Convert text case in selected CSV columns — UPPERCASE, lowercase, Title Case, or Sentence case. Browser-based, no upload.
Privacy: Everything runs locally in your browser. Your source file is not uploaded to JAD Apps servers.
Normalise the text case in CSV cells: UPPERCASE, lowercase, Title Case, or Sentence case. Apply to every column, or pick specific columns to convert (useful when you want to lowercase emails but leave product names alone).
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 your CSV
Headers are extracted as a column checklist.
Pick the case format
UPPER, lower, Title, or Sentence. Each option shows an example.
Choose which columns to convert
Tick specific columns or leave them all unchecked to apply to every column.
Click Convert case
Cells in the chosen columns are rewritten; everything else is left alone.
Title Case capitalises the first letter of every word ('John Smith'). Sentence case capitalises only the first letter of the cell ('John smith').
No — only data rows. Headers stay as-is. Use CSV Header Rename if you want to change header capitalisation.
Standard JavaScript `toUpperCase`/`toLowerCase` is used, which handles most Unicode correctly. For locale-specific case rules (e.g. Turkish dotless 'ı'), use a scripting tool with `toLocaleLowerCase`.
Privacy
Everything runs locally in your browser. Your source file is not uploaded to JAD Apps servers.
Remove leading and trailing whitespace from every cell in a CSV file. Fix hidden spaces causing import failures. Browser-based, no upload.
Search and replace any text or pattern across all CSV cells. Supports plain text, case-insensitive, and regex modes. Browser-based, no upload.
Remove special characters, emoji, and non-alphanumeric symbols from CSV cells. Fix encoding issues before database or system imports. Browser-based, no upload.