Edit and View JSON
Edit JSON with instant validation and a formatted, highlighted view. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Edit and View JSON
- 1. Type or paste your JSON. Start typing a new JSON document from scratch, or paste an existing one to edit. The formatted, highlighted view on the side updates as you type, with syntax errors flagged immediately.
- 2. Pick indentation and key order. Choose 2 spaces, 4 spaces or tabs for the Indent setting, and turn on Sort keys to arrange every object's properties alphabetically so the live view stays consistent as you edit.
- 3. Keep editing with instant feedback. Add, remove or restructure fields and watch the formatted view react live, catching a missing comma or unbalanced bracket the moment it happens instead of after you have moved on.
When to use Edit and View JSON
Edit and View JSON is for writing or reworking a JSON document with immediate validation, rather than typing blind and finding out about mistakes later. It pairs a plain-text editor with a live, formatted, highlighted view so you always see both the raw and the readable version.
- Hand-writing a config file from scratch. You are building a new JSON config for an app or a build tool and want to see the formatted, validated structure update as you type rather than guessing at bracket placement.
- Iterating on an API request body. You are experimenting with the shape of a request payload before sending it, adding and removing fields and watching the live view confirm each change is still valid JSON.
- Reorganizing a large, messy JSON document. An existing config has grown disorganized over time. Editing it here with sorted keys turned on keeps the structure readable as you move fields around.
- Teaching someone how JSON structure works. You are walking a junior developer through how objects and arrays nest, and watching the highlighted view update live makes the relationship between raw text and structure concrete.
Examples
Edit an object and watch the formatted view
Input
{"name":"Ada","languages":["js","ts"],"active":true}About the Edit and View JSON tool
Edit and View JSON runs as plain JavaScript in your browser tab, with no server behind it. Edit JSON with instant validation and a formatted, highlighted view. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's JSON Tools section, 90 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 2 settings, including Indent and Sort keys, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Edit and View JSON free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
Can I save what the tool produces?
Yes. Use the download or copy controls in the output panel to keep the rendered result once it looks the way you want.