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Special Character Remover

Free online tool to remove special characters from text and keep only the characters you want.

🛠️ Preservation Options

📝 Input Text

📊 Statistics

Input Characters0
Output Characters0
Removed Characters0

✨ Result

Remove special characters from text. Choose which character types to keep: letters, numbers, or spaces. Non-ASCII characters (Korean, Japanese, Chinese, etc.) are always preserved.

Key Features​

  • Selective Removal: Choose which to keep among letters, numbers, and spaces
  • Multilingual Protection: Automatically preserves non-ASCII characters like Korean, Japanese, and Chinese
  • Real-time Statistics: Display input/output/removed character counts
  • Instant Processing: See results immediately as you type
  • Copy Function: Copy results with one click

How to Use​

Basic Usage​

  1. Enter text containing special characters in the input area
  2. Select which character types to keep:
    • Keep Letters (A-Z, a-z): Preserve alphabets
    • Keep Numbers (0-9): Preserve digits
    • Keep Spaces: Preserve spaces, tabs, and newlines
  3. Results with special characters removed are displayed automatically

View Statistics​

  • Input Characters: Total character count of original text
  • Output Characters: Character count after processing
  • Removed Characters: Number of characters removed

Use Cases​

1. Text Cleanup​

Input: Hello! @#$% World***
Options: Letters ✓, Numbers ✓, Spaces ✓
Output: Hello  World

2. Extract Numbers Only​

Input: $1,234.56 USD
Options: Letters ✗, Numbers ✓, Spaces ✗
Output: 123456

3. Phone Number Cleanup​

Input: (02) 123-4567
Options: Letters ✗, Numbers ✓, Spaces ✗
Output: 021234567

4. Filename Cleanup​

Input: my_file!@#$.txt
Options: Letters ✓, Numbers ✓, Spaces ✗
Output: myfiletxt

5. Korean Preservation​

Input: 안녕하세요! Hello@#$123
Options: Letters ✓, Numbers ✓, Spaces ✓
Output: 안녕하세요 Hello123

Korean, Japanese, Chinese, etc. are automatically preserved!

Special Characters Removed​

The following ASCII special characters are removed:

Punctuation and Symbols​

! " # $ % & ' ( ) * + , - . /
: ; < = > ? @
[ \ ] ^ _ `
{ | } ~

Preserved Characters​

  • Non-ASCII characters: Korean (가-힣), Japanese (ひらがな, カタカナ, 漢字), Chinese (汉字), emojis, etc.
  • Selected options: Letters, numbers, spaces

Practical Application Examples​

1. User Input Validation​

When special characters are not allowed in web forms:

Input: john.doe@email.com
Output: johndoeemailcom (letters+numbers only)

2. URL Slug Generation​

Clean up blog post titles for use in URLs:

Input: "Hello, World!" - Introduction
Options: Letters ✓, Numbers ✓, Spaces ✓
Output: Hello World  Introduction

3. Data Sanitization​

Clean data before CSV or database input:

Input: $1,000.00
Output: 100000 (numbers only)

4. Password Strength Check​

Remove special characters to verify only letters/numbers:

Input: P@ssw0rd!123
Letters+Numbers: Pssw0rd123

5. Code Comment Removal​

Remove comment symbols in programming:

Input: // This is a comment
Options: Letters ✓, Numbers ✓, Spaces ✓
Output:  This is a comment

Multilingual Support​

This tool automatically preserves non-ASCII characters:

Korean​

Input: 안녕하세요!@#$
Output: 안녕하세요

Japanese​

Input: こんにちは!@#$
Output: こんにちは

Chinese​

Input: 你好!@#$
Output: 你好

Emoji​

Input: Hello! 😊👍🎉
Output: Hello 😊👍🎉 (letters+spaces+emojis)

Technical Details​

Special Character Detection Regex​

// ASCII special character range
/[!-/:-@\[-`{-~]/

// Character classification
/[a-zA-Z]/ - Letters
/[0-9]/ - Numbers
/\s/ - Spaces (space, tab, newline)

Processing Algorithm​

for (let char of inputText) {
  if (keepLetters && /[a-zA-Z]/.test(char)) {
    result += char; // Keep letters
  } else if (keepNumbers && /[0-9]/.test(char)) {
    result += char; // Keep numbers
  } else if (keepSpaces && /\s/.test(char)) {
    result += char; // Keep spaces
  } else if (!/[!-/:-@\[-`{-~]/.test(char) && !/[\s]/.test(char)) {
    result += char; // Keep non-ASCII characters (Korean, Japanese, Chinese, etc.)
  }
  // Rest are removed
}

Option Combination Examples​

All Options ON (default)​

Input: Hello! 안녕 123 @#$
Output: Hello 안녕 123

All Options OFF​

Input: Hello! 안녕 123 @#$
Output: 안녕
(Only non-ASCII characters remain)

Letters Only ON​

Input: Hello! 안녕 123 @#$
Output: Hello안녕

Numbers Only ON​

Input: Hello! 안녕 123 @#$
Output: 안녕123

Frequently Asked Questions​

Q: Are Korean or Chinese characters removed?​

No. This tool only removes ASCII special characters. Non-ASCII characters like Korean, Japanese, Chinese, and emojis are automatically preserved.

Q: Are dots (.) and hyphens (-) removed too?​

Yes. Dots (.), hyphens (-), underscores (_), etc. are considered special characters and are removed.

Q: What happens if there are multiple consecutive spaces?​

Spaces are preserved as is. To reduce multiple spaces to one, use the Whitespace Remover tool.

Q: Are newlines included in spaces?​

Yes. The "Keep Spaces" option includes spaces, tabs, and newlines.

Q: Can I keep @ and . in email addresses?​

Not in the current version. This tool removes all ASCII special characters. Use a different tool to remove only specific characters.

Performance​

  • Processing Speed: Very fast with character-by-character iteration (O(n))
  • Memory Efficient: Uses minimal memory
  • Real-time Processing: Results display while typing

Practical Tips​

1. Phone Number Normalization​

Input: +82-10-1234-5678
Options: Numbers only ✓
Output: 82101234567

2. Extract Price Information​

Input: $1,234.56
Options: Numbers only ✓
Output: 123456

3. Username Generation​

Input: John Doe!@#
Options: Letters ✓, Numbers ✓
Output: JohnDoe

4. Multilingual Text Cleanup​

Input: Hello! 안녕! こんにちは! 你好!
Options: Letters ✓, Spaces ✓
Output: Hello 안녕 こんにちは 你好

Browser Compatibility​

This tool works normally in the following browsers:

  • Chrome (all versions)
  • Firefox (all versions)
  • Safari (all versions)
  • Edge (all versions)
  • Opera (all versions)

Privacy Protection​

This tool operates completely client-side. Your input data is not transmitted to any server and is processed only in your browser.