DataTools

Local-first · No account required

Work with tabular data,
right in your browser

Paste a spreadsheet, upload a CSV, or drop an Excel file. Transform it, analyze it, chart it, and export to the format you need — HTML, PDF, Excel, JSON, and more.

18 tools, one workflow

How it works

  1. 1
    Paste or upload

    CSV, TSV, JSON, Excel, or pipe-delimited text. Drag-and-drop supported.

  2. 2
    Configure

    Pick separators, trim cells, filter rows, choose columns, or set chart options.

  3. 3
    Export or share

    Download files, copy to clipboard, or open exports in a new tab.

Runs locally Data stays in your browser — nothing is sent to a cloud service.
Flexible parsing Auto-detect delimiters or set custom column and row separators.
Draft recovery Your work is saved to localStorage so you can pick up where you left off.
Light & dark Theme preference syncs across all DataTools apps.