CSV Cleaner
Trim, deduplicate, and normalize a CSV file. Every cleanup step below is optional and only runs when you turn it on; nothing is changed silently. Processing happens in this browser — the file is not uploaded to JCF.
Drag and drop a file here, or click to browse.
About this tool
- Purpose
- Trims, deduplicates, and normalizes a CSV file.
- Try this
- Upload a CSV with extra whitespace or duplicate rows.
- Expected result
- A cleaned CSV you can download, with a summary of what changed.
- Privacy
- Your file is processed entirely in your browser and is never uploaded to a JCF server.
- Limitations
- Only performs mechanical cleanup — it doesn't validate that the data itself is correct.