Free Tool
Dataset Documentation Generator
Upload a CSV and automatically generate a complete data dictionary: column names, inferred data types, completeness statistics, unique value counts, min/max for numeric fields, and sample values. Download the result as CSV.
Files never uploaded
Downloadable CSV output
Auto type inference
Your data never leaves your browser. Documentation is generated locally. No files are uploaded, stored, or transmitted.
Drop your CSV here, or click to browse
Accepts .csv, .tsv, and .txt files. Processing stays on your device.
CSVTSVTXT
Generating data dictionary…