How do I clean my CSV file?

Upload your file in the 'Clean & Normalize' tab. Select options like trimming whitespace or removing empty rows, and download the fixed file.

How does Deduplication work?

Switch to the 'Advanced Deduplication' tab. You can remove exact duplicate rows or select specific 'Unique Key' columns to identify duplicates based on just those fields.

Yes, use the 'Merge Columns' tab to select two or more columns and combine their values with a separator (comma, space, etc.) into a new column.

Can I split a column?

Yes, the 'Split Columns' tab allows you to divide a single column into multiple new columns based on a delimiter.

Is it safe to use for sensitive data?

Yes. All processing happens locally in your browser. Your data is never uploaded to our servers.

CSV Tools

The ultimate CSV utility suite. Clean messy data, remove duplicates, split or merge columns, and normalize headers—all in your browser.

How to Use This CSV Tools

1Upload your CSV file.
2Choose a tool: 'Clean', 'Dedupe', 'Split', or 'Merge'.
3Configure options (e.g., select columns to merge/split, delimiter).
4Preview the result statistics.
5Download the processed CSV file.

Features

✓Clean & Normalize: Trim whitespace, remove empty rows, fix headers
✓Advanced Deduplication: Remove duplicates by specific columns or full rows
✓Merge Columns: Combine multiple columns into one with custom separators
✓Split Columns: Divide a column into multiple parts based on delimiters
✓Header Transformation: Convert Case (snake_case, camelCase, etc)
✓100% Client-side processing (Privacy First)

The All-in-One CSV Toolkit

Data preparation is often the most time-consuming part of analysis. This suite combines powerful cleaning utilities with advanced deduplication, splitting, and merging logic, allowing you to sanitize, standardize, and transform your datasets in seconds without writing a single line of Python or SQL.