CSV column review
Review CSV column mappings.
Review mapped, unmapped and duplicate column targets before saving a converted CSV or review JSON. Processing stays in this browser.
Review CSV
Target column names
Blank targets are unmapped; repeated targets are duplicates.
| # | Source | Target | State |
|---|
| First rows | Value |
|---|
Enter CSV, then load its columns.
Limits: 10 MiB / 10,000 rows / 100 columns / 500,000 cells. No server, URL or analytics payload.
What is checked
- Quoted commas, quoted newlines and common line endings are preserved.
- Each target is reviewed and unmapped or duplicate targets stay visible.
- Downloads happen locally only after you press a save button.