DRDATARead
✦ Free tools · Open source · No account

Make your data work smarter.

Practical, free online tools to clean datasets, check data quality, calculate statistics, build quick charts and convert files. Simple enough to start in seconds.

Open free tools How your data stays private
DataRead quick viewSample data
RegionOrdersRevenue
North248₹84,500
South192₹71,200
West316₹96,800
756Rows checked
0Uploads to server
6Free tools
✓ Free to use
⌁ Runs in your browser
◇ No account required
⌘ MIT-licensed code
The free toolkit

Useful tools. No paywall.

Choose a tool to jump straight to the workspace. You can also load the sample dataset to try everything without preparing a file.

Your data workspace

Load a CSV, TSV, TXT or JSON file, or start with the built-in example.

Processed locally in this browser
No dataset loaded yet.

Apply cleaning steps to the dataset currently in memory. Export a cleaned copy when finished.

Cleaning changes the working copy in this browser. Your original file on your device is not modified.

A quick overview of completeness and repeated records in the loaded dataset.

Load a dataset to beginYour data quality summary will appear here.

Select a numeric column to calculate descriptive statistics. Values that cannot be read as numbers are ignored.

No statistics yetLoad a dataset and select a numeric column.

Build a basic bar chart showing the sum for each category. The chart is drawn locally and can be downloaded as an SVG image.

Your chart will appear here.

Convert the current table to CSV or JSON. JSON output is an array of objects using the column names as keys.

Conversion preview

Load a dataset to see the converted output.

Create a masked working copy by replacing every value in one selected column. Export the result when ready.

Masking one column does not guarantee anonymity. Review the full dataset for indirect identifiers and sensitive combinations before sharing it.
No column has been masked in this session.

Dataset preview

No data loaded
Your workspace is readyChoose a file above or load the sample dataset to explore the tools.
Privacy first

Your files stay on your device.

The tools on this page are designed to run in your browser. The page does not send selected datasets to a DataRead server or an external processing API.

⌂Local processing

Files are read by your browser. Cleaning, calculations, conversion and chart creation happen on your device.

⊘No account or upload

No sign-up, database, paid API or server-side dataset processing is needed to use these tools.

↧You control exports

Nothing is saved by this page as a cloud project. Download the result when you want to keep it.

Privacy note: your web host necessarily delivers the page files and may maintain ordinary website access logs. This page itself does not transmit the data file selected in the workspace.
Good to know

Frequently asked questions

Are these tools really free?

Yes. This page has no paid API, subscription, account system or server-side processing requirement. You can host it as a static website on a free hosting plan subject to that provider's limits.

Are my uploaded files sent online?

No. The file is read by your browser and processed in the current page session. It is not uploaded by this page. Avoid using a shared or untrusted device for confidential information.

Which files are supported?

CSV, TSV, plain-text delimited files and JSON arrays of objects. Very large files may be limited by the memory and performance of your device and browser.

What does the open-source licence cover?

The original page source is released under the MIT License included with this package. No third-party JavaScript libraries are required or bundled.

Does this replace professional analytics software?

No. These are lightweight utilities for common tasks. Use a validated analytical workflow for regulated, high-impact or business-critical decisions.

Can I use these tools on a phone?

The page is responsive and can be opened on a phone, but larger datasets are easier to inspect on a desktop or laptop.