Question

27

Rendering a Base64 PNG with Express

rated 0 times [ 32] [ 5] / answers: 1 / hits: 57315 / 9 Years ago, tue, february 10, 2015, 12:00:00

My Node.js server has something that looks like the following:

app.get(/api/id/:w, function(req, res) {

    var data = getIcon(req.params.w);

});

Here, data is a string containing a Base64 representation of a PNG image. Is there any way I can send this to a client accessing the route encoded and displayed as an image (e.g. so the URL can be used in an img tag)?

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cherish

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4 Years ago

answered 9 Years ago turnerf · Accepted Answer

Yes you can encode your base64 string and return it to the client as an image:

server.get(/api/id/:w, function(req, res) {

    var data = getIcon(req.params.w);

    var img = Buffer.from(data, 'base64');



   res.writeHead(200, {

     'Content-Type': 'image/png',

     'Content-Length': img.length

   });

   res.end(img); 

});