Correctly encode image/jpg response binary to base64 data URI in Node












0















As part of a Node script I am fetching an image from an API (specifically, profile images from Microsoft Graph).



The response returned is of type 'image/jpeg' and the response body contains a string, that I assume to be binary, which looks something like this:



����u0000u0010JFIFu0000{snipped}ko{j챂�]Z�,3D�GG;��0u0010���?���


So from other stack overflow answers and online resources I am using the following code to convert it to a base64 data URI that I can ultimately embed in a web page when my node server returns its response:



const base64 = 'data:' + response.headers['content-type'] + ';base64,' +
new Buffer.from(response.body, 'binary').toString('base64');


This returns an encoded string, but visiting the URI / trying to download the image just shows a blue question mark, or downloads a corrupted image.



But I can't fathom which step in this process is wrong?










share|improve this question



























    0















    As part of a Node script I am fetching an image from an API (specifically, profile images from Microsoft Graph).



    The response returned is of type 'image/jpeg' and the response body contains a string, that I assume to be binary, which looks something like this:



    ����u0000u0010JFIFu0000{snipped}ko{j챂�]Z�,3D�GG;��0u0010���?���


    So from other stack overflow answers and online resources I am using the following code to convert it to a base64 data URI that I can ultimately embed in a web page when my node server returns its response:



    const base64 = 'data:' + response.headers['content-type'] + ';base64,' +
    new Buffer.from(response.body, 'binary').toString('base64');


    This returns an encoded string, but visiting the URI / trying to download the image just shows a blue question mark, or downloads a corrupted image.



    But I can't fathom which step in this process is wrong?










    share|improve this question

























      0












      0








      0


      1






      As part of a Node script I am fetching an image from an API (specifically, profile images from Microsoft Graph).



      The response returned is of type 'image/jpeg' and the response body contains a string, that I assume to be binary, which looks something like this:



      ����u0000u0010JFIFu0000{snipped}ko{j챂�]Z�,3D�GG;��0u0010���?���


      So from other stack overflow answers and online resources I am using the following code to convert it to a base64 data URI that I can ultimately embed in a web page when my node server returns its response:



      const base64 = 'data:' + response.headers['content-type'] + ';base64,' +
      new Buffer.from(response.body, 'binary').toString('base64');


      This returns an encoded string, but visiting the URI / trying to download the image just shows a blue question mark, or downloads a corrupted image.



      But I can't fathom which step in this process is wrong?










      share|improve this question














      As part of a Node script I am fetching an image from an API (specifically, profile images from Microsoft Graph).



      The response returned is of type 'image/jpeg' and the response body contains a string, that I assume to be binary, which looks something like this:



      ����u0000u0010JFIFu0000{snipped}ko{j챂�]Z�,3D�GG;��0u0010���?���


      So from other stack overflow answers and online resources I am using the following code to convert it to a base64 data URI that I can ultimately embed in a web page when my node server returns its response:



      const base64 = 'data:' + response.headers['content-type'] + ';base64,' +
      new Buffer.from(response.body, 'binary').toString('base64');


      This returns an encoded string, but visiting the URI / trying to download the image just shows a blue question mark, or downloads a corrupted image.



      But I can't fathom which step in this process is wrong?







      javascript node.js base64 content-type binary-data






      share|improve this question













      share|improve this question











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      share|improve this question










      asked Nov 21 '18 at 17:01









      transiti0narytransiti0nary

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