Clean, merge, validate, and dedupe CSV files with browser-local tools. Source files stay on your device; signed-in dashboards only receive usage metadata.
Clean a CSV file online — remove empty rows, trim whitespace, deduplicate, and repair malformed rows. Free, browser-based, no upload.
Merge multiple CSV files online by matching headers by column name. Free for 2 files, Pro for 3+ files. Browser-based, no upload.
Run a CSV sanity check in your browser. Find row-width drift, type mismatches, duplicate headers, encoding issues, and empty cells.
Remove duplicate CSV rows by choosing a unique key column like Email, SKU, phone, or ID. Browser-based, no upload.
Select and delete any columns from a CSV file in your browser. Strip PII, internal codes, or unwanted fields before sharing. No upload required.
Drag-and-drop CSV columns into any order to match your import template. Browser-based, no upload, instant download.
Rename one or all column headers in a CSV file to match your target schema. Perfect for platform migrations. Browser-based, no upload.
Extract a specific number of rows from a CSV file — set a row limit and optional offset to sample, test, or batch data. Browser-based, no upload.
Transpose any CSV file online — swap rows and columns instantly for pivot-ready data. Browser-based, no upload required.
Convert text case in selected CSV columns — UPPERCASE, lowercase, Title Case, or Sentence case. Browser-based, no upload.
Remove leading and trailing whitespace from every cell in a CSV file. Fix hidden spaces causing import failures. Browser-based, no upload.
Delete all blank rows from a CSV file instantly. Cleans up exports with padding rows, copy-paste artefacts, or template gaps. Browser-based, no upload.
Search and replace any text or pattern across all CSV cells. Supports plain text, case-insensitive, and regex modes. Browser-based, no upload.
Remove special characters, emoji, and non-alphanumeric symbols from CSV cells. Fix encoding issues before database or system imports. Browser-based, no upload.
Split any CSV file into multiple smaller files by row count. Ideal for batch imports, quota chunking, or parallelising workflows. Browser-based, no upload.
Divide a CSV file into separate files based on the unique values in any column. Each group becomes its own CSV. Browser-based, no upload.
Combine two or more CSV columns into a single column with a custom separator. Merge first + last name, address parts, or any fields. Browser-based, no upload.
Identify and highlight duplicate rows in any CSV by key column. Download a marked CSV showing which rows are duplicates. Browser-based, no upload.
Sort a CSV file by any column in ascending or descending order. Supports alphabetic and numeric sorting. Browser-based, no upload required.
Filter CSV rows based on conditions in any column — equals, contains, starts with, greater than, and more. Browser-based, no upload.
Anonymize a CSV file in your browser — hash, mask, redact, sequential-replace, or drop PII columns. Auto-detects email, phone, and name fields. Free, no upload.
The guides index keeps the Shopify, Amazon, bank statement, inventory, lead-list, and accounting spoke pages separate from the direct tool launcher.
Use the JSON Hub for CSV→JSON (array, NDJSON, grouped output) and JSON→CSV (auto-flatten nested objects) — same browser-local privacy model as the CSV tools.
Each live CSV tool is built for a single job and runs in the browser: Cleaner normalizes messy files, Merger combines header-matched exports, Validator produces health reports, and Deduplicator removes repeat rows by a selected key column.