Convert JSON to INI Online Free
Drag & drop your .json file here, or click to browse
Converts to INI on secure servers · 1 free a day, files up to 25 MB · no signup
Your first conversion each day is free (files up to 25 MB). A $2.99 one-time Day Pass unlocks 24 hours and ends by itself.
Your file is uploaded over an encrypted connection and converted on our server.
By ChangeThisFile Team · Last updated: October 2026
Your file is uploaded over an encrypted connection and converted on our server. INI files are widely used for application settings, Windows configuration, and legacy system configuration files. Free, instant, no signup.
JSON vs INI: Format Comparison
Key differences between the two formats
| Feature | JSON | INI |
|---|---|---|
| Structure | Nested objects and arrays supported | Flat key-value pairs in sections |
| Comments | Not supported in standard JSON | Supported with ; or # syntax |
| Data types | String, number, boolean, null, array, object | All values stored as strings |
| Nesting | Unlimited nested structures | Two levels: sections and key-value pairs |
| File size | Compact binary representation | Human-readable text format |
| Parsing | Fast native parsing in most languages | Simple line-by-line parsing |
| Use case | APIs, web apps, modern config files | Legacy apps, Windows config, simple settings |
When to Convert
Common scenarios where this conversion is useful
Windows application configuration
Many Windows applications and legacy software use INI files for configuration. Convert JSON settings to INI format for compatibility with older Windows programs.
Legacy server configuration
Web servers like Apache, PHP configurations, and older Linux services often use INI format. Convert JSON configs to INI for legacy system compatibility.
Simple configuration files
INI format is easier to edit by hand than JSON and doesn't require JSON parsing libraries. Convert JSON to INI for user-editable configuration files.
Migration from modern to legacy systems
When migrating from modern JSON-based configuration to older systems that only support INI, convert your existing JSON configs to the required format.
Who Uses This Conversion
Tailored guidance for different workflows
Developers
- Convert JSON config files to INI for compatibility with different tools or frameworks
- Transform JSON API responses to INI for debugging, logging, or documentation
Data Analysts
- Convert JSON exports to INI for importing into spreadsheet software, databases, or BI tools
- Transform JSON datasets to INI for sharing with teammates who use different analysis tools
System Administrators
- Convert JSON configuration to INI when migrating between infrastructure tools or platforms
- Transform JSON log exports to INI for ingesting into monitoring or analysis systems
How to Convert JSON to INI
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1
Upload your JSON file
Drag and drop your .json file onto the converter, or click to browse your files. Files of any size are supported.
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2
Automatic conversion
Your file is uploaded over an encrypted connection and converted on our server. Nested objects become sections, arrays are handled appropriately.
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3
Download the INI result
Click Download to save your converted .ini file. The output uses standard INI formatting with clear section headers and key-value pairs.
Convert JSON to INI via API
Integrate this conversion into your pipeline with 3 lines of code. Free tier: 25 conversions/month.
curl -X POST https://changethisfile.com/v1/convert \ -H "Authorization: Bearer YOUR_API_KEY" \ -F "file=@input.json" \ -F "target=ini" \ -o output.ini --fail
YOUR_API_KEY with your free key — no credit card needed.
Frequently Asked Questions
Nested JSON objects are flattened into INI sections. Each object becomes a section header [section_name], with its properties as key-value pairs below. Deeply nested objects use dot notation like [parent.child] for section names.
JSON arrays are converted to multiple INI keys with indexed suffixes. For example, an array ["a", "b", "c"] becomes key_0=a, key_1=b, key_2=c. This preserves all array data in INI format.
Yes. INI values containing equals signs, semicolons, or hash symbols are properly quoted or escaped to prevent parsing issues. String values with special characters are automatically quoted.
Free conversions accept files up to 25MB. A one-time $2.99 Day Pass raises the limit to 100MB and unlocks unlimited conversions for 24 hours.
INI format only supports string values, so all JSON data types (numbers, booleans, null) are converted to their string representations. Boolean true becomes "true", numbers become their string equivalent.
Boolean values are converted to strings: true becomes "true", false becomes "false". JSON null values are converted to an empty string or "null" depending on the specific requirements.
This conversion runs on our server, so your file is uploaded over an encrypted connection. Files up to 15MB are deleted as soon as the converted file is sent back; larger files run as a background job and are deleted automatically about a day later. We don't share your files.
The conversion preserves all data but is not perfectly lossless due to INI format limitations. Complex nested structures are flattened, and all values become strings. The INI file contains all original data but in a restructured format.
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