>How much does these uglifiers slow down the code for a the client? I thought minification is good for the client. Smaller payload, easier for browser to parse

>How much does these uglifiers slow down the code for a the client? I thought minification is good for the client. Smaller payload, easier for browser to parse the code because it doesn't have any unnecessary white space, comments and characters. Also not the best solution to security, but does obscure the code to make it harder for malicious client to read through the code.