JSON Beauty Formatter

JSON Formatter is an extension for printing JSON and JSONP nicely when you visit it 'directly' in a browser tab.

Features
● JSONP support
● Fast, even on long pages
● Works on any valid JSON page – URL doesn't matter
● Syntax highlighting
● Collapsible trees, with indent guides
● Clickable URLs
● Buttons for switching between raw and parsed JSON
● Parsed JSON is exported as a global variable, json, so you can inspect it in the console
A background worker is used to prevent the UI freezing when processing very long JSON pages.


JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language Standard ECMA-262 3rd Edition – December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.

JSON is built on two structures:
● A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array.
● An ordered list of values. In most languages, this is realized as an array, vector, list, or sequence.

These are universal data structures. Virtually all modern programming languages support them in one form or another. It makes sense that a data format that is interchangeable with programming languages also be based on these structures.