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Files and columns

Large file performance

What to expect with 10k, 50k, and larger spreadsheet workflows.

Users running large BOM, quote, or price filesUpdated May 10, 2026

Common questions this answers

  • How large can my file be?
  • Why is the browser slow?
  • Will exports include all rows?

Browser-local tradeoff

Browser-local processing protects raw source files by default, but the browser still has memory and performance limits. Large spreadsheets can take longer to parse, compare, and render.

Practical tips

  • Use CSV for very large files when possible.
  • Close heavy browser tabs before running a large comparison.
  • Use filters and exception-first review instead of scrolling every row.
  • Exports should include the full result even when the visible table is batched for performance.

When to ask for help

If a normal export consistently fails, contact support with the workflow, file type, browser, approximate row count, and the step where it failed. Do not send raw files through the support form.