Free, Fast, and Private JSON Tools for Developers
Jsonyfier exists to provide developers with fast, reliable JSON tools that work entirely in the browser. Every tool on this site processes your data locally using JavaScript -- nothing is ever uploaded to a server. We believe developer utilities should be free, instant, and respect your privacy.
We built Jsonyfier because we needed these tools ourselves. As developers working with APIs, configuration files, and data pipelines every day, we wanted a clean, distraction-free environment for working with JSON. No accounts. No paywalls. No tracking of your data. Just tools that work.
Transform messy, minified JSON into clean, readable format with syntax highlighting. Indents with 2 spaces and color-codes keys, strings, numbers, and booleans.
Open JSON FormatterCompress JSON by removing all whitespace and formatting. See before-and-after byte savings and copy the compact result to your clipboard with one click.
Open JSON MinifierCheck whether your JSON is syntactically valid. Get detailed error messages with line numbers and color-coded feedback to quickly locate and fix problems.
Open JSON ValidatorNew to JSON or want to deepen your understanding? Our guides cover the fundamentals and help you choose the right data format for your project:
All JSON processing happens in your browser. We never see, store, or transmit the data you paste into our tools. The site uses Google Analytics for anonymous usage statistics and Ezoic for advertising. You can read our full Privacy Policy for details.
There are no accounts, no email collection, and no paywalls. Every tool is available immediately and without limits. We believe developer tools should get out of your way and let you work.
Have feedback, feature requests, or found a bug? Reach out at contact@jsonyfier.com. We read every message and genuinely appreciate hearing from our users.