Column Analysis Analyzer Online

Delimiterdetected: ","

Input CSVCSV189bytes

Column report CSVCSV

column,type,nulls,null_pct,unique,min,max
id,integer,0,0.0,5,1,5
name,string,0,0.0,5,Alice,Eve
age,integer,1,20.0,4,28,41
signup,date,0,0.0,5,2024-01-05,2024-04-01
active,boolean,0,0.0,2,false,true
balance,float,1,20.0,4,12,420.5

Column	Type	Nulls	Unique	Min	Max	Sample
id	integer	0 (0%)	5	1	5	1
name	string	0 (0%)	5	Alice	Eve	Alice
age	integer	1 (20%)	4	28	41	34
signup	date	0 (0%)	5	2024-01-05	2024-04-01	2024-01-05
active	boolean	0 (0%)	2	false	true	true
balance	float	1 (20%)	4	12	420.5	420.50

Tip: use samples, upload, copy, download, and send-to actions inside the workspace where available.

What is Column Analysis?

Column Analysis Analyzer is a free, browser-based tool that helps you understand a dataset at a glance. Type, range, nulls for every column. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.

How to use Column Analysis

1Paste your data or drop a file (CSV or JSON).
2Read the generated summary — types, counts, distributions, and any issues found.
3Export the report, or send the data to another tool to act on the findings.

Features

Per-column types, nulls, uniques, and stats
Spot data-quality issues fast
100% client-side — no upload, fully private
Free with no account, no watermark, and no daily limit
Works on large inputs, limited only by your device's memory
Load a sample, then copy, download, or share your result

Common uses

Profiling an unfamiliar dataset before analysis
Quick one-off analyzer jobs without opening a heavy app
Preparing data before importing it elsewhere
Sharing a reproducible result with a teammate via a link

Frequently asked questions

How do I use Column Analysis?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Type, range, nulls for every column.
Is my data uploaded or stored anywhere?: No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
Is Column Analysis Analyzer free?: Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.
What's the maximum file size?: There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.
Do I need to install anything?: No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.

Column

Type

Nulls

Unique

Min

Max

Sample

integer

0 (0%)

name

string

0 (0%)

Alice

Eve

Alice

age

integer

1 (20%)

signup

date

0 (0%)

2024-01-05

2024-04-01

2024-01-05

active

boolean

0 (0%)

false

true

balance

float

1 (20%)

420.5

420.50

What is Column Analysis?

Frequently asked questions

How do I use Column Analysis?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Type, range, nulls for every column.

Is my data uploaded or stored anywhere?

No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.

Is Column Analysis Analyzer free?

Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.

What's the maximum file size?

There's no hard limit imposed by the tool. Because processing happens in your browser, the practical ceiling is your device's available memory — most everyday files work instantly.

Do I need to install anything?

No installs and no extensions — it runs entirely in your web browser and even works offline once the page has loaded.