Convert between XLSX workbooks and CSV files preserving sheets and encoding. Move data across Excel and pipelines — local SheetJS work, unlimited saves.
Runs on SheetJS
Turn messy client CSV and Excel sheets into clean JSON arrays or keyed objects with column mapping. Developers convert 50 exports without hand-editing — local SheetJS work, 2 free batches a day.
Convert vCard contacts to CSV spreadsheets and back — migrate address books anywhere. Move 500 iPhone contacts to Google — local parsing, unlimited saves.
Convert CSV files into queryable SQLite databases in your browser. Turn 100k-row exports into SELECT-able tables — local sql.js work, unlimited saves.
Convert the first sheet of Excel workbooks to a plain-grid PDF — quotes, reports, price lists. Send a client quote that reads identically everywhere — local conversion, unlimited saves.
Stamp text watermarks across PDF pages — DRAFT, CONFIDENTIAL, custom text with opacity. Protect 50 filings before sharing — local pdf-lib work, unlimited saves.
One sheet per run — pick it in the Sheet dropdown (first sheet by default); multi-sheet workbooks need one pass each. Preview shows the first 20 rows; row ranges cap at All, 1–100, 1–500, or 1–1000; delimiters span comma, tab, semicolon, and pipe.
UTF-8 CSV out with no BOM; formulas export as computed values. Verify accented text after converting.
Yes — CSVs combine into worksheets with type inference. Formatting rebuilds manually; data transfers exactly.
No — conversion runs locally in your browser with SheetJS. Saves never touch a meter — downloads on local tools are unlimited.
CSV ↔ HTML Table Converter
Bidirectional converter between CSV data and HTML table markup with live preview. Files are converted locally in your browser — nothing is uploaded.
Import to CSV
Convert pasted tables, lists, and structured text into clean CSV rows. Turn copied web tables into spreadsheet data — local parsing, free, no signup.
TSV ↔ CSV Converter
Convert between tab-separated and comma-separated values with proper quoting. Move data between Unix tools and Excel cleanly — local conversion, free, no signup.
Column Extractor
Extract CSV columns by name into clean lists. Pull email and name columns from pasted CSV in seconds — local parsing, free, no signup.
Last updated October 2026