Data & Cleaning

Free Data & Cleaning Tools

Transform, compare, and clean data without uploading it anywhere. Convert between CSV and JSON, compare text versions side by side, normalize whitespace, and extract emails, URLs, and hashtags from text.

4 tools100% Free & PrivateNo Sign-up Required

All Data & Cleaning (4)

Why Use Our Data & Cleaning?

Convert CSV to JSON and back with custom delimiters and header detection.

Compare two text versions with color-coded line-by-line diff highlighting.

Fix invisible whitespace issues: line endings, trailing spaces, blank lines.

Extract emails, URLs, phone numbers, and hashtags from any text block.

Frequently Asked Questions

Can I convert large CSV files?
Yes. Since processing happens in your browser, performance depends on your device memory. The tool handles files up to 50–100MB efficiently.
What diff algorithm is used for text comparison?
The Text Diff tool uses a longest common subsequence (LCS) algorithm for accurate line-by-line comparison, similar to Git's diff output.
Does the whitespace tool fix line ending issues?
Yes. It normalizes CRLF (Windows) and LF (macOS/Linux) line endings, removes trailing spaces, and collapses multiple blank lines — solving common version control issues.

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