Data readiness checker
Open a CSV file from your own computer and see how ready it is for analysis: what is missing, what looks inconsistent, and what to fix first. The file is read inside this page and is never uploaded.
1. WHAT KIND OF DATA IS IT?
Sets which columns the checker looks for
Starting value is an assumption. Set the history your analysis needs.
2. OPEN A FILE
CSV or text file, UTF-8. One table at a time.
Drop a CSV file here, or choose one.
The file stays on your device. Large files: the first 500,000 rows are checked, and the page tells you if that applies.
3. RESULT
COLUMN MATCHING
Check the suggested match for each role and change it if needed
| What the analysis looks for | Column in your file | Needed? |
|---|
READINESS CHECKS
Indicators that require verification
| Check | Column | Result | Detail |
|---|
WHAT TO LOOK AT FIRST
Generated from the checks above
ALL COLUMNS
Profile of every column in the file
| Column | Looks like | Filled | Distinct values | Lowest | Highest | Notes |
|---|
The downloads contain column names, counts and lowest and highest values for numeric and date columns that are not identifiers. They contain no individual rows.
This tool checks the shape and quality of a data file. It does not detect or confirm loss, fraud or theft, and it says nothing about any customer or person. Starting values and thresholds are general assumptions. Results are indicators that require verification and human review. If your file holds personal data, follow your own data protection rules before opening it on any device.