Data Tools
25 free browser tools
Convert, split, compare, clean, and validate CSV, Excel, XML, JSON, and spreadsheet-style files locally.
CSV to Excel
Paste or upload CSV and download an XLSX workbook that opens in Excel or Google Sheets.
Split Excel
Upload a multi-sheet XLSX file and download a ZIP with one workbook per sheet.
XML to Excel
Paste or upload XML and download an XLSX file with repeated records as rows.
Split CSV
Split a large CSV into smaller CSV files by row count in a local browser worker.
JSON to XML
Paste JSON and download formatted XML with object keys converted to tags.
Excel to CSV
Upload XLSX and download CSV files, with multi-sheet workbooks packaged as a ZIP.
XML to CSV
Paste or upload XML and download a CSV with repeated records flattened into rows.
CSV to JSON
Paste or upload CSV and download formatted JSON objects built from the header row.
Excel to XML
Upload XLSX and download XML files, with one XML file per worksheet when needed.
XML to JSON
Paste or upload XML and download readable JSON with repeated tags grouped as arrays.
CSV to XML
Paste or upload CSV and download XML where headers become tags and rows become records.
JSON to CSV
Paste JSON and download a CSV with object keys turned into column headers.
Unix Timestamp Converter
Convert epoch timestamps to readable dates, or turn date-time values into Unix seconds and milliseconds.
CSV to TSV Converter
Quickly convert between CSV and TSV formats and copy the result.
HTML Table to CSV Converter
Turn copied HTML table markup into CSV rows you can paste into spreadsheets or import tools.
Markdown Table to CSV Converter
Convert Markdown table rows from docs, GitHub issues, or AI drafts into clean CSV.
CSV to SQL Insert
Turn a CSV snippet into copyable SQL INSERT statements for quick seed data, demos, and database tests.
CSV Row and Column Counter
Profile pasted CSV data before importing it into spreadsheets, ecommerce platforms, CRMs, or databases.
CSV Filter Rows Tool
Filter CSV rows by a simple column rule before sending smaller, cleaner data to another spreadsheet or import workflow.
CSV Column Cleaner
Paste a CSV, keep only selected columns, and download the smaller CSV.
CSV Diff by Key
Compare two CSV files by a key column and see added, removed, and changed rows.
CSV Merge by Key
Join two CSV tables by a shared key and download the merged rows.
CSV to Markdown Table
Paste CSV and copy a Markdown table for docs, READMEs, or tickets.
Batch File Renamer & ZIP Export
Rename many files with a pattern, preview the names, and download renamed copies in a ZIP.
ZIP File Manifest Viewer
Upload a ZIP and list its files, folders, sizes, and hidden entries before sending it.