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Free browser-based security and privacy utilities. All processing happens locally — nothing is uploaded or stored.
Generate secure random passwords with custom rules
Encode text to Base64 or decode Base64 back to plain text
Encode or decode URL-encoded strings and query parameters
Toolzilla's Security & Privacy Tools generate strong passwords, encode and decode Base64 strings, and handle URL encoding — all locally. Your secrets and data never travel to a server, making these tools safe for tokens, API keys, and sensitive strings during development.
Create cryptographically random passwords with custom length and character sets.
Tip: Use 16+ characters with mixed case, numbers, and symbols for strong security.
Encode plain text to Base64 or decode Base64 back to readable text.
Tip: Base64 is encoding, not encryption — do not rely on it for security.
Encode special characters for safe use in URLs and query strings.
Tip: Encode query parameter values before building API request URLs.
No. Passwords are generated in your browser memory and disappear when you close the tab. Copy them to a password manager right away.
No. Base64 is easily reversible. Use proper encryption for sensitive data protection.
Encoding and decoding happen locally, but avoid pasting live production secrets into any browser tool as a general security practice.