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INI to JSON / JSON to INI Converter
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INI files remain a common configuration format for legacy applications, Windows software, and simple settings files, organized into bracketed sections with key-value pairs. This converter transforms INI configuration into JSON, grouping each section into a nested JSON object, or converts JSON back into properly sectioned INI syntax. It's useful for developers migrating legacy application settings into a modern JSON-based config system, or generating an INI file for software that still expects that format. The converter correctly handles comments, section headers, and basic type inference for values like numbers and booleans. Since conversion happens entirely in your browser, your configuration data is never uploaded to a server, and there's no signup required. Paste your INI or JSON below to convert it instantly.
Features
- Converts INI to JSON and JSON to INI in either direction
- Groups INI sections into nested JSON objects automatically
- Infers number and boolean types from INI values
- Preserves comments where supported by the format
- Handles keys without a section (global scope)
- Instant copy-to-clipboard or file download
- Live preview of the converted output
- Fully client-side with no data upload
Why use this ini to json / json to ini converter?
- Converts legacy config files to JSON in seconds
- Keeps configuration data private with local-only processing
- Accurately preserves sections, keys, and value types
- One tool for both conversion directions
- Free with unlimited conversions
Frequently asked questions
What is an INI file used for?
INI files are simple configuration files organized into bracketed [sections] containing key=value pairs, commonly used by older Windows applications and simple software settings.
How are INI sections represented in the JSON output?
Each bracketed section becomes a nested JSON object, with its keys and values as properties inside that object.
What happens to keys that appear before any section header?
Keys without a section are treated as global or top-level properties in the resulting JSON, separate from any nested section objects.
Does the converter infer data types from INI values?
Yes, values that look like numbers or booleans (true/false) are converted to their corresponding JSON types rather than staying as plain strings.
Is my configuration file uploaded during conversion?
No, the entire conversion runs locally in your browser using client-side JavaScript - nothing is sent to a server.
Can this tool convert JSON back into a valid INI file?
Yes, it works bidirectionally, converting a nested JSON object back into properly formatted INI sections and key-value pairs.
Are comments preserved when converting INI to JSON?
Comments are not preserved in the JSON representation since JSON has no comment syntax, but the underlying key-value data converts accurately.