Minifying JSON with Ruby

I've written about pretty-printing JSON in the past, but not about minifying it. Sometimes you don't want an overly verbose format, i.e. when entering logs, or where you're restrained on file-sizes.

Let's say that we have a nicely pretty-printed JSON file, such as:

    "key": [
    "key2": "value"

If we want to minify the JSON, we can use the following:

$ ruby -rjson -e 'puts JSON.parse(' file.json
$ ruby -rjson -e 'puts JSON.parse(' < file.json

This then outputs it as the minified JSON string representation of the object above!


Written by Jamie Tanna's profile image Jamie Tanna on , and last updated on .

Content for this article is shared under the terms of the Creative Commons Attribution Non Commercial Share Alike 4.0 International, and code is shared under the Apache License 2.0.


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This post is part of the series nablopomo-2019.

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