How to guess the delimiter of a CSV sample

1. Paste a CSV sample

   Drop the first few lines of your CSV into the "Sample" field. A single line with column headers is usually enough — the detector only looks at the first non-blank line.

2. What it counts

   The tool counts occurrences of comma, semicolon, and tab in that first line and ranks them. Pipes (`|`), spaces, or custom delimiters are NOT considered.

3. Press Run

   Result returns counts (per-delimiter occurrence count), likelyDelimiter (the winner), and hint (`heuristic` when there was clear separation, `ambiguous` when all counts were 0).

4. When to override

   On lines with quoted fields containing the candidate delimiter (e.g. `"hello, world"`) this naive count overestimates. For tricky CSVs feed a couple of data lines instead of just the header.