Missing Value Explorer
Upload a CSV, or try the sample: see exactly what's missing, and one reasonable way to handle it.
Your file is processed entirely in your browser. It is never uploaded anywhere.
What is happening?
For a numeric column, filling gaps with the median is a common, defensible default: it doesn't get pulled around by outliers the way a mean does. For a text column, the most frequent existing value is shown, but that's a much weaker default; missing categorical data is often better flagged for manual review than silently filled.
Under the Hood
CSV parsed in-browser↓Missing rows located per column↓Numeric → median suggested; text → most frequent value shown
Inputs
- Any CSV with a header row
Processing
- Per-column missing detection
- Median (numeric) / mode (text) computation
Output
- Missing count, missing rows, suggested fill
Technology
- Vanilla JavaScript, FileReader API
Explore another experiment
More Playground experiments are on the way.