Clean & Deduplicate Data
Remove duplicates and empty rows, trim spaces, fix case in one click.
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About Clean & Deduplicate Data
Clean & Deduplicate Data fixes the mess that builds up in a customer or item list: duplicate rows, stray spaces before a name, blank rows left behind by deletions and empty columns nobody filled. You choose which fixes to apply and which columns decide whether two rows count as duplicates, then get a count of exactly what changed. The sheet is processed in your browser.
How to use Clean & Deduplicate Data
- Open the spreadsheet and select the sheet you want to clean.
- Tick the fixes you need: trim spaces, collapse double spaces, remove empty rows or columns, remove duplicate rows.
- In Duplicate check columns pick the columns that identify a record, such as mobile or GSTIN; leave it empty to compare the whole row.
- Optionally set Text case to normalise names, then click Clean data.
- Read the summary counts and download the cleaned XLSX or CSV.
What people use it for
- De-duplicating a customer list by phone number before a WhatsApp or SMS campaign
- Cleaning a contact sheet that was pasted together from several sources
- Removing blank rows and columns from an export before importing it into billing software
- Standardising names to Title Case across a membership or student register
Good to know
Duplicate matching ignores letter case, so Ramesh and RAMESH count as the same value. The first occurrence of each duplicate is kept and later ones are removed, so sort the sheet the way you want before cleaning. Text options apply to text cells only; numbers, dates and amounts are left untouched. Always keep your original file until you have checked the result.