File Name Case Converter

Convert file names to different cases while preserving extensions

Case Format

Enter one file name per line. Extensions will be preserved.

Use Cases

📝
Standardize File Naming

Convert all files to consistent case format.

🔗
Web URL Preparation

Convert files to lowercase for web URLs.

💼
Professional Organization

Apply title case for professional documents.

🔤
Case Correction

Fix inconsistent naming across file collections.

How to Use

  1. Enter Filenames: Paste one filename per line
  2. Select Case Style: Choose lowercase, uppercase, title case, or sentence case
  3. Review Results: See before/after comparison instantly
  4. Copy and Apply: Copy converted names to use in your system

How It Works

  • Lowercase Conversion: All characters to lowercase (myfile.txt)
  • Uppercase Conversion: All characters to uppercase (MYFILE.TXT)
  • Title Case: First letter of each word capitalized (My_File.txt)
  • Extension Preservation: File extensions always preserved correctly
  • Batch Processing: Convert multiple filenames at once
  • Real-time Preview: Instant conversion display

Frequently Asked Questions

Will my file extensions be changed?

No, extensions are always preserved in their original form.

Does this modify my actual files?

No, the tool only generates new names; you apply them manually.

What's the difference between Title Case and Sentence Case?

Title Case capitalizes first letter of each word; Sentence Case only first letter.

Can I process many files at once?

Yes, paste as many filenames as needed, one per line.

Is my data private?

Yes, all processing happens in your browser; no data is stored.