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JavaScript Obfuscator VS Prepack

Compare JavaScript Obfuscator VS Prepack and see what are their differences

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JavaScript Obfuscator logo JavaScript Obfuscator

JavaScript Obfuscator is a free online tool that obfuscates your source code, preventing it from being stolen and used without permission.

Prepack logo Prepack

Prepack is a partial evaluator for JavaScript.
  • JavaScript Obfuscator Landing page
    Landing page //
    2023-09-23
  • Prepack Landing page
    Landing page //
    2019-09-02

JavaScript Obfuscator features and specs

  • Increased Code Security
    JavaScript obfuscation makes the code difficult to understand, providing an additional layer of security against code theft and unauthorized use.
  • Protection from Reverse Engineering
    By transforming the code into an unreadable format, obfuscation helps shield your code logic from competitors seeking to replicate your functionality.
  • Deterrence against Hackers
    Obfuscated code acts as a deterrent to hackers by making it time-consuming and resource-intensive to attempt to decipher the software’s mechanics.
  • Preservation of Functionality
    Despite altering the code appearance, obfuscation ensures that the original behavior and functionality of the JavaScript code remain unchanged.
  • Customization Options
    The obfuscator provides multiple options and settings for customizing the level and style of obfuscation, allowing you to balance between security and performance.

Possible disadvantages of JavaScript Obfuscator

  • Performance Overhead
    Obfuscated code can be less performant since the transformations applied can increase the size and decrease the readability of the code, impacting loading times.
  • Debugging Challenges
    Diagnosing and fixing issues in obfuscated code can be challenging due to the lack of meaningful variable names and structural clarity.
  • Not Foolproof
    While obfuscation increases the difficulty of reverse engineering, it is not an impenetrable solution, and determined attackers can still potentially decode the logic.
  • Potential Compatibility Issues
    Obfuscation might introduce compatibility problems with certain environments or tools, particularly if aggressive transformations are applied.
  • Increased Build Complexity
    Integrating obfuscation into the development and deployment pipeline adds complexity, requiring additional steps and potential modifications to the build process.

Prepack features and specs

  • Performance Optimization
    Prepack optimizes JavaScript code by evaluating and executing pure computations at compile time, reducing runtime computation and improving performance.
  • Size Reduction
    By performing partial evaluation, Prepack can eliminate dead code and constants, leading to smaller bundle sizes and potentially faster load times.
  • Improved Initialization
    Prepack can precompute portions of code, allowing applications to start faster by requiring less initialization time at runtime.
  • Code Inlining
    Prepack efficiently inlines certain functions and computations, reducing the indirection and increasing execution speed.

Possible disadvantages of Prepack

  • Complex Setup
    Integrating Prepack into a build process can be complex, requiring careful configuration and testing to ensure the correct behavior of the optimized code.
  • Limited Use Cases
    Prepack works best with statically analyzable code and may not benefit dynamic codebases as much, restricting its applicability.
  • Potential Bugs
    There could be corner cases where Prepack's optimizations lead to unexpected behaviors or bugs, especially in complex applications.
  • Maintenance and Support
    As of the latest updates, Prepack's development activity has slowed, which might be a concern for long-term support and maintenance.

JavaScript Obfuscator videos

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Prepack videos

Prepack : Clif Bar Review! ALL FLAVORS in ONE VIDEO!*

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  • Review - sativa prepack shake review

Category Popularity

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Web Application Bundler
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Code Analysis
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Tool
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Code Review
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User comments

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Social recommendations and mentions

Based on our record, JavaScript Obfuscator should be more popular than Prepack. It has been mentiond 29 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

JavaScript Obfuscator mentions (29)

  • Here's how to brew obfuscation in JavaScript without burning the lab: AST, Babel, plugins.
    Now let's take the above code and modify it with a popular obfuscator for JS - obfuscator.io. As a result, we will get a code like this:. - Source: dev.to / 4 months ago
  • How to Encrypt JavaScript Code for Web Security
    You can use tools like JavaScript Obfuscator or UglifyJS to obfuscate your code. - Source: dev.to / 7 months ago
  • What to do when someone clones your site?
    I know it's frowned upon here, but there are commercial and open source[1] javascript obfuscators with domain locking functionalities. If your site is already a SPA, they can make it very painful to just lift it (not impossible, obviously, because everything is reverse-engineerable, but the point is to discourage the majority of thiefs). You can be creative: for example, if whoever cloned your site is located in... - Source: Hacker News / 9 months ago
  • Need ideas with modding TCOAAL
    I don't need/use IDA, Nemlei just used https://obfuscator.io/, which just obfuscates the crap out of the code using various known methods (which I won't go into detail, it's public knowledge) and an un-obfuscation was cooked up by others. The one fucked-up thing the website does is randomizing function names, it just changes every variable/function name. We can't "un-obfuscate" those, so it's up to our brains to... Source: over 1 year ago
  • How do human read code like this
    It's to purposefully makes your code harder to read so it prevents people from stealing your work. Here's a tool that does it: https://obfuscator.io/. Source: over 2 years ago
View more

Prepack mentions (4)

  • LLRT: A low-latency JavaScript runtime from AWS
    If I understand it correctly, it exchanges execution speed (by not using JIT) for faster starts. Instead, they could pick up the old FB project https://prepack.io/ to optimize both start AND execution speed. It would be very interesting to see it together with node's snapshots: https://blog.logrocket.com/snapshot-flags-node-js-v18-8/, which reduces the start significantly. - Source: Hacker News / over 1 year ago
  • [AskJS] Are there any surviving alternatives to prepack?
    For those uninitiated, Prepack was a neat JavaScript code optimizer. It eliminated computations that could be done at compile time. https://prepack.io/ The project has been dead for quite a while, but it has valid use cases to this day. Source: about 2 years ago
  • Understanding the Performance Impact of Generated JavaScript
    Surely this is the job for something like https://prepack.io/. Source: almost 3 years ago
  • Memoirs of a lone JavaScript developer PART 2 : Svelte. An awful implementation of an old idea.
    Some real examples in JavaScript can be seen on Prepack[2]. Consequently it is natural to wonder whether we can AOT compile components of client side frameworks, to achieve a reduction in the final bundle size, but also to increase application execution speed. Source: over 3 years ago

What are some alternatives?

When comparing JavaScript Obfuscator and Prepack, you can also consider the following products

Terser - JavaScript parser, mangler, optimizer and beautifier toolkit for ES6+

CodeRush - DevExpress CodeRush for Roslyn uses significantly less memory, works faster, and lets you start Visual Studio faster.

UglifyJS - JavaScript minifier, beautifier, mangler and parser toolkit.

ReSharper - ReSharper is a productivity tool for visual studio that provides tools and features to help you manage your code.

Closure Compiler - The Closure Compiler is a tool for making JavaScript download and run faster.

Productivity Power Tools - Extension for Visual Studio - A set of extensions to Visual Studio 2012 Professional (and above) which improves developer productivity.