Text-Tools

Add Random Letters

Insert random letters after each letter.

100% Private - Your text never leaves your browser
0 chars · 0 lines
0 chars · 0 lines
Random letters per letter:

About Add Random Letters

Add random letters after each existing letter. This free online tool processes your text instantly in your browser - no data is ever sent to any server, ensuring complete privacy.

How to Use Add Random Letters

  1. Paste or type your text in the input field on the left
  2. The result appears automatically in the output field
  3. Adjust any options below the text fields if available
  4. Click "Copy Result" to copy the output to your clipboard
  5. Use "Download" to save the result as a text file

Features

  • ✓100% Free - No registration required
  • ✓Instant processing as you type
  • ✓Complete privacy - works offline
  • ✓No file size limits
  • ✓Works on all devices
  • ✓Download results as text file

Why Use Our Add Random Letters?

Unlike other online tools that require uploads or send your data to servers, our add random letters runs entirely in your browser using JavaScript. This means your sensitive text never leaves your computer, making it perfect for processing confidential documents, personal information, or any text you want to keep private. The tool is also lightning-fast since there's no network latency involved.

When to Use This Tool

Text Obfuscation

Obscure text by interspersing random characters to prevent simple reading.

Visual Noise

Create garbled or corrupted-looking text effects.

Testing Data

Generate noisy text data for testing text processing algorithms.

Puzzle Creation

Create letter-finding puzzles with hidden words in random letters.

Examples

Add After Each Letter

Text: Hi
HxizQ

💡 Random letters inserted after each original letter

Heavy Obfuscation

Text: Cat
Add: 2 letters each
Cabxytpq

💡 Multiple random letters per original

Word Still Visible

Text: Dog
DqoXgZ

💡 Original letters still present every other character

Common Mistakes to Avoid

⚠️

Original text completely hidden

Solution: Too many random letters make finding original impossible. Keep ratio low.

⚠️

Spaces also get letters

Solution: Space between words may get random letters added. Check space handling.

⚠️

Output very long

Solution: Adding letters doubles or triples text length. Account for output size.

Related Tools

View all tools

Add Random Words

Insert random words into text.

Introduce Errors

Randomly replace letters with typos.

Remove Random Letters from Words

Randomly remove letters from each word.