screenshotCode Minifier (JS, CSS, HTML)  |  Download A lite and free JavasScript, CSS and HTML minifier for your browser.

Some of the important features of the Code Minifier (JS, CSS, HTML) addon are listed below. This is followed by an overview of this addon. This summary contains few words about the addon, its function, and its features. Next is FAQ, this section is useful to get information about how this addon works in your browser. If you couldn't find a specific answer, please fill the bug report form on this page or the contact form on the homepage to let us know about your question. Following the FAQ, is the bug report form. It is designed to collect user feedbacks and bugs about this addon. Users can suggest improvements or feature requests through this form too. The next section is for submitting comments about this addon which uses the Facebook comments plugin. The last section is dedicated to reports submitted through the GitHub website. We hope the information provided on this page, could help you get all the basics you need about this addon and enable you to have a better experience with Code Minifier (JS, CSS, HTML).

In short, Code Minifier (JS, CSS, HTML) is a lite addon that let you easily minify JS, CSS, and HTML codes in your browser without the need to have an internet connection. Please check the YouTube tutorial below to get an idea of how this addon works in your browser. If you want to contribute to the developement of this addon, please fork it on GitHub, and push your changes to a named branch. Moreover, you can review all the comments made on GitHub commits.

4 Reasons to Use Code Minifier (JS, CSS, HTML)

  • Has a standalone popup window with no background activities when the UI is closed.

  • Purely based on web technologies and can minify javascript, CSS and HTML.

  • Has plenty of options to adjust via the interface.

  • Available for Firefox, Chrome, Edge, and Opera browsers on all operating systems.

YouTube Tutorial

This video gives you an idea of how the extension works in your browser.

Matched Content


  • A code minifier is a tool that is used to reduce the size of a source code by removing unnecessary characters such as white spaces and comments. This can make the code more compact and faster to download, but on the other hand, could make it more difficult to read and understand. Code minification is commonly used for JavaScript, CSS, and HTML files, but can also be applied to other programming languages such as Python, PHP, Ruby, etc.

    Code minification is a technique used to reduce the size of a source code without changing its functionality. It is performed by removing unnecessary characters, such as white space, new line characters, and comments from the code. The result is a smaller file that is faster to download and parse, but more difficult to read and understand by other developers. Code minification is commonly used for JavaScript, CSS, and HTML files, but can be applied to other programming languages (such as C, Python, etc.) as well. Code minification can be useful for various reasons. For one, it can help to improve the performance of a website or web app by reducing the amount of data that needs to be downloaded by the user. As a result, this can make the website or application load faster and improve the user experience. Additionally, code minification can help reduce the amount of bandwidth, which in turn, can reduce the hosting expenses. In addition to the performance and cost benefits, code minification can also help to make a website or application more secure. Removing comments and other unnecessary characters from the code makes it more difficult for attackers to understand and potentially exploit the code. When a source code is minified, it is hard to identify vulnerabilities or insert malicious code into the application. Some code minification tools perform other transformations to the code to further reduce its size. For example, they may replace long variable names with shorter ones or merge multiple functions into a single one. These transformations can make the code even smaller and more efficient, but make it more difficult to read and understand. As with removing comments and white space, it is important to use - source maps - to maintain a connection between the original, unminified code and the minified code. The minified code is typically saved with a different file extension, such as ".min.js" for JavaScript files, to distinguish it from the original code. While code minification can provide many benefits, it is important to note that it can make the code more difficult to read and understand. This causes a problem for other developers who need to modify or update the code in the future. But as mentioned above, a source map is a solution to this drawback as it allows developers to work with the minified code while still being able to see and understand the source code.

    In conclusion, code minification is a technique used to reduce the size of a source code file without changing its functionality. It is commonly used for JavaScript, CSS, and HTML files to improve the performance and security of a website or web app, and also to save hosting costs. Code minification is typically done using specialized tools, plugins, or online applications. Complexities adding to the code during the minification process could be mitigated by using source maps to provide a mapping between the original, unminified code and the minified code. To minify JavaScript, CSS, and HTML code within your browser, you can use this extension. Please read the below FAQ items to get more information about this add-on.

Frequently Asked Questions

  • 1. What is Code Minifier?

