PleaseJSON
Safe to use with polyfilljsJSON is a language-independent data interchange format based on a loose subset of the JavaScript grammar.
- Verdict
- Safe to use
- Category
- JavaScript APIs
- Browser support
- Can I Use
- Works in
- IE8+
Should you use JSON in 2026?
Originally popularized by Douglas Crockford, the format was standardized in the fifth edition of the ECMAScript specification.
JSON 3 is a polyfill compatible with nearly all JavaScript platforms. It is a drop-in replacement for JSON 2 that uses feature tests to detect broken and incomplete native JSON implementations, supports asynchronous module loaders and has-aware optimizers, and is built to specification standards.
JSON 2 is an older, alternative polyfill by Douglas Crockford.