Any Javascript Obfuscator?

[hsriat]

Is there any free Javascript Obsfucator available?

Actually I just want the obsfucator to do two things...
1. Remove Comments
2. Rename Functions and Variables

[hsriat]

So, did you manage to cut it down in size?

I didn't do it yet...
Will do after testing.

Will tell you how much file size reduces...

[rnd me]

remember that in javascript, variable names are case-sensitive, so performing global replaces on compressed code could be an easy way to obfuscate names.

if you have a funciton or prototype for doing mulitple replaces, you could feed it a an array of function names, and have it substitute a serial number for each.



continuing above,

 
String.prototype.substitute = function (r) {
    O = this;
    for (z = 0; z < r.length; z++) {
        tre = new RegExp(r[z][0], "gm");
        O = O.replace(tre, r[z][1]);
    }
    return O;
}
 
 
function serial(dig) {
    var bb = "";
  if(!dig){ dig=5; } 
    for (var q = 0; q < dig; q = q + 1) {
        bb = bb + String.fromCharCode(Math.round(Math.random() * 25 + 65));
    }
    return bb;
}
 
var subs=[
  ["el2",serial()],
  [ "tags", serial()]
   ] //end sub array
alert(BS.toSource().substitute(subs) )
 
 

[hsriat]

So, did you manage to cut it down in size?

Yeah, quite a lot.

A 32kb well commented JS was reduced to 19 kb.
And a 15 kb, non-commented JS reduced to 14 kb (not too much tho :p)

[acoder]

Yeah, quite a lot.

A 32kb well commented JS was reduced to 19 kb.
And a 15 kb, non-commented JS reduced to 14 kb (not too much tho :p)

Every little helps, eh?

If you're using long names for variables, functions, etc. you may want to replace those too.

[hsriat]

Every little helps, eh?

If you're using long names for variables, functions, etc. you may want to replace those too.

Yeah, I wanted to, but the thing you referred to didn't do that :p

And I don't want to do the find replace thing. B'coz with that, when I would do any change, after doing that with the original (commented) file, I would need to do the whole find-replace thing again.

So I wanted a one-click-solution, so that after making any change, I can get the minified* version quickly and upload it to server again.

* term used by that guy who made that program.

[acoder]

Yeah, I wanted to, but the thing you referred to didn't do that :p

And I don't want to do the find replace thing. B'coz with that, when I would do any change, after doing that with the original (commented) file, I would need to do the whole find-replace thing again.

So I wanted a one-click-solution, so that after making any change, I can get the minified* version quickly and upload it to server again.

* term used by that guy who made that program.

Try YUI Compressor, Packer or ShrinkSafe (Dojo).