String Obfuscator

What is a String Obfuscator?

Obfuscate sensitive strings (API keys, secret tokens, IBANs, email addresses, credit cards) by replacing middle characters with asterisks (`*`) or dots while preserving prefix/suffix context.

Why Use This Tool?

Documentation & Screenshots: Safely display sample API keys (`sk_live_****1234`) in docs or video tutorials.
Support & Logging: Mask user emails or IBAN numbers in log files to comply with GDPR/privacy rules.
Security Testing: Verify string masking formats before deploying code.

How to Use

Paste your sensitive string or API key.
Set visible prefix count (e.g. 4 chars) and suffix count (e.g. 4 chars).
Copy the obfuscated string output.

Real Working Example

Input Text:

sk_live_51Nx9876543210SecretKey99

Output Result:

sk_li************************Key99

Important Technical Details & Features

Configurable Mask Character: Custom mask symbol (`*`, `•`, `X`, or `#`).
Preserves Length & Context: Keeps string length intact so engineers recognize the key type.
100% Local Security: Secret keys never leave your browser—zero network transfer.

Related Text & Developer Utilities

Fake Data Generator: Generate dummy test data.
File Hash Checksum: Calculate cryptographic hashes.
Text Encryption: Encrypt text with AES password.

Frequently Asked Questions

Can obfuscated strings be reversed back to original secrets?

No, masked characters are permanently replaced by symbols (*).

Is my secret key uploaded to a server?

No, all masking occurs locally inside your web browser.

Can I choose how many characters remain visible?

Yes, customize leading and trailing visible character counts.

Is it free?

Yes, 100% free.

What is the main function of String Obfuscator?

Mask sensitive strings (API keys, IBANs, tokens, emails) to make them shareable without revealing secret content. This tool processes string obfuscator data 100% locally inside your web browser.