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Image to base64

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5
0

python convert image to base64 

import base64

file = 'deer.jpg'
image = open(file, 'rb')
image_read = image.read()
image_64_encode = base64.encodebytes(image_read) #encodestring also works aswell as decodestring

print('This is the image in base64: ' + str(image_64_encode))

image_64_decode = base64.decodebytes(image_64_encode) 
image_result = open('deer_decode.jpg', 'wb') # create a writable image and write the decoding result
image_result.write(image_64_decode)
5
0

php image to base64 

$path = 'myfolder/myimage.png';
$type = pathinfo($path, PATHINFO_EXTENSION);
$data = file_get_contents($path);
$base64 = 'data:image/' . $type . ';base64,' . base64_encode($data);
3
0

test image as base 64 string 

//HTML Element
<img src="data:image/jpeg;base64,data:image/jpeg;base64,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">

//Base64
data:image/jpeg;base64,data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEAYABgAAD/4QAiRXhpZgAATU0AKgAAAAgAAQESAAMAAAABAAEAAAAAAAD/2wBDAAIBAQIBAQICAgICAgICAwUDAwMDAwYEBAMFBwYHBwcGBwcICQsJCAgKCAcHCg0KCgsMDAwMBwkODw0MDgsMDAz/2wBDAQICAgMDAwYDAwYMCAcIDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAz/wAARCAAyAEsDASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD9EKKKKACipLKzm1K/gtbeMy3F1KkMSAgF3ZgqrzxySBzxzXXXnwXm0+6kt7jxZ8P4LiFzHLFJrRV43U4ZWHlcEEEEdiKAONorrf8AhUf/AFOPw7/8HZ/+NUf8Kj/6nH4d/wDg7P8A8aoA5Kitrxh4Eu/BcdjLNdaVqFpqSSNbXWnXX2iCUxtsdQ2AcqxAPGMnGcggYtABRRRQAUUUUAa3w+/5KH4d/wCwtZ/+j0r1LwH4h8DaP4q8dR+KoLF719dvHjkurM3CmASt8qfK2GDbyQACcr1xx5b8Pv8Akofh3/sLWf8A6PSvX/hB8ILDxr8S/FmvakwuIdN8RXtvDaMvyPKspfe/qBvXC+oOc8CgDx3RvDVx448Wf2foNnNIbqVzbxO2TDFu4MjcgBVIy3r0ySAev+Lv7PmofDDTLfUI5v7SsNirdSqm37NL3yP+eZPRj06HsT9GeEvhzongS4vpdJsobOTUpfNmK/oq/wB1ByQowoLHAFbVzDHeQtFIqSRyAq6MAyuDwQR3BoA+RfGP/JHPh/8A9xb/ANKxXI11ni0/8WX+Hv01X/0rWuToAKKKKACiiigCbTdQm0fVLW8t2VbizmS4iLLuAdGDKSO/IHFddqXxP0PWb+a7vPAehXN3dSNNNKbmUeY7EszY7ZYk4964uigDrf8AhPPDP/RPNB/8CpaP+E88M/8ARPNB/wDAqWuSooA3vG3jr/hL7XTbWDTbPSdP0lJVtra3LNtMrh5CWY5OWAPbHPrWDRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQB//Z

//Random comment to make copy easier
1
0

buffer from base64 


const b64string = /* whatever */;
const buf = Buffer.from(b64string, 'base64');
0
0

converting image to base64 string 

router.post('/upload',function(req,res){
var base64ToBuffer = new Buffer(req.image, 'base64');//Convert to base64

//Write your insertcode of MongoDb

res.end("Image uploaded Successfully"); 
});
0
0

how img to base64 work 

/**
 * @param {Uint8Array} bytes
 * @return {string} Base64 encoded string
 */
function base64Encode(bytes) {
   let encoding = '';
   for (let group of groups24Bits(bytes)) {
      for (let value of values6Bits(group)) {
         if (value !== undefined) {
            encoding += ALPHABET[value];
         } else {
            encoding += PAD;
         }
      }
   }
   return encoding;
}

const ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
const PAD = '=';

/**
 * @param {Uint8Array} bytes
 * @return {Uint8Array} The next input group (yielded on each execution)
 */
function* groups24Bits(bytes) {
   for (let i = 0; i < bytes.length; i += 3) {
      yield bytes.slice(i, i + 3); // 3 bytes/3 octets/24 bits
   }
}

/**
 * @param {Uint8Array} group Expected to be array of 1 to 3 bytes
 * @return {number|undefined} The next 6-bit value from the 
 * input group (yielded on each execution)
 */
function* values6Bits(group) {
   const paddedGroup = Uint8Array.from([0, 0, 0]);
   paddedGroup.set(group);

   let numValues = Math.ceil((group.length * 8) / 6);
   for (let i = 0; i < numValues; i++) { let base64Value; if (i == 0) { base64Value = (paddedGroup[0] & 0b11111100) >> 2;
      } else if (i == 1) {
         base64Value = (paddedGroup[0] & 0b00000011) << 4; base64Value = base64Value | ((paddedGroup[1] & 0b11110000) >> 4);
      } else if (i == 2) {
         base64Value = (paddedGroup[1] & 0b00001111) << 2; base64Value = base64Value | ((paddedGroup[2] & 0b11000000) >> 6);
      } else if (i == 3) {
         base64Value = paddedGroup[2] & 0b00111111;
      }
      yield base64Value;
   }

   let numPaddingValues = 4 - numValues;
   for (let j = 0; j < numPaddingValues; j++) {
      yield undefined;
   }
}

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