CSV Cleanup & Deduplicate

Paste raw CSV, remove noisy rows, trim extra spaces, and deduplicate records. The cleaned output and preview update instantly in the browser.

Original rows0
Clean rows0
Duplicates removed0
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Preview

Cleaned CSV

? How to Use CSV Cleanup & Deduplicate

  1. Open the tool — works entirely in your browser.
  2. Upload your CSV, JSON, or data file, or paste your data directly.
  3. Select cleaning rules, transformations, or export options.
  4. Click Process to apply the changes.
  5. Download your cleaned or transformed data file.

Why Use This Tool

  • 100% Free — No account, subscription, or payment required.
  • Privacy First — All processing happens in your browser. Your files never leave your device.
  • No Installation — Works directly in any modern browser on any device.
  • Instant Results — Get your output in seconds without waiting for server processing.

Frequently Asked Questions

What data formats can I convert between?

The data tools support conversion between JSON, CSV, XML, YAML, and plain text table formats. This covers the most common data interchange formats used in web development and data analysis.

Can I validate JSON or CSV structure before converting?

Yes. The JSON validator checks for syntax errors and highlights the exact line and character position of any problem. CSV validation checks delimiter consistency and row-column alignment.

Is there a row or record limit for CSV processing?

The tools handle files with tens of thousands of rows without issue. For very large datasets (500,000+ rows), consider splitting the file first as browser memory may become a limiting factor.