10 Best Free Online JavaScript to Base64 Converter Websites

Here is a list of best free online JavaScript to Base64 converter websites. JavaScript is a high-level and dynamic programming language primarily used in web development. It helps developers make interactive web pages consisting of animations and dynamic content. On the other hand, Base64 is binary to text encoding scheme that represents audio, images, and other binary data in the form of an ASCII string. Base64 is also used in the encoding of various data and programming codes. At times, it is necessary to protect the sensitive part of the JavaScript code using the Base64 encoding method. If you also want to do that, then check out these online JavaScript to Base64 converter websites.

Using these websites, users can quickly convert a piece of JavaScript code to Base64 format. Not only that, users can also edit the input JS code within these websites. Some of these converters can also detect errors in input JavaScript code that helps users rectify errors before starting the conversion process. After performing the conversion, users can copy the base64 code to the clipboard. In some cases, users can even download the final base64 code in TXT file format. To help new users, I have also included the necessary JS to base64 conversion steps in the description of each website. Go through the list to know more about these websites.

My Favorite Online JavaScript to Base64 Converter Website:

codebeautify.org is my favorite website as it can detect errors in input JavaScript code before converting it to Base64 format. Plus, it lets users save the converted Base64 code in TXT file format.

You can also check out lists of best free Online JavaScript Validator, Online Javascript Obfuscator, and Online Text to Base64 Converter websites.

Comparison Table:

Features/Website Names	Lets users edit the JavaScript Code	Allows users to save the output Base64 code	Can detect error in JavaScript Code
codebeautify.org	✓	✓	✓
base64.alanreed.org	✓	x	x
base64encode.org	✓	x	x
rot47.net	✓	x	x
emn178.github.io	✓	x	x
freeformatter.com	✓	✓	x
utilities-online.info	✓	✓	x
onlinestringtools.com	✓	✓	x
javaguides.net	✓	x	x
smalldev.tools	✓	x	x

codebeautify.org

codebeautify.org is a free online JavaScript to Base64 converter website. Through this website, users can encode JavaScript code and JavaScript code files to Base64 code format. It also lets users edit the JS code before starting the conversion process. Besides this, it also adds syntax highlighting to input JS code. I also like its ability to detect syntax errors in input JS code. After performing the conversion, users can save the Base64 code in a TXT file. Now, follow the below steps.

How to convert JavaScript to Base64 online using codebeautify.org:

Launch this website using the given link.
After that, enter the JavaScript code in the input field.
Now, click on the JavaScript to Base64 button to start the conversion process.
Finally, view and locally save the base64 code TXT format.

Additional Features:

This website also comes with additional online tools such as XML Formatter, JSON Formatter, XML Editor, YAML Editor, Unit Converter, and more.

Final Thoughts:

It is one of the best free online JavaScript to Base64 converter websites that can convert both JavaScript code and JavaScript files to Base64 format.

Pros	Cons
Can convert JS data and JS files to Base64
Can detect errors in input JS code
Supports syntax highlighting

Home Page

base64.alanreed.org

base64.alanreed.org is another free online JavaScript to Base64 converter website. This website offers a simple Base64 Encoder and Decoder tool through which users can convert JavaScript and any other type of code to Base64 format. Using its Decoder functionality, it can also be used to convert back Base64 code to JavaScript format. Unlike, other similar websites, it cannot detect syntax errors in input JS code. Now, follow the below steps.

How to encode JavaScript to Base64 online using base64.alanreed.org:

Visit this website and access the Base64 Encoder and Decoder tool.
After that, enter the JS code in the Encode field.
Now, click on the Encode button to view the base64 code that users can copy.

Additional Feature:

This website also provides an additional Webpage Source Code Viewer tool.

Final Thoughts:

It is another good JavaScript to Base64 converter website that can also convert back Base64 to JS format.

Pros	Cons
Can convert base Base64 code to JS code	Cannot detect errors in input JS code

Home Page

base64encode.org

base64encode.org is another free online JavaScript to Base64 converter website. As its name suggests, it is a Base64 encoder website that can encode JavaScript code to Base64 format. It also gives an option to encode each JS code line separately. Besides this, options to change the character set, newline separator, and split lines into 76-character wide chunk is also provided. It also offers a decoder that can decode Base64 code to JS code. Although, it cannot detect errors in JS code syntax. Now, follow the below steps.

