JSON Editor

Four editable views of one document

The same JSON is available four ways, all of them editable, and switching between them never loses your changes. Code is a full text editor. Tree is an editable outline: click a key to rename it, click a value to change it, and use the row menu to change a type, reorder, duplicate, or delete. Table lays an array of objects out as rows and columns whose cells you type into directly, nested fields included. Grid does the same for deeply nested data, either laid out in full or drilled through one branch at a time.

Which one you want depends on the edit. Renaming a field across a structure is fastest in the tree; correcting twenty values in an array of records is fastest in the table or grid; anything involving whitespace, bulk find-and-replace, or multi-cursor work belongs in the code view. A cell that holds a whole object or array opens as editable JSON, so nothing in the document is out of reach from wherever you happen to be.

A real code editor for JSON

The Code view is built on Monaco, the open-source engine that powers Visual Studio Code. That means the editing experience you already know — keyboard shortcuts, bracket matching, code folding, a minimap, and multi-cursor editing — applied to JSON in the browser, with no install and no sign-up.

It is the right view when you need to change JSON as text: tweaking a config value, fixing a single field in a response, or hand-authoring a small document from scratch. One thing worth knowing is that a structural edit made in the tree or table rewrites the document from the parsed data using your indentation setting, so formatting JSON does not preserve — objects written on one line, for instance — comes back expanded. Edits made in the code view leave your formatting untouched.

Live validation as you type

The editor parses your document continuously and underlines syntax problems the instant they appear, with a clear message and a line-and-column reference. You catch the missing comma or stray bracket while you are typing it, not after you paste the result somewhere and it breaks. One shortcut reformats the whole document so it stays tidy as you work.

Edit JSON online, then validate and format

Editing JSON by hand usually means risking a stray comma or an unbalanced bracket. Here you get a full online JSON editor: type or paste your document and the editor flags mistakes inline while you work, then reformats everything with one shortcut so the result stays clean. There is nothing to install and no account to create.

It pairs naturally with the rest of the toolkit — open a payload to fix one field, format it, and validate it against a schema without switching pages.

JSON editor online — edit JSON in your browser

A JSON editor online is a code editor that runs in the browser, so you can write, edit, and validate JSON without installing any software. This one is built on Monaco — the same open-source engine behind Visual Studio Code — giving you the familiar shortcuts, bracket matching, code folding, and inline error highlighting you already know from a desktop IDE.

Editing JSON online is the right move any time you need to tweak a config, fix a single field in an API response, or hand-author a small document and you do not want to open a text editor or install an extension. Paste your JSON, make the change, validate it, and copy the result — all without leaving the browser tab.

What is JSONEditor Online?

JSONEditor Online is a well-known browser-based JSON editor concept: a web tool that pairs a text view with an editable tree view so you can work on a document either way, with no install required. This tool follows the same idea and goes further — the code pane is Monaco (the VS Code engine) with live validation and auto-format, the tree is fully editable, and there are table, grid, and graph views alongside them.

Whether you are looking for a classic JSONEditor Online experience or a VS Code-quality editor in the browser, the workflow is the same: paste or type your JSON, edit it in whichever view suits the change, format it, and copy or download the result. Nothing is uploaded — all processing runs locally in your browser.