Key-value pairs to code
Turn key=value or key: value lines into JSON, YAML, .properties, .env, TypeScript, Python, PHP, Java, C#, Go, HTML options or SQL.
Process locally
Files stay in this browser session. Closing or clearing releases them.
Add text
Type or paste the text to process
Adjust settings
Optional: Separator, Code, Variable or table name and more
Run
Processes in this browser; cancel at any time
About this tool
Turn lines of key=value or key: value into code or config: JSON, YAML, .properties, .env, a TypeScript or JavaScript object, a Python dict, a PHP array, a Java Map, a C# Dictionary, a Go map, HTML <option> tags or a SQL INSERT. Use it to move settings between formats, fill a dropdown from a list, or turn a config dump into test data.
The separator can be detected for you, values can stay text or be written as numbers, true/false and null, and blank lines and comment lines are skipped. Up to 1 MB of text is converted in your browser and is not uploaded.
How to use it
- Enter one key and value per line, such as name=Alice or city: Shanghai, or select “Use example”.
- Choose the “Separator”, or leave it on “Detect”, and pick the output format under “Code”.
- Set the “Variable or table name” (data by default), and tick “Write numbers, true/false and null without quotes” if you want typed values.
- Select “Run”, then preview the code and download it with the matching extension, such as code.json or code.py.
Formats and limits
- Input
- Text
- Output
- Text
- Size limit
- 1 MB
- Settings
- Separator (Detect, =, :, Tab, Comma, Space); Code; Variable or table name; Write numbers, true/false and null without quotes
- Privacy
- Files stay in the current browser session. No file bytes are uploaded.
- Price
- Free, no sign-up
Common questions
How is the separator detected?
“Detect” tries =, then tab, then a colon (: or ：), then a comma (, or ，), then spaces, and uses the first one found in every line. Each line is split at its first separator only, so with = a value such as https://example.com keeps its colons.
Which lines are skipped?
Blank lines and lines starting with #, // or ; are treated as comments and ignored. Quotes around a value are removed, so name='Alice' gives Alice.
Which formats write typed values?
With the option ticked, JSON, YAML, TypeScript, JavaScript, Python, PHP and SQL write numbers, true/false and null without quotes. .properties, .env, Java, C#, Go and HTML options always keep values as text, and the Java, C# and Go maps are declared with string values.
What happens to keys in .env and .properties?
.env keys are turned into upper case with other characters replaced by _, so api-url becomes API_URL. In .properties, non-ASCII characters such as Chinese are written as \uXXXX escapes.
What if a key appears twice?
JSON keeps only the last value for that key. The other formats write every line as it is.
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