CSV Cleaner
Clean messy CSV: trim spaces in every cell, remove empty rows, empty columns and duplicate rows, and tidy the header names.
Free · No upload · 100% on your device
How to use CSV Cleaner
- Type or paste your code or data, or open a file.
- Choose the settings in the side panel. The result updates as you type.
- Copy the result or download it as a file.
Private by design. Everything you type, open or record is processed in this browser tab and is never uploaded to KittySuite.
About CSV Cleaner
Duplicates are compared after trimming and ignoring capital letters, so “Delhi ” and “delhi” count as the same. Header names can be converted to snake_case for databases or Title Case for reports.
Everything runs in this browser tab: your text is never uploaded or stored, and the result updates as you type. It keeps working offline once the page has loaded.
CSV Cleaner: frequently asked questions
How do I clean up a messy CSV?
Paste or open it. Spaces in cells are trimmed and empty rows, empty columns and duplicate rows are removed, each with its own switch.
How are duplicate rows detected?
After trimming and ignoring capital letters, so “Delhi ” and “delhi” count as the same.
Can it fix the header names?
Yes. Convert them to snake_case for databases or Title Case for reports.
Can I change the separator?
Yes. Keep the input separator or save with commas, semicolons or tabs.