Question 1

What cleaning operations does this tool perform?

Accepted Answer

The tool offers multiple cleaning options: remove duplicate rows, trim leading/trailing spaces, delete empty rows, delete empty columns, standardize text case (uppercase, lowercase, title case), remove special characters, and fix number formatting.

Question 2

Is my data secure?

Accepted Answer

Yes, 100% secure. Your files are processed entirely in your browser using JavaScript. No data is ever uploaded to any server. Your spreadsheets never leave your computer.

Question 3

What file formats are supported?

Accepted Answer

The tool supports Excel files (.xlsx, .xls) and CSV files (.csv). You can upload any of these formats and download the cleaned data as Excel (.xlsx) or CSV.

Question 4

Is there a file size limit?

Accepted Answer

The tool works best with files up to 10MB. Larger files may be slower to process depending on your device. For very large datasets, we recommend using ElyxAI directly in Excel.

Question 5

How does duplicate removal work?

Accepted Answer

You can choose to check all columns or specific columns for duplicates. The tool keeps the first occurrence and removes subsequent duplicate rows. A summary shows how many duplicates were found and removed.

Question 6

Can I preview changes before downloading?

Accepted Answer

Yes! After cleaning, you see a detailed summary of all changes made: number of duplicates removed, spaces trimmed, rows deleted, etc. You can also preview the first 10 rows of the cleaned data.

Question 7

Is this tool really free?

Accepted Answer

Yes, completely free with no limitations. No signup, no credit card, no hidden fees. You can clean as many files as you need.

Question 8

What browsers are supported?

Accepted Answer

The tool works in all modern browsers: Chrome, Firefox, Safari, Edge. It also works on mobile devices, though we recommend using a desktop for large files.

Question 9

Can I undo the cleaning operations?

Accepted Answer

The original file is never modified - we create a new cleaned version. You can always re-upload your original file and apply different cleaning options.

Question 10

Does the tool preserve formulas?

Accepted Answer

The tool processes cell values, not formulas. If your Excel file contains formulas, they will be converted to their calculated values in the cleaned output. For formula preservation, use ElyxAI directly in Excel.

Question 11

How does text standardization work?

Accepted Answer

You can convert text to UPPERCASE, lowercase, or Title Case. You can apply this to all columns or select specific text columns. Number and date columns are automatically skipped.

Question 12

What happens to my formatting (colors, fonts)?

Accepted Answer

The tool focuses on data cleaning and does not preserve cell formatting like colors, fonts, or borders. The downloaded file contains clean data with default formatting.

Free Excel Data Cleaner

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