CSV Cleaner
CleanCSV AI
Csv Easy
CleanSmart
Bulk Phone Normalizer
neatcsv
MessyData.app
Automatically clean customer data with a few clicks

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Upload messy CSV or Excel files, detect duplicates, missing values, date issues, and export clean results online.
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The ultimate CSV Editor. Import, tweak, fix, analyse and convert.
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Clean messy spreadsheets in minutes. CleanSmart finds duplicates, fixes formatting, fills gaps, & finds anomalies automatically. No code required. Try it free.
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Clean messy CSV phone columns before CRM, dialer, or API import. Convert safe rows to E.164, preserve the rest of your data, and split risky numbers into a needs-review file in your browser.
Compare Bulk Phone Normalizer to Clean Spreadsheets or Diffee:
neatcsv gives you 14+ data cleaning tools that run 100% in your browser. Remove duplicates, fix dates, validate emails, normalize numbers — no uploads, no server, fully GDPR compliant. Export as CSV, Excel or JSON.
Compare neatcsv to Clean Spreadsheets or Diffee: