JSON to One Line

Converting JSON to one line is a common requirement when you need to paste JSON into command-line tools, embed it in code strings, include it in log files, or prepare it for environments that don't handle multiline strings well. Our tool transforms beautifully formatted JSON with indentation and line breaks into a compact single-line string that's easy to copy and paste anywhere.

Use Cases for Single-Line JSON

Single-line JSON is particularly useful when working with command-line interfaces that require JSON arguments on a single line, embedding JSON in shell scripts or batch files, pasting JSON into chat applications or documentation, including JSON in single-line code comments, storing JSON in environment variables, or copying JSON to systems that strip newlines. The compact format ensures compatibility across different environments.

Character Count Display

Our tool displays the character count of the output, which is helpful when working with systems that have character limits, such as command-line arguments, environment variables, or API parameters. Knowing the exact length helps you determine if your JSON will fit within constraints and whether you need to reduce the data or split it into multiple parts.

Validation and Safety

Before converting to one line, our tool validates your JSON to ensure it's syntactically correct. This validation step prevents you from creating invalid single-line strings that would fail when parsed. The tool uses JSON.parse() followed by JSON.stringify() with no spacing, guaranteeing that the output is valid JSON that will work correctly when passed to other systems or pasted into code.