List Converter
Convert lists between CSV, JSON, and plain text.
Input list
Paste one item per line, comma-separated CSV, or a JSON array.
Converted output
When to use List Converter
Common ways to use List Converter:
- Quick task completion
Paste a rough list, pick the output format, and get clean results without retyping items.
- Input validation
Catch malformed JSON arrays or broken CSV quotes before you reuse a list in another tool.
- Workflow debugging
Switch between text, CSV, and JSON to compare how a list will behave in scripts or spreadsheets.
- Result sharing
Copy or export a cleaned list for documentation, tickets, spreadsheets, or chat.
- Mobile usage
Run the same conversion on phone and tablet with stacked panels and touch-friendly controls.
List Converter FAQ
- How do I use this app?
- Paste a list, choose or auto-detect the input format, choose the output format, and review the converted result. Use Clear to start over.
- Is this app free to use?
- Yes. List Converter is free to use and does not require an account.
- What happens to my input data?
- Your list is processed locally in your browser. Clipboard access only happens when you click Paste or Copy, and exported files are created locally.
- Why am I getting an error or unexpected output?
- Most issues come from invalid JSON, unbalanced CSV quotes, or cleanup options that remove empty values. Check the selected input format and try the default options.
- Where can I find instructions and troubleshooting tips?
- Open the Help panel for format examples, cleanup option notes, privacy details, and keyboard-accessible instructions.
List Converter Help
How to use
- Paste a plain-text, CSV, or JSON-array list into the input field.
- Keep Auto-detect or select the exact input format when you know it.
- Choose plain text, CSV, or JSON as the output format and adjust cleanup options.
- Copy the converted output or export it as a local file.
Supported formats
- Plain text uses one list item per line.
- CSV supports comma-separated values and quoted values with escaped quotes.
- JSON input must be an array, such as ["alpha", "beta"].
Tips
- Turn off trimming if spaces at the start or end of an item are meaningful.
- Use Remove duplicates to keep the first occurrence and discard repeated items.
- If auto-detect guesses wrong, choose the input format manually.
Privacy and safety
- Conversion runs locally in your browser and does not submit your list to the server.
- The app reads from or writes to your clipboard only after you use the Paste or Copy buttons.
- The 1 MB input limit helps prevent browser slowdowns on oversized lists.