Clean CSV Online
One place to normalize messy comma-separated exports before analytics or mail-merge tools.
Same browser tool as Data Cleaner.
Drag TXT, CSV, or XLSX here, or
About this page
Cleaning CSV online is useful when IT blocks desktop macros or you only have a Chromebook.
Statistics show how many rows and duplicates were removed so you can sanity-check the run.
How to use
- Drag a CSV onto the drop zone or paste rows.
- Toggle trim, duplicates, and empty-row options.
- Download the cleaned CSV or XLSX.
FAQ
- What is the file size limit?
- Up to 10 MB and 100,000 rows per run, processed locally.
- Is my data uploaded?
- No. Files and pasted text are processed locally in your browser.
- Is this tool free?
- Yes. No registration is required.