Online Base64 Encoder

I am building an open search add-on for Firefox/IE and the image needs to be Base64 Encoded so how can I base 64 encode the favicon I have?

I am only familiar with PHP

I was implementing password hashing with salt, so I generated salt as binary, hashed the password, base64 encoded the password and salt then stored them into database.

Now when I am checking password, I am supposed to decode the salt back into binary data, use it to hash the supplied password, base64 encode the result and check if the result matches the one in database.

The problem is, I cannot find a method to decode the salt back into binary data. I encoded them using the Buffer.toString method but there doesn't seem to be reverse function.

I'm trying to fetch an image from the web and encode it with base64.

what i have so far is basically:

var request = require('request');var BufferList = require('bufferlist').BufferList;bl = new BufferList(),request({uri:'http://tinypng.org/images/example-shrunk-8cadd4c7.png',responseBodyStream: bl}, function (error, response, body) {    if (!error && response.statusCode == 200)     {        var type = response.headers["content-type"];        var prefix = "data:" + type + ";base64,";        var base64 = new Buffer(bl.toString(), 'binary').toString('base64');        var data = prefix + base64;        console.log(data);    }});

This seems to be pretty close to the solution but i can't quite get it to work. It recognizes the data type and gives out the output:

data:image/png;base64

however the bufferlist 'bl' seems to be empty.

Thanks in advance!

I want to generate Base64 string for a specific image.for that I've wrote below code

let imageData = UIImagePNGRepresentation(imgProfile.image!)!var imageStr = imageData.base64EncodedString(options: Data.Base64EncodingOptions.lineLength64Characters)

and I'm getting this output string as Base64 which is not decoded (i.e. wrong).

but when I'm generating Base64 from here, I'm getting this output string, which is successfully decoded and getting the image back (i.e. correct)

Please help me to find the issue.
Thanks in advance

I've already visited following threads.
1. https://stackoverflow.com/a/47610733/3110026
2. https://stackoverflow.com/a/46309421/3110026

I know what base64 encoding is and how to calculate base64 encoding in C#, however I have seen several times that when I convert a string into base64, there is an = at the end.

A few questions came up:

1. Does a base64 string always end with =?
2. Why does an = get appended at the end?