Multi JavaScript minimizer and formatter

• Choice of 4 ways to minimize
• Detailed error information (babel engine)
• Supports file size up to 70000 bytes
• No need to manually copy&paste
• Applies js-beautify

Since it is your JavaScript you are responsible for correct function of the minimized code too. In few cases minimized code may behave unexpected.

Step 1 Select the minimizing engine.

• The babel engine can minimize and rewrite modern class-based JavaScript, shows detailed error messages, converts non-ASCII characters into unicode escapes. The minimized code usually runs on most current browsers. Tested with:

  Chrome   (mobile) version 58  Android 5.0.1
  Chrome   version 59           Linux
  Chrome   version 59           Windows 10
  Firefox  (mobile) version 53  Android 5.0.1
  Firefox  version 53           Linux
  Firefox  version 53           Windows 10
  Internet Explorer version 11  Windows 10
  MS edge  version 40           Windows 10
  Opera    version 45           Linux
  Opera    version 45           Windows 10
  Safari   (mobile) version 6.0 iPad 3/6.1
  Safari   version 6.2          Mac OSX 10.8

  The babel engine should be used for minimizing JavaScript to be used with the coockieQuestion framework.
• The uglify engine shows error details.
• The yui engine (by yahoo) keeps non-ASCII characters and does not rewrite some code.
• The yui (no names changes) option allows to minimize whithout renaming JavaScript identifiers.

Step 2 Select input by (optional) choosing the encoding and a JavaScript (.js) file. Charset selection is only needed if the file contains non-ASCII characters (UTF8 is a superset of ASCII). Windows users may find the default charset by opening the PowerShell, input [System.Text.Encoding]::Default and look for the value of WebName. Alternatively encode non-ASCII characters like e.g. \u20AC for the euro sign. JavaScript can also be pasted manually from clipboard (click into text area, then [Ctrl]+[V]).

Step 3 Start the minimizer. Please allow some seconds of delay. The result will appear in the text area below.

Step 4 Copy the content of the text area into clipboard for your use. This can be also done manually by clicking into the text area, then press [Ctrl]+[A], then [Ctrl]+[C].

Step 5 Addendum: Using the apache webserver the following code, in a .htaccess file, is one way to automatically serve [scriptfile].min.js if available and falls back to serve [scriptfile].js if not (tested with apache 2.4):

<IfModule mod_rewrite.c>
    RewriteEngine on
    Options +FollowSymLinks
    RewriteCond %{REQUEST_FILENAME} "^(.*)(\.js)$"
    RewriteCond %{REQUEST_URI} "!^(.*)(\.min\.js)$"
    RewriteCond %1.min.js -f
    RewriteRule "^(.*)(\.js)$" "$1.min.js"
</IfModule>

Format JavaScript code in the text area will be formatted ("beautify") and may then be optionally be copied into clipboard (Step 4). Please allow some seconds of delay.

CSS Style Sheet minimizer
HTML minimizer
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