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JSON Editor

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JSON Editor is a web-based tool to view, edit, format, and validate JSON. It has various modes such as a tree editor, a code editor, and a plain text editor. The editor can be used as a component in your own web application. It can be loaded as CommonJS module, AMD module, or as a regular javascript file.

The library was originally developed as core component of the popular web application https://jsoneditoronline.org and has been open sourced since then.

Supported browsers: Chrome, Firefox, Safari, Edge.

json editor code editor

Continuous integration tests are run on GitHub Actions, and LambdaTest is used to test on all major browsers.

LambdaTest

Thanks, GitHub Actions and LambdaTest for the generous support for this open source project!

Successor: svelte-jsoneditor

This library jsoneditor has a successor: svelte-jsoneditor. The new editor is not a one-to-one replacement, so there may be reasons to stick with jsoneditor. The main differences between the two are described here.

Features

JSONEditor has various modes, with the following features.

Tree mode

Code mode

Text mode

Preview mode

Documentation

Install

with npm (recommended):

npm install jsoneditor

Alternatively, you can use another JavaScript package manager like https://yarnpkg.com/, or a CDN such as https://cdnjs.com/ or https://www.jsdelivr.com/.

Use

Note that in the following example, you'll have to change the urls jsoneditor/dist/jsoneditor.min.js and jsoneditor/dist/jsoneditor.min.css to match the place where you've downloaded the library, or fill in the URL of the CDN you're using.

<link href="jsoneditor/dist/jsoneditor.min.css" rel="stylesheet" type="text/css">
<script src="jsoneditor/dist/jsoneditor.min.js"></script>
<script>
    // create the editor
    const container = document.getElementById("jsoneditor")
    const options = {}
    const editor = new JSONEditor(container, options)

    // set json
    const initialJson = {
        "Array": [1, 2, 3],
        "Boolean": true,
        "Null": null,
        "Number": 123,
        "Object": {"a": "b", "c": "d"},
        "String": "Hello World"
    }
    editor.set(initialJson)

    // get json
    const updatedJson = editor.get()
</script>

Build

The code of the JSON Editor is located in the folder ./src. To build jsoneditor:

npm install  
npm run build  

This will generate the files ./jsoneditor.js, ./jsoneditor.css, and
minified versions in the dist of the project.

npm start  

This will update ./jsoneditor.js and ./jsoneditor.css in the dist folder on every change, but it will NOT update the minified versions as that's an expensive operation.

Test

Run unit tests:

npm test

Run code linting (JavaScript Standard Style):

npm run lint

Custom builds

The source code of JSONEditor consists of CommonJS modules. JSONEditor can be bundled in a customized way using a module bundler like browserify or webpack. First, install all dependencies of jsoneditor:

npm install

To create a custom bundle of the source code using browserify:

browserify ./index.js -o ./jsoneditor.custom.js -s JSONEditor

The Ace editor, used in mode code, accounts for about one third of the total size of the library. To exclude the Ace editor from the bundle:

browserify ./index.js -o ./jsoneditor.custom.js -s JSONEditor -x brace -x brace/mode/json -x brace/ext/searchbox

To minify the generated bundle, use uglifyjs:

uglifyjs ./jsoneditor.custom.js -o ./jsoneditor.custom.min.js -m -c

License

jsoneditor is released as open source under the permissive the Apache 2.0 license.

If you are using jsoneditor commercially, there is a social (but no legal) expectation that you help fund its maintenance. Start here.