Free online tool

Dimensionality Reduction Explorer

Turn many number columns into a 2D PCA chart. Explore patterns and see how much of the data's variation the chart keeps.

Runs on a separate serverNo account neededCSV / PNGOpen workspace ↓

What does a PCA chart show?

PCA turns several number columns into fewer new axes that keep as much variation as possible. This tool draws the first two axes. Check the reported share of variation to see how much detail the 2D chart keeps.

Your input

0 characters

This tool sends your input to a separate processing service. Temporary job files are deleted when processing ends. Only send content you are comfortable uploading.

Separate processing · Automatic file cleanup

Your result

A little clarity, right here.

Start with your own content or load the example. Your result will appear here.

Three simple steps

How to use Dimensionality Reduction Explorer

  1. Choose your input and adjust the options.

  2. Review the preview and run the tool.

  3. Download the result and keep your original.

Common questions

Good to know

Understand the result.
Keep the original.

Is this tool free, and are my files uploaded?

This tool is free with no account required. When you run the tool, your input goes to a separate processing service. Temporary files are deleted when the job ends. You can download the result to your device.

What are the limits and details?

All selected columns must be numeric with no missing or infinite values. Up to 10,000 rows and 100 columns. A two-dimensional projection can hide structure and does not prove clusters exist.

Limits: one file up to 8 MB; 500,000 characters per text field. One job runs at a time on the worker, with a two-minute limit.