python minify json

Python Minify JSON: How to Reduce Data Size

If you deal with JSON files on a regular basis, you may have noticed that they can sometimes become large and unwieldy. This can make them difficult to work with, and can also slow down your applications. Fortunately, there is a way to reduce the size of your JSON files: minification.

What is Minification?

Minification is the process of removing unnecessary characters from your JSON file, such as white space and comments. This can significantly reduce the size of your file without affecting its functionality.

How to Minify JSON in Python

If you are working with JSON files in Python, there are several ways to minify them:

  • Using the JSON module: The easiest way to minify JSON in Python is to use the built-in json module. Here's an example:

import json

data = {"name": "John Smith", "age": 30, "location": "New York"}
minified_data = json.dumps(data, separators=(",", ":"))


In this example, we use the dumps() method from the json module to convert our data to a string. We pass in two arguments to dumps(): the first is our data, and the second is a tuple of separators to use. By using a comma and a colon as our separators, we tell dumps() to remove any unnecessary white space from our string.

  • Using a Third-Party Library: There are several third-party libraries available for minifying JSON in Python, such as json-minify. Here's an example:

import json_minify

data = {"name": "John Smith", "age": 30, "location": "New York"}
minified_data = json_minify.json_minify(json.dumps(data))


In this example, we use the json_minify() function from the json-minify library to minify our JSON data. We first convert our data to a string using dumps(), and then pass it to json_minify(). This function removes any white space and comments from our string, leaving us with a minified version of our JSON data.


Minifying your JSON files can help reduce their size, making them easier to work with and improving the performance of your applications. Whether you use the built-in json module or a third-party library like json-minify, the process is simple and can be done in just a few lines of code.

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