Rules first, AI only when needed
Duplicates, blanks, date formats, whitespace, type mismatches, and outliers are diagnosed with deterministic rules.
CleanCSV AIInstant spreadsheet cleanup
Clean ugly CSV and Excel data without touching formulas.
Upload messy data, inspect every quality problem, choose the fixes you want, and download a cleaner file with a full change log.
Duplicate rowsEmpty cellsMixed data typesDate format driftWhitespace mismatchesBroken column namesOutlier values
See Pro pricing
Free tier: files up to 1 MB and 5 analyses per day.
Upload a messy spreadsheet
Supports CSV, TSV, XLSX, and XLS. Current plan: Free with files up to 1 MB and 5 analyses per day.
CSV, TSV, and Excel in one flow
Upload a messy spreadsheet, inspect the issues, choose fixes, and export clean output in seconds.
Built for operations teams
See exactly what changed with row counts, change logs, before/after previews, and downloadable files.
How it works
From raw upload to clean export in one pass.
The first release is optimized for deterministic cleanup. AI only steps in when the issue needs a judgment call.
01
Upload the raw file
Drop in CSV, TSV, XLSX, or XLS. Files are parsed into one internal data model.
02
Review a diagnostic report
Each issue includes severity, impacted rows, example values, and whether it can be auto-fixed.
03
Export the cleaned result
Choose which fixes to apply, preview the outcome, then download cleaned CSV or XLSX.
Shipping scope for the first build
Built to match the project spec from day one.
The current implementation focuses on the product core: parser, diagnostics, fix engine, report UI, exports, pricing, and the full SEO page set from the launch plan.
Rule-based diagnostics for 11 issue types
One-click fix flow with before/after preview
CSV and XLSX export generation
Creem or Stripe billing, plus Upstash and OpenAI integration points
Programmatic SEO landing pages
Vercel-friendly Next.js 14 App Router setup
Popular cleanup intents
Descriptive internal links for the jobs users actually search.
remove duplicates csv
Remove Duplicate Rows from CSV Online
Upload a messy CSV, detect duplicate rows instantly, and export a cleaner file without rewriting formulas or scripts.
fix date format csv
Fix Inconsistent Date Formats in CSV
Standardize mixed date formats like YYYY-MM-DD and MM/DD/YYYY into one clean export-ready format.
missing values csv
Handle Missing Values in CSV Data
Detect empty cells, understand which columns are affected, and fill missing values before you export clean data.
trim whitespace csv
Remove Extra Spaces from CSV Data
Trim leading and trailing whitespace that silently breaks joins, lookups, deduplication, and imports.
detect outliers csv
Detect Outliers in CSV Data
Spot unusual numeric values in your CSV before they distort reports, forecasting, or analytics workflows.
csv encoding fix
Fix CSV Encoding Issues Online
Detect suspicious encoding artifacts in CSV text before they break imports, names, or downstream reporting.
number format csv
Standardize Number Formats in CSV
Normalize currency symbols, thousands separators, and inconsistent numeric strings before importing data into BI or ops tools.
validate email csv
Validate Email Addresses in CSV
Find broken email addresses in CSV columns before sending campaigns, syncing CRMs, or importing contacts.
split column csv
Split Combined Columns in CSV
Learn how to split packed values like full names or addresses after diagnosing the data structure in CleanCSV.
merge csv columns
Merge CSV Columns Safely
Understand how to combine multiple CSV columns after cleaning formatting issues that would otherwise create bad merged output.
Best for fast CSV cleanup
Use CleanCSV to catch duplicate rows, blank cells, and whitespace issues before imports fail.
Deterministic by default
Most data quality checks run without AI, so results stay repeatable across uploads and teams.
Ready for ops and analytics
Export cleaned CSV or XLSX output with a change log you can hand to finance, ops, or BI teams.