JSON Validator

Validate JSON.

How to use

Four quick steps — paste, run, review, copy. Everything stays in your browser.

Paste your input

Paste your input

Drop CSS, HTML, JSON, or other text into the editor. Nothing is uploaded.

Run the tool

Run the tool

Click Convert or Run. The result appears instantly on this page.

Check the output

Check the output

Read the generated code and any review notes before you ship it.

Copy and use

Copy and use

Copy the output to your clipboard and paste it into your project.

About this tool

Validate JSON and surface parse errors with a clear message so you can fix trailing commas and quotes quickly.

Example

Valid sample — try adding a trailing comma to see an error.

Input

{"name":"css-to-tailwind","ok":true}

Output

Valid JSON

Tip

Trailing commas are the most common paste mistake from JS object literals.