Tools for Data Cleaning & Preparation

Automatically remove empty rows, trim cell whitespace, and normalize text case in any CSV file. Sign up free — no credit card needed.

Remove duplicate rows from CSV files instantly. Upload your file, choose key columns, and download a clean dataset. Free account, no card required.

Pull any single column from a CSV into a clean text list instantly. Perfect for data cleaning workflows. Free account, no card required.

Remove irrelevant rows from messy CSVs instantly. Filter by exact match, contains, or starts-with — free account, no card required.

Merge CSV exports from multiple sources into one file before cleaning. Auto-aligns columns, preserves all rows. Free to use — sign up with Google.

Standardize mixed date formats and inconsistent numeric values across CSV files automatically. Get analysis-ready data fast. Free account, no card required.

Strip unwanted columns from CSVs instantly. Perfect for data cleaning workflows — remove internal IDs, nulls, and noise before analysis. Free account required.

Sort CSV rows by any column — numeric or alphabetic — in seconds. Free to use with a Deliteful account. Clean and order your datasets fast.

Break oversized CSVs into manageable chunks before cleaning. Each output file keeps the header row so your cleaning scripts run without modification.

Convert CSVs to Excel as a first step in data cleaning and preparation. Get raw data into Excel fast so you can filter, sort, and clean without import friction.

Automatically delete blank rows, blank columns, and trim whitespace from Excel files. Free account — upload and download a clean spreadsheet in seconds.

Combine fragmented Excel sheets from multiple sources into one flat file before running data cleaning and normalization workflows. Free to start.

Merge multiple Excel files and strip duplicate rows by key columns. Get one clean, analysis-ready dataset without writing a single formula.

Clean messy Excel datasets fast: remove duplicate rows by column or full-row match. Perfect for data prep workflows. Free Deliteful account, no card needed.

Fix inconsistent Excel headers before analysis. Convert to lowercase snake_case in one click. Free Deliteful account gets you started with no card required.

Drop irrelevant, duplicate, or legacy columns from Excel datasets before analysis or import. Name the headers, upload the file, done. Free account required.

Convert Excel files to UTF-8 CSV before cleaning. Remove formatting noise, resolve formulas, and feed structured data into pandas, R, or OpenRefine.

Convert messy Excel and CSV files to JSON as a first step in your data cleaning workflow. Structured array output per row. Free Deliteful account required.

Compact JSON files before loading into cleaning tools or scripts. Strip whitespace, preserve all values. Free Deliteful account with Google.

Convert raw JSON datasets to Excel for cleaning, filtering, and review. Supports arrays and NDJSON. Free account, no card, Google sign-in.

Extract text from PDF sources into HTML before cleaning and transformation. Sign up free with Google, batch convert up to 50 PDFs.

Extract raw text from PDF source files as the first step in data cleaning and preparation pipelines. Free Deliteful account. Batch up to 50 PDFs.

Convert XML source files to JSON as the first step in your data cleaning workflow. Batch process up to 50 files free with Deliteful.