Turn Raw CSV Data Into Actionable Insights

Upload a dataset, discover data-quality issues, explore patterns, and generate insights — all in one place.

Upload CSV / XLSX

Works entirely in your browser — your data never leaves the device.

students.csv · 1,250 rows

Rows

1,250

Missing

12.4%

Quality

Missing values / column

6 columns

Study Hours ↔ Exam Score

Strong positive linear relationship

r = 0.78

Data Profiling

Understand columns, data types, distributions, and dataset structure.

Data Quality

Detect missing values, duplicates, inconsistent data, and potential problems.

Exploratory Analysis

Explore relationships and patterns through interactive charts.

Automatic Insights

Get useful observations generated from the dataset automatically.

How it works

A five-step journey, no setup required

Upload

Drop a .csv or .xlsx file

Profile

Auto-detect types

Clean

Fix issues safely

Explore

Build visualizations

Understand

Read insights

About DataLens

A clearer view of every dataset

DataLens brings profiling, quality checks, exploratory analysis, predictions, and careful cleaning into one private workspace. Your raw CSV or Excel file stays in the browser while each finding remains traceable to computed evidence.

CSV document viewed through an analytics magnifying glass