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CSV Cleaner Documentation

CSV Cleaner is a privacy-first, client-side utility for sanitizing and restructuring CSV datasets. It allows you to perform complex data operations like duplicate removal, date standardization, and column reordering without ever uploading your sensitive data to a cloud server. Open CSV Cleaner.

Privacy & Security

Unlike most "Online CSV Editors," CSV Cleaner is built on a local-first architecture.

  • Zero Server Uploads: Data is parsed using PapaParse directly in your browser's memory.
  • In-Memory Processing: Once you close the tab, all data is wiped from your browser's RAM.
  • SSL-Only: All operations are performed over an encrypted connection to ensure script integrity.

Standard Cleaning Options

The toolbar provides several automated cleaning toggle:

  • Empty Rows/Cols: Automatically strips trailing or middle empty vertical and horizontal slices.
  • Trim Whitespace: Removes leading and trailing spaces from every cell in the dataset.
  • Dates → ISO: Automatically detects and converts common date formats into the YYYY-MM-DD standard.

Advanced Data Manipulation

Beyond basic cleaning, CSV Cleaner offers several active tools for dataset restructuring:

  1. Reordering: Drag the column pills in the toolbar to change the sequence of columns.
  2. Renaming: Double-click any column pill to rename the header for the final export.
  3. Find & Replace: Perform global search and replace operations across specific columns or the entire dataset.
  4. Deduplication: Instantly identify and remove duplicate records based on cell content.

Multi-Format Export

You aren't limited to CSV. The tool provides one-click exports for:

  • JSON: Perfect for frontend development and NoSQL imports.
  • TSV: Tab-separated values for specific legacy systems.
  • SQL: Generates INSERT INTO statements for quick database seeding.

Frequently Asked Questions

Is there a file size limit?
The limit is determined by your device's available RAM. Most modern browsers can comfortably handle CSV files up to 100MB-200MB using this client-side approach.

Can I undo my changes?
Yes. The tool maintains a local history stack (Ctrl+Z / Ctrl+Y) allowing you to roll back cleaning operations or column reorders.

Clean your data safely

Use CSV Cleaner to sanitize your datasets without ever exposing your sensitive data to the cloud.

Launch CSV Cleaner