REG to JSON - Windows Registry Parser

Convert Windows .reg files to JSON format instantly. Parse registry exports for backup analysis and migration. Browser-based, private, no uploads required.

REG Input

0 keys 0 values

JSON Output

Indent:

Decode hex values to strings

Include value types

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Frequently Asked Questions

REG files are plain-text exports from Windows Registry Editor (regedit). They contain registry keys, subkeys, and values in a structured format starting with 'Windows Registry Editor Version 5.00'. Used for backup, migration, and system configuration.

Registry is organized hierarchically with root keys (HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER, etc.), subkeys forming paths, and named values storing data. Each value has a type (string, DWORD, binary) and data content.

REG_SZ (strings), REG_DWORD (32-bit integers in hex), REG_BINARY (hex bytes), REG_MULTI_SZ (multi-string arrays), REG_EXPAND_SZ (expandable strings with environment variables), and REG_QWORD (64-bit integers).

Registry paths like [HKEY_CURRENT_USER\Software\MyApp] become nested JSON objects. The converter splits paths on backslashes and creates hierarchical structure: {"HKEY_CURRENT_USER": {"Software": {"MyApp": {...}}}}.

In REG files, @="value" sets the default (unnamed) value for a key. This is converted to a special "@default" property in JSON, distinguishing it from named values.

Use for analyzing registry backups, documenting system configurations, migrating settings between systems, debugging registry issues, or converting registry exports for programmatic processing in modern applications.

DWORD values (dword:00000001) are parsed as hexadecimal integers and converted to decimal in JSON. QWORD (qword:) uses the same hex format but represents 64-bit values. The output shows both hex and decimal.

Yes. REG files use backslash escaping for special characters. \" becomes ", \\ becomes \, and hex codes like \x0A are supported. The parser correctly unescapes all standard registry string formats.

REG files can split long values across lines using backslash continuation. The parser automatically joins these continuation lines before processing, reconstructing the complete value.

Absolutely. All parsing happens locally in your browser using JavaScript. No registry data is uploaded to any server. Your sensitive system configuration stays on your device, ensuring complete privacy.

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