What encodings can be converted?

Windows-1252, ISO-8859-1, Latin-1, MacRoman, Shift-JIS, and most legacy encodings.

How is encoding detected?

The tool uses byte-order marks and statistical pattern matching.

No. Everything runs locally in your browser.

Process files up to the browser memory limit.

You can manually select the source encoding from a dropdown.

Detect and fix character encoding issues in CSV files. Converts to clean UTF-8. Securely process files in your browser memory

Your files never leave your device. Processed locally. 100% private.

Unlocking Tool Engine...

Complete your task perfectly in just three straightforward steps.

Drop your CSV file with encoding problems.

The detected encoding is shown (e.g. Windows-1252, ISO-8859-1).

Download the file converted to clean UTF-8.

Everything you need to know about the Encoding Fixer.

Continue working with our suite of free data utilities.

Mask or replace PII in CSV files. Replace names, emails, and phone numbers with anonymised values. The safest way to process

Extract data from CSV columns using regular expressions. Capture groups to new columns. Processed entirely in your browser fo

Remove duplicates, fix nulls, trim whitespace, and standardize formats in one pass. Fast, private, and secure browser-based t