I have a PHP script that can encode a PNG image to a Base64 string.  I'd like to do the same thing using JavaScript. I know how to open files, but I'm not sure how to do the encoding. I'm not used to working with binary data....
I have base64-encoded binary data in a string.  const contentType = 'image/png'; const b64Data = 'iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==';   I would like...
Are there any methods in JavaScript that could be used to encode and decode a string using base64 encoding?...
I'm trying to use a combination of Ajax and data URIs to load a JPEG image and extract its EXIF data with a single HTTP request. I am modifying a library (https://github.com/kennydude/photosphere) to do this; currently this library uses two HTT...
My client is offering the user to pick a picture, crop and resize it and then display it (in a <img> DOM element). If the picture is fine, the user can upload it to the server so it can be saved.  I would like to do the upload thanks to an Aj...
I got a webSocket comunication, I recieve base64 encoded string, convert it to uint8 and work on it, but now I need to send back, I got the uint8 array, and need to convert it to base64 string, so I can send it. How can I make this convertion?...
I'm trying to upload a base64 image to a FaceBook page using Node.js. I have managed to get the upload working with all the multipart data etc should I read the file from the filesystem (ie. using fs.readFileSync('c:\a.jpg')  However, s...
I'm using a plugin that returns a PNG encoded base64 string, I cannot change it, I must work with it, but what I really need is the tiff encoded value (base-64). Is there a way of doing this?  I tried to create a canvas, load the png base64 and t...
I'm using node-imap and I can't find a straightforward code example of how to save attachments from emails fetched using node-imap to disk using fs.  I've read the documentation a couple of times. It appears to me I should do another fetc...
I am develop t-shirt constructor. When I send base64 data (canvas.toDataUrl()) via ajax POST method to server, I get base64 string with spaces.  For exmaple:  Send:   data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAhsAAAIbCAYAAABCJ1y9AAAgAElEQVR4Xuy9C...

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