Clean a CSV file online — remove empty rows, trim whitespace, deduplicate, and repair malformed rows. Free, browser-based, no upload.
Privacy: Everything runs locally in your browser. Your source file is not uploaded to JAD Apps servers.
Fix messy CSV files in one pass. The CSV Cleaner trims whitespace, removes blank rows, deduplicates identical records, and pads or truncates short or long rows so downstream imports stop failing. Everything runs locally in your browser — files never leave your device.
Free is enough for most one-off jobs. Pro raises the file and batch caps; Pro + Media unlocks GB-scale streaming and unlimited duration.
Larger files supported on Developer (5 GB CSV) and Enterprise (unlimited). All processing happens in your browser — files never reach a server.
Drop the CSV file
Drag a CSV onto the dropzone or click to browse. PapaParse reads the file in your browser; no upload occurs.
Review the cleaning options
All four cleaning operations (trim, dedupe, repair, drop blanks) are enabled by default. Adjust them if you only want a subset.
Watch the live stats
Counts of cells trimmed, duplicates removed, blank rows dropped, and rows repaired update automatically.
Download the cleaned CSV
Click Download to save the result. The file uses the same headers and column order as the source.
No — it only removes whitespace, drops empty/duplicate rows, and pads short rows with empty cells. Cell values are preserved exactly.
If a row has fewer columns than the header (often from a stray comma), the cleaner pads it with empty cells. If a row has too many columns, it truncates the extra cells. This stops 'column mismatch' errors on re-import.
The cleaner removes rows that are completely blank and rows that exactly duplicate an earlier row. Both are common after copy-paste edits in Excel or Sheets.
No. PapaParse runs entirely in your browser. The only data sent to JAD Apps is anonymous usage counts (when signed in) so your dashboard can show recent runs.
Privacy
Everything runs locally in your browser. Your source file is not uploaded to JAD Apps servers.
Run a CSV sanity check in your browser. Find row-width drift, type mismatches, duplicate headers, encoding issues, and empty cells.
Remove duplicate CSV rows by choosing a unique key column like Email, SKU, phone, or ID. Browser-based, no upload.
Delete all blank rows from a CSV file instantly. Cleans up exports with padding rows, copy-paste artefacts, or template gaps. Browser-based, no upload.