Work with data files
right in your browser.
Convert, clean, transform, compare, merge, summarize and query CSV, Excel, JSON and Parquet files. Save your cleanup steps and re-run them next month. No sign-up, no uploads, no limits.
- Files never leave your device
- No account needed
- Real SQL engine built in
File converter
CSV, Excel, JSON, Parquet, SQL and more. Any to any.
Open convert →Data cleaner
Trim spaces, fix headers, blank out "N/A", drop empty rows.
Open clean →Transform & recipes
Rename, split, combine, fix dates and numbers, filter and sort. Save the steps and re-run them next month.
Open transform →Remove duplicates
Find and remove duplicate rows by any set of columns.
Open dedupe →Compare two files
See which rows were added, removed or changed between two versions of a file.
Open compare →Merge & join
Stack many files into one, or join two files on a key.
Open merge →File splitter
Break a big file into chunks or by a column value.
Open split →Summarize & pivot
Group rows and get counts, sums and averages, or a pivot table, without writing formulas.
Open summarize →SQL on files
Query your files with real SQL, powered by DuckDB.
Open SQL →Data profiler
Column types, blanks, distinct counts and top values.
Open profile →Private by design
Nothing is uploaded
Your browser reads the file and does the work. There's no server on the other end receiving your data, so customer lists, financials and exports stay with you.
Fast on real files
Handles files with hundreds of thousands of rows. The SQL tool uses DuckDB, the same analytics engine data teams run on servers, compiled to run in your tab.
Keeps your data intact
Values are kept as text by default, so ZIP codes, account numbers and IDs with leading zeros don't get mangled the way spreadsheets often do.