CSV viewer

• Delimiters — comma, semicolon, tab, pipe. Auto-detect uses field-count variance across the first ten lines.
• Quoted fields — wrap in double-quotes to embed delimiters, newlines or quotes (escape inner quotes by doubling).
• Line endings — Unix (LF) and Windows (CRLF) both work; the parser strips trailing CR before splitting.
• Header row — toggle on/off. With no header, columns get generic names (col1, col2…).

• Filter — case-insensitive substring match across all columns. Multiple words narrow further (the table updates as you type).
• Sort — click any column header. Numeric columns sort numerically; text uses locale-aware comparison.
• Click twice on a header to toggle ascending / descending.

• Excel CSV exports may start with a UTF-8 BOM (\uFEFF) — this becomes a stray character in column 1's first header. Strip it before pasting if you see it.
• Inconsistent column counts — rows shorter than the header show empty trailing cells; rows longer are truncated.
• Performance — table render slows above ~10,000 rows. Filter first or split.
• Encoding — we read uploaded files as UTF-8. Latin-1 / Windows-1252 files will look garbled; re-save as UTF-8 first.

When to reach for it. Use it to preview, sort and scan a CSV in a clean table before importing it somewhere that’s harder to undo.

When something else is better. It’s a viewer, not a spreadsheet engine — it won’t recompute formulas or pivot millions of rows.

The pitfall to watch. Delimiter and encoding guesses go wrong on European CSVs (semicolon-separated) and non-UTF-8 files — columns then collapse into one.

Your file stays in your browser. The document or image you choose is read with the browser’s local file APIs and processed in the tab (or a Web Worker). EpitomeTool does not upload the file bytes, the file name, or the result — nothing leaves your device, so there is no “wait for upload” step and nothing to delete from a server afterwards.