Clean & transform data
Query files with SQL, search and filter rows, remove duplicates, find and replace within columns, and reshape tables. Every tool runs locally in your browser.
7 free tools · 100% client-side
- CSVSQL
DB in Browser
Load CSV files as SQLite tables and query them with SQL, including joins, without a server
- DataTable
Data Process
Search, filter, sort, and rearrange CSV, TSV, or JSON data, then export exactly the view you built
- DataUnique
Remove Duplicates
Remove duplicate rows from CSV, TSV, or JSON, matching on all columns or only the key columns you choose
- CSVCSV
Column Tools
Rename, drop, reorder, fill, split, combine, and cast columns in CSV, TSV, or JSON
- DataData
Find & Replace
Find and replace text in selected columns of CSV, TSV, or JSON, with regex and whole-cell matching
- JSONTable
Flatten JSON
Flatten nested JSON into CSV columns with dotted names, or nest dotted columns back into JSON
- SitemapCSV
Sitemap to CSV
Turn an XML sitemap or sitemap index into a CSV of URLs with lastmod, changefreq, and priority