64 save node.js

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Ángel De La Cruz answered on July 29, 2021 Popularity 8/10 Helpfulness 2/10

answer base64 save node.js

related nodejs base64

base64 save node.js

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Save base64 image in nodejs

 var crypto = require('crypto');
    var seed = crypto.randomBytes(20);
    var uniqueSHA1String = crypto.createHash('sha1').update(seed).digest('hex');
    var imageTypeRegularExpression = /\/(.*?)$/;

    var imageBuffer = this.decodeBase64Image(base64);
    var imageTypeDetected = imageBuffer.type.match(imageTypeRegularExpression);

    var data = createSlideshowDto.base64.replace(
      /^data:image\/\w+;base64,/,
      '',
    );
 
    fs.writeFile(
      `./files/base64-${uniqueSHA1String}.${imageTypeDetected[1]}}`,
      data,
      { encoding: 'base64' },
      function (err) {
        //Finished

        console.log(err);
      },
    );


decodeBase64Image(dataString: string) {
    var matches = dataString.match(/^data:([A-Za-z-+\/]+);base64,(.+)$/);
    var response: any = {};

    if (matches.length !== 3) {
      return new Error('Invalid input string');
    }

    response.type = matches[1];
    response.data = Buffer.from(matches[2], 'base64').toString('utf8');
   
    return response;
  }

Popularity 8/10 Helpfulness 2/10 Language typescript

Source: gist.github.com

Tags: base64 node.js save typescript

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Contributed on Feb 28 2023

Ángel De La Cruz

0 Answers Avg Quality 2/10

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//--------------- HOW TO DECODE BASE64 ON NODEJS ----------------------
//create a buffer of the text "Hello World"
var buffer = Buffer.from('SGVsbG8gV29ybGQ=', 'base64');
//buffer result is: <Buffer 48 65 6c 6c 6f 20 57 6f 72 6c 64>

var string64 = buffer.toString('ascii');
// .toString('ascii') allow to decode base64
// result is: "Hello World"

// Can be use combined together like these
console.log(Buffer.from('SGVsbG8gV29ybGQ=', 'base64').toString('ascii'));
// result is: "Hello World"

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: base64 ba

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Contributed on Jul 29 2021

God Of Coding

0 Answers Avg Quality 2/10

base64 save node.js

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