    Code Minifier, is a lite and multi-browser addon that lets you easily minify codes in your browser. This add-on supports javascript, CSS, and HTML as input languages. You can either browser files via the (+) button at the UI (top-left corner) or drag and drop a file in the textarea (left side). The former method is preferred as the coding language for the input file can be detected automatically and the interface will be updated accordingly (no need to adjust the input language manually). This code minifier addon can work offline without the need for an internet connection. It uses an opensource library - Terser - available in this GitHub repo. Moreover it also uses the famous CodeMirror library to format the input and output codes. Within the UI there are several buttons at the top toolbar which are self-explanatory. There is also a settings list at the top which contains several options for the minifier. Change any desired settings and see the live result in the output field. To download the minified result, please click on the download button at the top toolbar.

  • 2. How can I work with this addon?

    As mentioned above, please open a file via the file selector UI by clicking on the (+) button. Once the file is loaded, please adjust the input language. If you open the file via the file selector, the addon automatically detects the input language. But, in case it was not able to detect the language, please adjust it manually. Currently, there are three languages to choose from. Once the correct language is set, please click on the minify button at the top toolbar. You will see the minified result on the right textarea. The left textarea is for the input file and the right textarea is for the output result. Please click on the download button to save the result to your machine. As mentioned above, this addon does not need an internet connection, and once the UI is closed, there will not be any background activities at all.

  • 3. How can I download the source code for Code Minifier (JS, CSS, HTML)?

    To download the source code for this extension from Chrome Web Store, it is recommended to use Extension Source Downloader. With this addon, you can download the source code as a ZIP or CRX format to your machine. If you want to download the source code from the Firefox addons store, please open the firefox download link (if available) in the Firefox browser and then right-click on the - Add to Firefox - button and select - Save Link As... - item. Choose the destination folder on your machine and then save the file in XPI format. You can then rename the XPI format to a RAR or ZIP file. Some extensions may have a GitHub repo address, which you can use to download the source code as well. But, it may not be the latest version of the addon. Therefore, downloading the source code from the official web stores is the best option as it always gives you the latest version of the addon.

  • 4. How does this addon work?

    This addon works based on two open-source javascript libraries. For the minify function, it uses the - Terser - library available in this GitHub repo. It is a lite and fast library to minify JavaScript codes. For HTML and CSS, it uses this library which is also maintained by the terser developers. For rendering input and output codes, this addon uses the famous CodeMirror library. All the libraries are purely based on web technologies and work offline on your machine.

  • 5. Does this addon has a separate options or settings page?

    No, as mentioned above, this addon does not have separate options or settings page. All the settings are available within the app interface.

  • 6. Is this addon available for mobile browsers?

    Yes, this addon is available for both mobile and desktop machines on all operating systems.

  • 7. How can I disable this addon?

    If you want to permanently disable the addon, please head to the extensions tab in your browser and then click on the disable button.

  • 8. How can I change the download location for the resulting file?

    The location that the final file is downloaded, is the default download location in your browser. To change this location, please head to the settings tab in your browser and then change the default download location from there.

  • 9. Where can I find the privacy policy for Code Minifier (JS, CSS, HTML)?

    Please read the privacy policy for this extension here.


Reporting Bugs

Your feedback goes a long way towards making this addon even better. With this feedback and bug report form, you can report bugs or suggest features/enhancements for the functionality or performance of this addon. Please note that this form will be sent to the developer(s) of this addon. You will not get an immediate or personal response at the moment. However, the developer(s) may contact you through the email address provided in this form for further clarifications or to request additional information regarding the reported bug(s).

If you want to rate or write a review for this addon in the official webstore, please press the - Rate this addon - button below.

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Please be as specific as possible. Basically, describe what happened, what you were doing when it happened, and why you think it is a problem.

Describe the step-by-step process required to reproduce the issue you are reporting. Be specific when describing these steps by providing as much detail as possible.

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Reviews | Discussions

Please note: keep these reviews/discussions clean, and avoid the usage of derogatory or inappropriate language or terminology in references to individuals or groups based on race, national or ethnic origin, color, religion, age, gender, etc. Do not submit bugs in your reviews, use the above bug-report section instead. Also, never post any personal information in these reviews.

GitHub Issues | Fork me on GitHub