Data Tools

Clean CSVs, remove duplicates, trim cells, and normalize spreadsheet data — privately in your browser.

8 tools in this category

All tools

CSV CleanerRemove duplicate and empty rows, trim cells, and normalize headers. NovaToolora previews each change on your device before you download the CSV.
Remove duplicate CSV rowsDrop later CSV rows that match an earlier row exactly. The match is case-sensitive, spaces count, and the first row stays on your device.
Remove CSV duplicates by columnRemove CSV rows that repeat the columns you choose. The comparison trims those cells, keeps the first row, and still treats case as different.
Remove empty CSV rowsDelete a CSV row only when every cell is blank or whitespace. Values such as 0 and false stay. The file is cleaned in your browser.
Trim whitespace in a CSVRemove spaces from the start and end of CSV cells. Text in the middle and header names stay as they are. Preview the edits before you download.
Find missing CSV valuesFind blank cells in the columns you choose. Zero and false stay. NovaToolora can remove incomplete rows after you preview them, and it does not invent replacement values.
Fix CSV date formatsConvert dates in one CSV column to YYYY-MM-DD using the day, month, and year order you choose. Times and invalid dates stay unchanged.
Clean a contact list CSVClean a contact list you already have. Flag email syntax, drop duplicate keys, and keep blank keys apart. NovaToolora does not find new contacts or verify inboxes.