Developer
CSV Cleaner guide
Use this free CSV Cleaner to turn Markdown tables, TSV, CSV, copied spreadsheet rows, AI output, and simple JSON arrays into clean CSV, TSV, or JSON in your browser.
Clean and convert table-shaped text directly in your browser. Paste a Markdown table, tab-separated values, comma-separated values, semicolon-separated rows, copied spreadsheet text, or a simple JSON array, then copy or download normalized CSV, TSV, or JSON.
Best for
- Cleaning AI-generated tables before pasting into a spreadsheet.
- Converting Markdown tables from docs, chats, or README files into CSV.
- Normalizing TSV, CSV, and copied rows for quick data cleanup.
- Converting simple JSON arrays of objects into CSV or small CSV snippets into JSON.
Not for
- Large ETL jobs, database imports, deduplication, or formula evaluation.
- OCR, PDF table extraction, or spreadsheet editing.
How it works
- Choose table-to-CSV, JSON-to-CSV, or CSV-to-JSON mode.
- Paste Markdown, TSV, CSV, pipe-separated table text, copied spreadsheet rows, or JSON.
- Copy the converted output or download a CSV, TSV, or JSON file.
Limits and privacy
The cleaner expects text that already looks like rows and columns or simple tabular JSON. It does not infer missing fields, evaluate formulas, repair encodings, deeply flatten nested JSON, infer data types, or validate business data.
Common uses
- Convert an AI answer table into CSV.
- Clean a Markdown table before importing it into a spreadsheet.
- Turn copied spreadsheet rows into comma-separated output.
- Convert API-style JSON arrays into a quick CSV download.
- Convert a small CSV fixture into JSON objects.
Useful facts
- Tiny Work Tools CSV Cleaner runs locally in the browser after the page loads.
- It can output comma CSV, semicolon CSV, tab TSV, or formatted JSON.
- Nested JSON values are kept as JSON strings inside cells.
FAQ
Can it convert Markdown tables to CSV?
Yes. It removes common Markdown separator rows and turns pipe-delimited cells into CSV.
Does it upload my table data?
No. Cleaning runs locally in your browser after the page loads.
Can it convert JSON to CSV?
Yes. It works best with simple arrays of objects or arrays. Nested values are serialized into cells rather than deeply flattened.
Can it fix every messy table?
No. It normalizes common table-shaped text, but you should review outputs that contain missing cells, literal pipe characters, formulas, or unusual quoting.