Encoders & Decoders

Encode any string for safe use in URLs. Converts spaces, special characters, and Unicode into percent-encoded format compliant with RFC 3986.

Decode a percent-encoded URL string back to its human-readable form. Useful for debugging query strings and API parameters.

Decode HTML entities back to characters.

Convert hexadecimal string to text.

Convert text to hexadecimal representation.

Convert octal values (space-separated) to text.

Convert text to octal representation.

Convert ASCII decimal values (space-separated) to text.

Encode text to Base32 format.

Decode Base32 back to text.

Apply ROT13 substitution cipher.

Apply ROT47 substitution cipher.

Shift letters by N positions (N on first line).

Reverse shift letters by N positions (N on line 1).

Apply Atbash substitution cipher (A->Z, B->Y).

Encode text using a keyword (Keyword on line 1).

Decode text using a keyword (Keyword on line 1).

Encode ALL characters into HTML entities.

Encode text to UTF-8 URI format.

Decode UTF-8 URI format to text.

Convert text to \uXXXX unicode escapes.

Convert \uXXXX escapes to text.