How to convert JavaScript to base64 online using base64encode.org:

Visit this website and access the Encode to Base64 format tool.
After that, enter the JS code in the input field.
Next, adjust encode binaries using available options.
Finally, click on the Encode button to view the converted base64 code.

Final Thoughts:

It is another simple JavaScript to Base64 converter website that can also convert back base64 code to JS code.

Pros	Cons
Lets users adjust multiple encode binaries	Cannot detect errors in input JS code
Can convert back base64 code to JS code

Home Page

rot47.net

rot47.net is another free online JavaScript to Base64 converter website. Through this website, users can convert text data, JavaScript code, and codes of many other programming languages into Base64 code format. It also offers examples of sample data that users can encode to Base64 format. An inbuilt, Decode tool to convert back base64 data to JS is also provided. Now, follow the below steps.

How to convert JavaScript to Base64 online using rot47.net:

Visit this website using the given link.
After that, enter the JS code in the input field.
Now, click on the Encode button to start the conversion process.

Additional Features:

This website also has additional online tools such as Binary File to Base64, ROT47 Character Substitution Cipher, etc.

Final Thoughts:

It is another good JavaScript to Base64 encoder website that can convert JS code to Base64 in no time.

Pros	Cons
Can convert back base64 code to JS code	Cannot detect errors in input JS code

Home Page

emn178.github.io

emn178.github.io is another free online JavaScript to Base64 converter website. This website has a Base64 Encoder tool that can quickly encode JS code to Base64 format. Although, it cannot detect errors in input JS code. After performing the conversion, users can edit both JS and Base64 codes. Now follow the below steps.

How to convert JavaScript to Base64 online using emn178.github.io:

Go to this website and access the Base64 Encode tool.
after that, enter the JS code in the input field.
Now, click on the Encode button to start the encoding process.
Finally, view and copy the base64 code.

Additional Features

This website also contains additional tools like CRC-16 hash function, SHA224 hash function, MD5 hash function, Base32 decoder, URL decoder, etc.

Final Thoughts:

It is another good online JavaScript to Base64 converter that anyone can use with ease.

Pros	Cons
Can encode JS code to base64 in real-time

Home Page

freeformatter.com

freeformatter.com is another free online JavaScript to Base64 converter. Through this website, users can convert both JavaScript code data and JavaScript code files to Base64 format. After performing the conversion, users can edit both JS code and output Base64 code. The final base64 code can also be saved in TXT file format. An inbuilt decoder is also provided by it that converts back base64 code into JS code. Now, follow the below steps.

How to convert JavaScript to Base64 online using freeformatter.com:

Go to this website using the given link.
After that, access the Base64 Encode tool.
Now, paste the JS data in the input field or load a JS file.
Next, click on the Encode button to start the conversion process.
Finally, view and download the final Base64 code.

Additional Features:

This website has a lot of additional online tools like XML Formatter, SQL Formatter, XML Validator, XPath Tester, JavaScript Beautifier, CSS Minifier, etc.

Final Thoughts:

It is another simple and effective online JavaScript to Base64 converter that can also be used to convert back Base64 files to JS code.

Pros	Cons
Can perform both JS to Base64 and Base64 to JS conversions
Lets users save base64 code in TXT format

Home Page

utilities-online.info

utilities-online.info is another free online JavaScript to Base64 converter website. This website offers a Base64 Encode and Decode tool through which users can convert JS code base64 and vice-versa. It also lets users upload JS files that can be converted to JS code. After performing the conversion, users can copy the base64 code or save it in TXT file format. Now, follow the below steps.

How to convert JavaScript to Base64 online using utilities-online.info:

Launch this website and access the Base64 Encode Decode tool.
After that, upload a JS file or paste the JS code in the input field.
Now, click on the Encode button to start the conversion process.
Finally, view and download the final base64 code.

Additional Features:

A good set of related tools are also offered by it like XML to JSON, Base64 Decoder, ASCII to Decimal Converter, etc.

