JSON to One Line — Minify JSON to Single Line Online

What is JSON to One Line?

Minify JSON to a single line. Remove all whitespace and line breaks.

Minify JSON to a single line by removing whitespace and newlines. Same as the JSON Minifier. Runs in your browser.

How to Use JSON to One Line

1. Paste or type your input into the editor on the left panel.
2. Results update automatically while you type. You can also press Ctrl+Enter to force a refresh.
3. View the result in the output panel on the right with full syntax highlighting.
4. Use Copy or Download to export the result.
5. Drag and drop .json or .txt files directly into the editor.
6. Toggle Tree View for an interactive, collapsible view of the JSON structure.

Example

{"a": 1, "b": 2}

{"a":1,"b":2}

Common Use Cases

• APIs
• Logs
• Compact storage

Common Errors

• Invalid JSON

Why Use Our JSON to One Line?

• 100% client-side — your data never leaves your browser. No server processing, no data collection.
• No sign-up required — start using the tool instantly with no registration or installation.
• Keyboard shortcuts — press Ctrl+Enter to run, ? for shortcuts list, Ctrl+B to toggle sidebar.
• Persistent state — your input is automatically saved across sessions using local storage.
• IDE-style interface — Monaco Editor (the engine behind VS Code) with syntax highlighting and error detection.
• Multi-format conversion — convert between JSON, XML, CSV, and YAML without switching tools.

Frequently Asked Questions

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