neatcsv
Clean messy CSV, Excel & JSON files in seconds
neatcsv launched on February 26, 2026 with 2 votes, #6,501 of 16,628 launches that month.
What it does
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.
Clean your CSV, Excel and JSON files in seconds. 14+ cleaning tools: duplicates, dates, emails, numbers, whitespace and more. Export as CSV, Excel or JSON. 100% private.
Upload CSV, Excel or JSON – clean with 14+ tools – export in your preferred format. 100% private processing. Pay only for the rows you clean. From duplicates to date formats – clean any CSV, Excel or JSON file with our comprehensive toolset. Find and remove duplicate rows based on any column. Case-insensitive options. Validate email syntax, fix common typos (gmial→gmail), flag invalid domains. Convert dates to ISO 8601 (YYYY-MM-DD) from 30+ formats. Auto-detect US/EU dates. Remove 35+ currency symbols, convert formats (US/EU/Swiss), round decimals. Trim leading/trailing spaces, remove tabs, normalize line breaks, collapse multiple spaces. Convert to uppercase, lowercase, title…from neatcsv.com
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CSV CleanerFeb 2026 · csv-cleaner.com · ▲3Hi HN, I built a small utility to clean up messy CSV exports without opening Excel or writing pandas scripts. Upload a CSV → preview → choose columns to dedupe → normalize/trim → download the cleaned file. Free tier, no signup required for basic use. Stack: -Lovable for the app -Supabase (auth, Postgres, storage, edge functions) -Stripe for subscriptions/day passes Processing runs server-side; I kept the architecture intentionally simple and low-ops. Would love feedback on UX, edge cases, or features you’d want. Website: https://csv-cleaner.com/
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