Paste or upload a CSV to view it as a table, with checks for duplicate headers, malformed quotes and inconsistent rows.
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The CSV Viewer/Validator lets you paste or upload a CSV file, renders it as a table, and lists formatting diagnostics — all processed locally.
No — overflow cells are always rendered in the table (as unlabeled columns) and flagged in the diagnostics list; they are never silently dropped.
Input is capped at 500,000 characters with a friendly message if exceeded; the table itself is paginated, so the whole CSV is never rendered into the page at once.
Auto-detect, or manually choose comma, tab, semicolon, or pipe (|).
Cells beyond the header width are never silently discarded — they render as unlabeled columns and are highlighted. Everything is parsed locally in your browser.
