Free online JSON flattener — convert nested JSON into a single-level object with dot-notation keys instantly in your browser. No data is stored. Configurable delimiter, max depth, and array handling.
Delimiter for nested keys
Maximum depth to flatten
Flatten arrays with [index] notation
Free online JSON flattener — convert nested JSON into a single-level object with dot-notation keys instantly in your browser. No data is stored. Configurable delimiter, max depth, and array handling.
Runs entirely in your browser. No data is sent to our servers.
Flatten a nested object into dot-notation keys
JSON Formatter
Free online JSON formatter — prettify and format JSON with configurable indentation instantly in your browser. No data is stored. Supports 0-8 space indent and optional key sorting.
JSON Validator
Free online JSON validator — check JSON syntax and get detailed error information instantly in your browser. No data is stored. Reports error line/column position and detected JSON type.
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