JSON Formatter - Format, Validate and Explore JSON Online
This JSON formatter helps developers format, minify, validate, search and inspect JSON data directly in the browser. It is designed for large API responses, logs, configuration dumps and nested objects, with a visual tree viewer that keeps complex data readable.
Core Features
Format and Minify
Beautify compact JSON for review, or compress formatted JSON into a smaller payload for transport and storage.
Validate JSON
Parse errors are shown with useful messages so invalid quotes, trailing commas and broken escapes are easier to find.
Search and Filter
Search keys and values, collapse non-matching nodes and create array filters when you need to isolate matching records.
Visual Editing
Inspect nested objects, copy fields and paths, edit values in place and use fullscreen mode for large data sets.
How to Use
Paste JSON
Paste JSON into the left editor or import a local file. The parser updates the visual tree automatically.
Format or compress
Use the Format menu to beautify or minify the JSON. Use Escape when working with JSON stored inside a string.
Explore and export
Search the tree, copy values or paths, filter arrays and export the current JSON when the result is ready.
FAQ
Does this tool upload my JSON?
No. Formatting, validation, search and filtering all run locally in your browser.
Can it handle large JSON files?
Yes. The viewer uses lazy rendering and collapses complex structures so very large files remain usable.
What is the difference between format and compress?
Format adds indentation and line breaks for reading. Compress removes unnecessary whitespace for smaller output.