What is Text Obfuscation?
Text obfuscation makes text harder to read without proper decoding. Our tool offers 5 different obfuscation methods, from simple ROT13 to Morse Code encoding. Most methods are reversible, allowing you to both obfuscate and deobfuscate text.
Available Methods
🔄 ROT13 (Rotate by 13)
Simple letter substitution cipher that replaces each letter with the 13th letter after it in the alphabet.
- ✓ Reversible (applying twice returns original)
- ✓ Preserves case and non-letters
- ✓ Perfect for hiding spoilers
🔀 Reverse Text
Simply reverses the order of all characters in your text.
- ✓ Reversible
- ✓ Quick and simple
- ✓ Creates mirror text effect
📦 Base64 Encoding
Standard encoding format used in data URIs, APIs, and web services.
- ✓ Reversible (decode to original)
- ✓ Industry standard encoding
- ✓ Used in APIs and data URIs
🎮 Leet Speak (1337 5p34k)
Internet culture encoding that replaces letters with numbers and symbols.
- ✗ Not reversible
- ✓ Gaming and internet culture
- ✓ Visual text transformation
📡 Morse Code
Classic dots and dashes encoding for text transmission.
- ✓ Reversible (decode from Morse)
- ✓ Historical encoding method
- ✓ Educational value
How to Use the Tool
1. Choose Your Mode
Obfuscate: Convert plain text into obfuscated form
Deobfuscate: Convert obfuscated text back to readable form (only works with reversible methods)
2. Select Obfuscation Method
Choose from 5 methods based on your needs. Each method card shows whether it's reversible and what it's best for.
3. Enter Your Text
Type or paste your text. Results appear instantly—no submit button needed!
4. Use Generated Code (Optional)
For ROT13, Base64, and Reverse methods, click "Show Code" to see implementation in JavaScript, Python, PHP, and C#.
Advanced Features
📋 Batch Mode - Line-by-Line Processing
Process each line separately instead of encoding the entire text as one block. Perfect for encoding lists!
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- ✓ Encoding lists of passwords
- ✓ Processing multiple email addresses
- ✓ Converting lists of names or data
- ✓ Any scenario where each line = one item
👁️ Compare View - Side-by-Side
View your input and output side-by-side with equal heights for easy comparison.
- ✓ Perfect for reviewing transformations
- ✓ Both textareas scroll independently
- ✓ Auto-processes as you type
- ✓ Ideal for longer text comparisons
📁 File Upload & Drag-Drop
Upload text files directly or drag-and-drop them into the input area.
- ✓ Supports .txt files
- ✓ Instant loading into input field
- ✓ Perfect for processing large text files
- ✓ Visual feedback during drag operations
When to Use Batch Mode
🤔 Not Sure Which Mode to Use?
- • You have a paragraph or document to encode as one piece
- • You want newlines to be included in the encoding
- • You're encoding a single message or text block
- • You have a list where each line is a separate item
- • You want to encode 10 passwords (one per line)
- • Each line needs its own individual encoding
- • You're processing CSV data or lists
💡 Pro Tip: The Difference Matters Most with Base64
With ROT13 or Morse Code, the difference between batch and normal mode is subtle. But with Base64 encoding, the difference is huge:
- 🔹 Normal mode: Creates one long Base64 string (includes newlines as encoded characters)
- 🔹 Batch mode: Creates separate Base64 strings for each line (each can be decoded independently)
Code Generation Feature
Our tool automatically generates code snippets in multiple programming languages. This is perfect for developers who want to implement obfuscation in their applications.
Supported Languages:
Each code snippet includes your input, the transformation code, and the expected output as comments.
Common Use Cases
🎬 Spoiler Protection
Hide movie/TV spoilers in forums and reviews using ROT13. Readers can decode if they want to see the spoiler.
🧩 Puzzle Solutions
Share puzzle answers that require a decoding step. Great for educational games and challenges.
📧 Email Obfuscation
Obscure email addresses on websites to prevent spam bot harvesting. Use Base64 encoding in mailto links.
💻 Developer Testing
Generate encoded test data for APIs, use Base64 in data URIs, or create obfuscated mock data.
🎓 Education
Teach basic cryptography concepts, encoding methods, and demonstrate why simple obfuscation isn't secure.
Important Security Notes
⚠️ Not for Real Security
These methods are NOT cryptographically secure! They provide obscuration, not encryption. Never use them for:
- ✗ Password storage or protection
- ✗ Sensitive personal information
- ✗ Financial data or credentials
- ✗ Any data requiring real security
✓ What These Methods ARE For
- ✓ Hiding spoilers from casual viewing
- ✓ Simple text games and puzzles
- ✓ Data encoding for APIs and URIs
- ✓ Educational demonstrations
- ✓ Preventing accidental reading
Method Comparison
| Method | Reversible | Code Gen | Best For |
|---|---|---|---|
| ROT13 | ✓ Yes | ✓ Yes | Spoilers, puzzles |
| Reverse | ✓ Yes | ✓ Yes | Simple obfuscation |
| Base64 | ✓ Yes | ✓ Yes | APIs, data URIs |
| Leet Speak | ✗ No | ✗ No | Visual effect |
| Morse Code | ✓ Yes | ✗ No | Education, fun |
Tips & Best Practices
- 💡 Choose the right method: ROT13 for spoilers, Base64 for APIs, Morse for fun
- 🔄 Test reversibility: Use deobfuscate mode to verify you can decode your text
- 💻 Use code generation: Copy working code snippets for your projects
- 📋 Swap feature: Use "Swap Input/Output" to quickly reverse or chain operations
- ⚠️ Label your encoding: Tell readers what method you used so they can decode
- 🔒 Use real encryption: For anything sensitive, use AES, RSA, or proper crypto libraries
Try Text Obfuscator Now
Dedicated ToolReady to obfuscate text? Access our full-featured tool with 5 methods, code generation, and instant results.