Data Summarizer
Aggregate CSV data by group: SUM, COUNT, AVG, MIN, MAX across any column. The safest way to process sensitive data with zero-
Your files never leave your device. Processed locally. 100% private.
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How To Use Data Summarizer
Complete your task perfectly in just three straightforward steps.
Upload CSV
Drop your CSV file.
Choose group and value columns
Select the grouping column and value columns to aggregate.
Download
Download the summarized CSV with SUM, COUNT, AVG per group.
FAQ
Everything you need to know about the Data Summarizer.
What aggregations are supported?
SUM, COUNT, AVG, MIN, MAX, and DISTINCT COUNT.
Can I group by multiple columns?
Yes — select multiple grouping columns for compound grouping.
Is my file uploaded?
No. Everything runs locally in your browser.
File size limit?
Process files up to the browser memory limit.
Is this the same as a pivot table?
Similar — Summarizer outputs a flat grouped aggregate. Pivot Engine creates cross-tab views.
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