Final Thoughts:

It is another good online JavaScript to Base64 converter that lets users save the final base64 code in TXT file format.

Pros	Cons
Can perform both JS to base64 and base64 to JS conversions
Lets users save the base64 code in TXT file format

Home Page

onlinestringtools.com

onlinestringtools.com is a free online JavaScript to Base64 converter website. Through this website, users can convert both JavaScript code and JavaScript code files to base64 format. It also lets users edit the JS code and enable Base64 chunks before starting the conversion process. After the conversion, users can download the converted base64 code in TXT file format. Now, follow the below steps.

How to convert JavaScript to base64 online using onlinestringtools.com:

Visit this website using the given link.
After that, enter the JS code or load a JS file.
Now, enable the base64 chunks option if you want.
Finally, view the converted base64 code that can also be saved locally in TXT file format.

Additional Features:

This website also offers additional string tools like URL encode a string, URL decode a string, Generate a random string, extract a substring, split a string, etc.

Final Thoughts:

It is another simple online JavaScript to Base64 converter that can quickly convert JS files and data to base64 format.

Pros	Cons
Can convert both JS files and JS data to Base64 format	Its free version imposes a 10-second delay in downloading of base64 file
Lets users save the base64 code in TXT file format

Home Page

javaguides.net

javaguides.net is another free online JavaScript to Base64 converter website. Through this website, users can encode JavaScript code using the Base64 algorithm. It also allows users to decode Base64 code to the original JS code. Apart from JavaScript, it can also be used to encode code of many different languages to Base64 format. After converting JS code base64, users can copy the code to the clipboard. Now, follow the below steps.

How to convert JavaScript to Base64 online using javaguides.net:

Visit this website and access the Base64 Encode tool.
After that, paste the JS code in the input section.
Next, click on the Encode button to view the base64 code that you can copy.

Additional Features:

This website also offers tools like URL Encoder, URL Decoder, HTML Editor, HTML Compiler, etc.

Final Thoughts:

It is another good online JavaScript to Base64 converter website that anyone can use with ease.

Home Page

smalldev.tools

smalldev.tools is the last free online JavaScript to Base64 converter website. Like most other similar websites, it also offers a Base64 Encoder tool that can convert JS code to base64 code format. It also lets users edit the input JS code before starting the conversion process. Now, follow the below steps.

How to convert JavaScript to Base64 online using smalldev.tools:

Visit this website and open up the Base64 Encode tool.
After that, enter the JS code in the Input field,
Now, click on the Encode button to start the conversion process.
Finally, copy the base64 code.

Additional Features:

This website also offers handy tools like Code Share Bin, JSON Decoder, JSON Formatter, Base64 Encoder, URL Encode Online, etc.

Final Thoughts:

It is another simple and effective online JavaScript to Base64 converter that anyone can use without much hassle.

Pros	Cons
Lets users edit JS code

Home Page

Frequently Asked Questions

How to convert to Base64 in js?

In JavaScript, you can convert a string or binary data to Base64 using the built-in btoa() function for strings or by utilizing the Uint8Array and btoa() functions for binary data (such as ArrayBuffer or Uint8Array).

What is Base64 in JavaScript?

In JavaScript, Base64 refers to the process of encoding binary data into an ASCII string representation using a set of 64 printable characters. It is a common method used to represent binary data, such as images, audio, or files, as text, making it easier to transmit and handle the data in contexts that do not support binary directly.

How to Base64 decode in JavaScript?

In JavaScript, you can decode a Base64-encoded string back to its original binary data (or text form) using the built-in atob() function.

How to generate Base64 encoded string?

In JavaScript, you can generate a Base64-encoded string by using the built-in btoa() function. The btoa() function stands for "binary to ASCII" and is used to encode a regular string into Base64 format.

How to convert binary string to Base64?

To convert a binary string to Base64 in JavaScript, you first need to convert the binary data to a regular string using String.fromCharCode() and then encode the resulting string using the btoa() function.

How to Base64 image in JavaScript?

To Base64 encode an image in JavaScript, you can first load the image using the FileReader API or create an Image element. Once you have the image data, you can convert it to Base64 using the Canvas API.

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