Data Overview

See what is really in a table before you work on it: types, missing values, duplicates, distribution, outliers and correlations. Nothing is uploaded.

Your data never leaves this browser

The file is parsed, previewed and charted on your own device. Nothing is uploaded — not even a sample. Close the tab and the data is gone.

Or paste table text
Import a file to get started. Everything runs locally.

How it works

  1. 1.Import the table you want to understand (Excel, CSV, TSV or JSON, or paste).
  2. 2.Press Analyse the table — every row and column is read locally, so a large file takes a moment.
  3. 3.Read the per-column report: type, filled and missing counts, distinct values, min, max, mean, median, quartiles, standard deviation and IQR outliers.
  4. 4.Scroll to the correlations between numeric columns, then export the whole report as CSV or Excel.

Frequently asked questions

Do I get free credits to try Data Overview?
Yes — new accounts get 3 free credits to spend on any tool, Data Overview included. After that you only pay for what you run.
How many credits does Data Overview cost?
Everything runs in your browser and nothing is uploaded: free accounts pay 1 credit per run, and Pro or Pro+ members run it as often as they like.
Is the content I paste private?
Data Overview uses your input only to generate the result. Stored results are deleted automatically by our retention policy, and you can remove any run from your history.
Do I need to install anything?
No. Data Overview works in any modern browser — nothing to download or install.