node.js - express.js / serve generated image -

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node.js - express.js / serve generated image -

i using express , serve generated image. html source <img src="/generated/image"> , route setup when get /generated/image called, png gets created (and put, example, in public directory, guess not strictly necessary). i'd send image user. should utilize res.send() purpose? how can info user?

depending on library you're using create image, should able res.end(image, 'binary'); create sure include right content-type header.

if don't want generate file every time can write file disk, store in key/value store, relational database, etc... , check/serve if has been created before going through creation routines.

node.js express

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