JSON Viewer

View large JSON files without freezing the tab

JSON is parsed in a background Web Worker, and only the rows currently on screen are rendered — so a large API response or export doesn't lock up the page the way a plain formatter does. Drop a file or paste to try it.

JSONPathJSONL ModeJSON DiffSchema ValidatorJWT DecoderAPI InspectorLarge FilesTypeScriptPythonGoRustJavaC#SwiftJavaScriptCSVYAMLXMLTOMLSQL

Paste JSON (⌘V) or drop a file to inspect it

Nothing you paste or drop ever leaves your browser.