A powerful, free JSON editor that runs in your browser. Edit JSON with syntax highlighting, real-time validation, tree view, and format conversion. Open multiple files in tabs, search with regex, and handle files up to 100MB+. No signup required.
Open JSON EditorEdit JSON with syntax highlighting for keys, values, strings, numbers, booleans, and null. Bracket matching, auto-indentation, and line numbers make editing large JSON files effortless.
See JSON errors as you type with exact line numbers and clear descriptions. Missing commas, unclosed brackets, duplicate keys, and trailing commas are all caught instantly.
View your JSON as a collapsible tree alongside the text editor. Navigate complex nested objects and arrays, see data types at a glance, and jump to any node.
Open multiple JSON files in tabs. Drag and drop to reorder tabs, compare files side by side with the built-in Diff Viewer, and work across files seamlessly.
Find and replace text in your JSON with support for regular expressions, case sensitivity, and whole word matching. Navigate matches with keyboard shortcuts.
Convert JSON to YAML, XML, or TOML with one click. Import YAML, XML, or TOML and convert it to JSON. Tidy Code handles the conversion cleanly and preserves your data structure.
Edit JSON files up to 100MB+ with WebAssembly-powered parsing that's 8x faster at indexing and 14x faster at searching than pure JavaScript solutions.
Tidy Code is a free online JSON editor with syntax highlighting, real-time validation, tree view, format conversion, and large file support. It runs entirely in your browser with no signup required.
Yes. Tidy Code uses WebAssembly for high-performance parsing, allowing you to edit JSON files up to 100MB+ without your browser slowing down.
Yes. Tidy Code supports multi-tab editing so you can open, edit, and compare multiple JSON files side by side with drag-and-drop tab reordering.
Yes. Tidy Code runs entirely in your browser. Your JSON data is never sent to any server. Everything is processed locally on your device.