Simple Data Cleaner

What it does

Most data cleaners make you upload files to their servers. We don’t. Simple Data Cleaner runs entirely in your browser—your files never leave your device. You get the same validation and formatting (UK phones, NI numbers, postcodes, sort codes, emails) without sending data anywhere. No new compliance steps, no “where did our data go?” Built for teams that care about privacy and GDPR.

Clean and validate UK phone numbers, NI numbers, postcodes, bank sort codes, email addresses, and split names in your browser. 100% private - your data never leaves your device. GDPR compliant data cleaning for UK businesses. Try free example page.

Phone numbers, postcodes, NI numbers, sort codes — validated instantly. Your data never leaves your device. Phone numbers in every format. Postcodes with no spaces. NI numbers in lowercase. One export from your CRM, another from a survey — same data, five different styles. Manually fixing it means find-and-replace, copy-paste, and hoping you didn’t miss a typo. That’s why we built Simple Data Cleaner. Select your information and it validates, normalises, and formats everything to UK standards. And you can’t just upload this anywhere. Postcodes, NI numbers, customer details — it’s sensitive. Other tools upload your data to their servers. That means data processing…from simple-data-cleaner.com

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