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Product guide · 5 min read

From Excel to the browser: how TSV paste maps into CSV grids

Clipboard TSV from spreadsheets maps to cells; row/column expansion rules and alignment pitfalls.

Published March 21, 2025 · Table

Excel and Sheets copy as TSV on many platforms. Pasting into a browser grid should align tab-separated columns to adjacent cells and optionally extend the table when the paste is larger than the selection.

Watch for

  • Embedded newlines inside quoted Excel cells becoming extra rows.
  • Locale-formatted numbers pasting as text.

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