Javascript Obfuscator

Javascript Obfuscator, Compressor
and Minifier

Scramble, obfuscate, and pack JavaScript code!
Javascript Obfuscator converts the Java Script source code into completely unreadable form, preventing your code from analysing and theft. It's a 100% safe Java Script minifier and the best JavaScript compressor in the web.


Javascript Obfuscator can

  • compress .js files using an unique compression algorithm with impressive compression ratio;
  • remove comments, line feeds and white spaces, reducing the file size and minimizing the loading time;
  • add finishing ";" when it's necessary;
  • create a list with names of your functions and variables;
  • generate new unintelligible names and rename functions and variables depending on the selected settings;
  • command line support.

Javascript Obfuscator vs. JSMin & YUI Compressor

 JSMinYUI CompressorJavascript Obfuscator
Jquery 1.3.2
124 995 bytes
74 121 bytes
73 117 bytes
44 429 bytes
MooTools 1.2.2
   103 064 bytes
78 412 bytes
64 503 bytes
47 026 bytes
   130 349 bytes
93 955 bytes
73 511 bytes
48 244 bytes

How to Use

Open Encrypted Javascript

First of all you should open files you want to obfuscate in Javascript Obfuscator. To add .js files click "Add File" button on the Toolbar or select "Project/Add File" in the Main menu. Click the file you want to delete and then click "Delete File" button on the Toolbar or select "Project/Delete File" in the Main menu.

The window "Open dialog" will appear, where you can select .js or .efs files.
You can see that there are several files now in the list of files. You can also use drug-n-drop to add files to the list.

You can compress your files and remove comments and white spaces only. Your source code will be replaced with completely unreadable code.Check the appropriate options on the "Processing" panel.

You can also obfuscate names.To do it check "Obfuscate Names" option on Processing panel and click "Read Names" button or select "Project/Read Names" in the Main menu to read names from the added files.

Warning! Use this option with caution. For example, automatic renaming of global or interface variables may cause a script malfunction,so in most cases it requires manual renaming.

javascript encode characters Jscript Encoder

Video Tutorial

Purchase JavaScript Code Obfuscator

Ordering online is easy and secure. You can select the most suitable payment method: credit card, bank transfer, check, PayPal etc.. Paying a license fee, you get the right to use the program for life and to get free updates within one year. After you complete the payment via the secure form, you will receive a license key instantly by email.
Secure payment processing by Plimus.

Plimus, Inc.
3830 Valley Centre Dr., Suite 705-294
San Diego, CA 92130
Tel: +1 (866) 312-7733
Tel: +1 (858) 350-7473;   Fax: +1 (858) 777-5553

decompressing p a c k e r javascript files

14-day trial periodYes--
Trial reminderYes--
Number of developers
Number of processing js files per session1
Save/Open project file -YesYes
Command Line Support-YesYes
Code obfuscatingYesYesYes
Code compressionYesYesYes
Download button
$345 $99

Postal Address

For general help, troubleshooting and feature requests contact Customer Support at . Make sure to include details on your operating system, browser, Javascript Obfuscator version and a link (or relevant code).web page java obfuscator decoder


    * Great program! I am a licensed customer and find the software very useful. Javascript Obfuscator greatly compresses size and improves download time and execution speed of the protect javascript files. Obfuscated code is impossible to re-obfuscate and extremely hard or unrealizable to understand.

    * I have tried the evaluation version of your JavaScript obfuscator, everything went fine, it looks really nice. I really like the ability to add a comment header to each compress javascript file. I use this option to include a copyright notice in my commercial script.

    * I've been looking for a flexible obfuscator and I downloaded version 4.0 of your product. I walked through the example in the Step by Step and I really like the result. Thank you for a great javascript encrypt tool!mootools get url parameters

    * Hi all, I'm working on a new project, and this is the first time I've ever looked for a JavaScript obfuscator. I was trying to use the Javascript Obfuscator 4.0 trial version on my javascript file and as it appears to find and java script obfuscate all my variable and function names. Also it works very quickly even with big files.


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Highest compression

Javascript Obfuscator provides the best compression ratio
comparing with other minifires available on the Web. See the comparison table below.

yui compressor python Javascript Compressor

Unreadable code

Javascript Obfuscator generates new unintelligible names
and rename functions and variables
depending on the selected settings or pre-defined presets.
reference include smallsharptools packer Passing Xml Querystring Encode Jquery

Easy to use

Just drug-n-drop files to the program window and press "Process" button!


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How To's