Duplicate Analysis Analyzer Online

Delimiterdetected: ","

Input CSVCSV136bytes

Total rows6

Unique rows3

Duplicate rows3

Dupe groups2

Duplicated row	Occurrences	First seen
Alice \| alice@x.com \| NYC	3×	row 2
Bob \| bob@x.com \| LA	2×	row 3

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

What is Duplicate Analysis?

Duplicate Analysis Analyzer is a free, browser-based tool that helps you understand a dataset at a glance. Quantify exact and near-duplicates. 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 Duplicate 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 Duplicate Analysis?: Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Quantify exact and near-duplicates.
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 Duplicate 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.

Duplicated row

Occurrences

First seen

Alice | alice@x.com | NYC

3×

row 2

Bob | bob@x.com | LA

2×

row 3

What is Duplicate Analysis?

Frequently asked questions

How do I use Duplicate Analysis?

Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Quantify exact and near-duplicates.

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 Duplicate 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.