Spreadsheets and data

Free Spreadsheet Duplicate Row Finder.

Duplicate groups preserving original row references.

Find duplicate groups in the supplied rows while preserving the references needed to resolve conflicting values.

Chrome extension + account required.
25 free automation tasks/month across tools. Browser-provider limits apply.

WHAT TO HAVE READY

Supplied table and matching keys.

YOUR STARTING POINT

A task you can make yours.

Copy it here. Paste it into WebAct when you are ready.

This page prepares your prompt. The task runs in WebAct.

01

Make the task yours.

Review the prompt above. Add your goal and any requirements that matter.

02

Bring it to WebAct.

Open WebAct, paste the task and provide the data and rules. Review any proposed calculation or code action before approving it, then check a known example.

03

Check the useful part.

Check formulas, code and calculations against known inputs in the appropriate runtime. Review actions before execution and keep the original data available.

A PRACTICAL GUIDE

How to use the Spreadsheet Duplicate Row Finder.

Define duplicates by the fields that establish record identity. Keep original row references and do not merge conflicting values silently.

Make the workflow fit your task.

Choose the columns that define a duplicate and whether case or surrounding spaces count. Group matching records with their original row numbers. Distinguish identical copies from records sharing a key but disagreeing elsewhere, and keep conflicts available for review.

What you provide
Supplied table and matching keys.
What you get
Duplicate groups preserving original row references.

See the input and the result.

Illustrative input and output · a teaching example, not a live WebAct run

Example input

Compare exact order_id values. Source rows: row 2: O12, USD 100; row 3: O13, USD 50; row 4: O12, USD 105. Keep source references.

Completed example

Duplicate-key group O12:
- Row 2: USD 100
- Row 4: USD 105
Classification: conflicting amounts, difference USD 5.
Row 3 has no duplicate key in this input. No rows removed; an owner must resolve the conflict.
Download this example

Load this input into the prompt, then copy it to WebAct to try the task. Your result may differ from the illustration.

Decisions and troubleshooting.

Should repeated customer names count as duplicate records?

Names alone rarely establish identity. Use the appropriate record key and supporting fields for the dataset.

Why did removing duplicate IDs lose a newer value?

The rows may have represented conflicting updates. Review timestamps and field differences before deciding which record, if any, to retain.

Try it with your own source.

Replace the example with your material in the task prompt. Keep the requirements you need, then copy the task into WebAct.

Customize and copy the task ↑
BEFORE YOU BEGIN

Using WebAct.

The prompt and example are available here. Run your task in the WebAct Chrome extension.

Is this tool free?

You can copy and edit the prompt here for free. To use it with WebAct, install the Chrome extension, create and verify your account, and connect an available browser ChatGPT session. The Free plan includes 25 user-started automation tasks per calendar month, shared across tools. Ordinary browser Chat is separate; provider limits apply.

Learn about shared context in our privacy policy and choosing Chat or Task.

FROM A PROMPT TO YOUR OWN WORK

Bring the task to your page.

Install WebAct, add your source material and make the result yours.

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