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UglifyJS VS Javascript Formatter

Compare UglifyJS VS Javascript Formatter and see what are their differences

UglifyJS

JavaScript minifier, beautifier, mangler and parser toolkit.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
Javascript Formatter

Free formatter for JavaScript, JSON, React.js, HTML, CSS, SCSS, and SASS

No screenshot yet
Rating
0 reviews
Alternatives Is it good?
SquadPrime
Free MVP cost calculator: describe your app in 5 clicks and get a realistic 2026 estimate for a freelancer build, a traditional agency and a fixed-price 14-day build by senior professionals, where the client owns the code. sponsored

Which is more popular?

Javascript Formatter might be a bit more popular than UglifyJS. We know about 1 link to it since March 2021 and only 1 link to UglifyJS.

social mentions
1 vs 1
Tool popularity
100% vs 0%
alternatives listed
99 vs 13

Base details

Website, pricing, platforms and company facts side by side.

UglifyJS
Javascript Formatter
Website lisperator.net javascriptformatter.com
Pricing
Open source
—
Listed in
Tool Web Application Bundler Developer Tools Development +1
Developer Tools Coding Text Editors JavaScript +1

Features and specs

What each product offers, as listed by its team.

UglifyJS 4 features
Javascript Formatter 0 features
  • Minification
    UglifyJS effectively reduces the file size of JavaScript by removing whitespace, shortening variable names, and eliminating unnecessary code, which can lead to faster load times in web applications.
  • Maturity and Stability
    As a mature and well-established tool, UglifyJS has a long history of usage and a strong community, making it a reliable choice for JavaScript minification with less risk of encountering severe bugs.
  • Customization
    UglifyJS offers various options and configurations that allow developers to control the minification process, such as toggling specific optimizations and preserving certain comments.
  • Compression
    Besides minification, UglifyJS provides compression options which further optimize the JavaScript code by evaluating constant expressions and removing unreachable code.

Possible disadvantages

  • Source Mapping Complexity
    Generating source maps with UglifyJS can sometimes be complex and might not always accurately map minified code back to the original source, complicating debugging efforts.
  • Transformations Side Effects
    Some of the aggressive transformations made by UglifyJS could potentially introduce bugs if the original code relies on exact syntax structure or has side effects that depend on expression evaluation order.
  • Limited ES6+ Support
    Historically, UglifyJS has lagged in support for newer ECMAScript features compared to other modern minifiers, which might cause issues when dealing with ES6+ syntax without transpiling it first.
  • Error Diagnosis
    When errors occur during the minification process, UglifyJS may not always provide clear or detailed error messages, which can make it difficult to diagnose and fix issues.

No features have been listed yet.

Analysis

An editorial look at what each product does well and who it suits.

UglifyJS
Javascript Formatter

No analysis of UglifyJS yet.

Overall verdict

  • JavaScript Formatter (javascriptformatter.com) is a solid, no-frills online tool for beautifying and cleaning up messy or minified JavaScript code quickly and for free, making it a good choice for casual or occasional formatting needs rather than heavy-duty professional development workflows.

Why this product is good

  • Free and easy to use with no installation required
  • Simple web interface accessible from any browser
  • Quickly beautifies minified or poorly indented JavaScript code
  • Useful for basic readability improvements without needing an IDE plugin
  • No account or sign-up required for basic use

Recommended for

  • Students learning JavaScript who need to read formatted code
  • Developers who need a quick one-off formatting fix
  • Users without access to a code editor with built-in formatting
  • People debugging or reviewing minified third-party scripts
  • Casual coders who don't want to install additional software

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
UglifyJS
Javascript Formatter
100% 100%
Tool
0% 0%
0% 0%
Coding
100% 100%
100% 100%
Web Application Bundler
0% 0%
0% 0%
Text Editors
100% 100%

User comments

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

UglifyJS 1 mention
Javascript Formatter 1 mention
  • Overview of the next-gen frontend dev tools
    There are many minifiers such as terser and uglify. But, because minifying also require to parse the JS, it is actually possible to use esbuild and SWC to minify the code. Here's a benchmark of the main minifiers. - Source: dev.to / almost 4 years ago
  • JavaScript Trademark Update
    I wonder if non-commercial websites like [1] JavaScript Formatter are allowed under this trademark rule? Its two words and non-commercial so its fine? [1]https://javascriptformatter.com. - Source: Hacker News / over 1 year ago

Alternatives to UglifyJS and Javascript Formatter

When comparing UglifyJS and Javascript Formatter, you can also consider the following products.

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