PunkFix

Remove Control Characters

Strip null bytes and other invisible control characters. 100% private—your data stays in your browser.

No uploadsNo signupInstant results
1

Upload Your File

Drop a CSV with invisible or problematic characters.

2

Character Sanitization

We remove null bytes, form feeds, and other control characters.

3

Download Clean CSV

Get a file that won't break import processes.

Click to upload or drag & drop

Supported files: CSV, TXT, JSON (Max 20MB)

Drop your file here

or click to browse

Files with null bytes, escape characters, or non-printable characters.

Max 20MB 100% Private

What This Tool Does

This tool strips out invisible ASCII control characters (0-31) that often creep in from database dumps or binary file conversions, causing import failures.

How It Works

1Upload the file containing dirty data.
2The tool filters out all non-printable ASCII characters.
3Preserves newlines and standard tabs.
4Download the clean, printable text file.

Input Format

Files containing binary garbage or control codes.

Output Format

Clean plain-text CSV.

When to Use This Tool

  • Your import fails with 'Invalid Character' errors.
  • Copy-pasting data seems to carry invisible junk.
  • You are cleaning up database exports.

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