Node.js get image from web and encode with base64

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BufferList is obsolete, as its functionality is now in Node core. The only tricky part here is setting request not to use any encoding:

var request = require('request').defaults({ encoding: null });

request.get('http://tinypng.org/images/example-shrunk-8cadd4c7.png', function (error, response, body) {
    if (!error && response.statusCode == 200) {
        data = "data:" + response.headers["content-type"] + ";base64," + Buffer.from(body).toString('base64');
        console.log(data);
    }
});

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