Best data cleaning tools
A curated list of tools tagged data cleaning — free to browse, no sign-up required.
LocalCSV Lab
Free CSV & JSON tools — private, no file uploads
CSV Tidy
Clean CSV files offline and export a JSON audit
TidyCSV
Clean CSV files locally. No uploads, signup or subscription.
LigneClaire
Normalize French supplier CSV catalogues locally, with anomalies kept visible.
CSV Clinic
Clean CSVs privately in your browser — no upload, no account.
Bank CSV Normalizer
Clean inconsistent bank CSV exports locally in your browser
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