JSON Tools
Beautify, validate, minify, sort, escape and tree-view JSON โ all in one private, in-browser toolkit.
Paste or type JSON above to begin.
๐ Everything runs locally in your browser โ your JSON is never uploaded or sent to a server.
A complete JSON toolkit that runs entirely in your browser. Paste any JSON to instantly beautify it with 2-space, 4-space or tab indentation, minify it to a single line, or validate it with a clear error that points to the exact line and column. Sort object keys alphabetically, escape JSON into a string for embedding (or unescape it back), and explore large payloads in a collapsible tree view. Your JSON is never uploaded โ every operation happens locally, so it is safe for private API responses, configs and secrets.
Frequently Asked Questions
Is my JSON sent to a server?
No. Every operation โ formatting, validating, minifying, sorting, escaping and the tree view โ runs entirely in your browser using the native JSON parser. Nothing is uploaded, logged or stored, so it is safe for confidential API responses, tokens and config files.
What does the JSON validator tell me when my JSON is invalid?
It shows the exact parser error and, when the browser provides a position, the line and column where parsing failed โ for example a missing comma, an unquoted key or a trailing comma. Valid JSON shows a green 'โ Valid JSON' badge along with its size and key count.
How do I beautify or format JSON?
Paste your JSON and click Beautify / Format. You can choose 2-space, 4-space or tab indentation, and the output updates if you change the indent setting. The formatted result is shown in a read-only box with Copy and Download .json buttons.
What is the difference between minify and escape?
Minify removes all whitespace to produce the smallest valid JSON on one line โ ideal for payloads and storage. Escape converts the whole JSON into a quoted, backslash-escaped string so you can embed it inside another JSON document, a code literal or a config value; Unescape reverses it.
What does Sort keys do?
It recursively reorders every object's keys into alphabetical (AโZ) order while preserving array order and all values, then re-formats the result. This makes diffing two JSON files and finding fields much easier.
Can it handle large JSON files?
Yes. Because everything runs locally with the browser's optimized native parser, large documents format and validate quickly. The collapsible tree view also lets you expand and collapse nested objects and arrays to navigate big payloads without scrolling through raw text.
How is this better than other online JSON formatters?
Most JSON sites split formatting, validation, minifying, sorting and escaping across separate ad-supported pages. This tool combines all of them plus a tree view in one page, points validation errors to the exact line and column, shows size and key-count stats, and keeps everything private in your browser โ no ads and no signup.