Free Online Encryption & Decryption Tools

Free online random password generator tool, supports custom password length, options to include uppercase and lowercase letters, numbers, special symbols, etc., real-time password strength detection, one-click copy of generated secure passwords. Suitable for account registration, password reset, security key generation and other scenarios, pure front-end generation ensures privacy and security.

Free online HASH calculation tool, supports multiple hash algorithms such as MD5, SHA1, SHA224, SHA256, SHA384, SHA512, SHA3-256, SHA3-512, RIPEMD-160, supports multiple output formats including hexadecimal, Base64, and binary, with the option to add salt value to enhance security.

Free online URL encoding and decoding tool, supports RFC 3986 standard encoding, form encoding, UTF-8 hexadecimal, Base64 and many other formats, real-time conversion, batch processing, essential tool for web development and debugging.

Free online Base64 decoding tool, supports decoding of standard Base64 strings and Data URL formats, supports multiple encoding formats including UTF-8, UTF-16, ISO-8859-1, with real-time decoding results display.

Free online Base64 encoding tool, supports Base64 encoding of various format contents including text, JSON, HTML, provides multiple encoding formats such as UTF-8, UTF-16, ISO-8859-1, supports Data URL format generation, one-click copy of encoding results.

Free online JWT token parsing tool, supports decoding the Header, Payload, and Signature parts of a JWT Token, validating JWT format, viewing expiration time, issuer, and other information.

Free online MD5 encryption tool, supports text MD5 hash calculation, provides 32-bit/16-bit case-sensitive output formats, supports salt encryption and auto-calculation. Suitable for password encryption, data verification and other scenarios.

Free online Morse code encryption and decryption tool, supports text to Morse code and Morse code to text conversion, real-time bidirectional conversion. Supports international Morse code standard, suitable for code learning, communication encoding, fun decryption and other scenarios.

Free online HMAC hash calculation tool, supports HMAC for multiple hash algorithms including MD5, SHA1, SHA256, SHA512, and provides output formats such as hexadecimal, Base64, and binary. Suitable for API signature verification, message authentication, data integrity verification and other scenarios.

Free online Bcrypt password hashing and verification tool, supports custom salt values and work factor adjustment, quickly generates secure password hashes and performs verification. Suitable for developer password storage, security testing and other scenarios.

Free online SM3 hash calculation and verification tool. Supports SM3 hash calculation, HMAC-SM3 message authentication code generation, and hash verification. Complies with the State Cryptography Administration GB/T 32905-2016 standard, outputting 256-bit (64 characters) hexadecimal hash values. Suitable for domestic cryptography applications, e-government, financial security and other scenarios.

Free online Punycode encoding and decoding tool, supports encoding and decoding of Internationalized Domain Names (IDN) and Unicode strings. Suitable for Punycode conversion of non-ASCII character domain names such as Chinese, Japanese, and Korean domain names. Enter a domain name or Unicode text for one-click conversion.

Free online MD5 decryption tool, supports reverse lookup of common MD5 hash values to quickly find original strings. Useful for password recovery and security testing.

Free online RSA key pair generation tool. Supports generating 1024-4096 bit RSA public and private keys, PEM format export, key format validation, and key pair matching verification.

Free online AES encryption and decryption tool. Supports text and file encryption with 128/192/256-bit key lengths. Multiple modes: CBC, ECB, CFB, OFB, GCM. All operations are performed locally to protect your data security.

Free online DES encryption and decryption tool, supports text encryption, file encryption, multiple encryption modes (ECB, CBC, CFB, OFB, CTR), various padding methods, custom key and IV, secure and reliable encryption service.

Free online RC4 encryption and decryption tool supporting multiple formats including text, Base64, and hexadecimal. RC4 is a stream cipher algorithm with fast encryption/decryption speed, suitable for data encryption scenarios. All operations are performed locally to protect your data security.

Free online Rabbit encryption tool supporting Rabbit stream cipher algorithm. Enter key and plaintext for fast encryption, suitable for secure data transmission and sensitive information protection.

Free online TripleDES encryption and decryption tool. Supports text and file encryption with CBC, ECB modes. 3DES is a symmetric encryption algorithm that encrypts data three times using three 56-bit keys. All operations are performed locally to protect your data security.

Free online Escape encoding and decoding tool. Supports URL encoding/decoding, percent-encoding, and application/x-www-form-urlencoded format conversion. Perfect for web development, data transmission, and URL parameter handling.

Free online SM2 asymmetric encryption key pair generator. Generate SM2 public and private keys with format validation, encryption/decryption examples, and signature verification. Supports key package download. All operations are performed locally for privacy protection.

Free online SM4 encryption tool supporting text and file encryption. Supports CBC, ECB, CTR, OFB, CFB modes. All operations are performed locally for data security.

Online archive password extraction tool. Query ZIP, RAR, 7Z archive passwords by MD5 hash. Help users recover forgotten archive passwords.

Free online ECC elliptic curve key pair generation and validation tool. Supports X25519, Ed25519, secp256k1, P-256 curves. Provides key generation, format validation, key matching verification, encryption/decryption, signing/verification, and key exchange functions.

Free online DSA key pair generation and validation tool. Supports generating 1024-4096 bit DSA public and private keys, PEM format export, key format validation, key pair matching verification, and DSA signing/verification.

Free online AES decryption tool supporting text and file decryption. Supports multiple key sizes (128/192/256-bit), encryption modes (CBC/ECB/CFB/OFB/GCM) and padding methods. All operations are performed locally for data security.

Free online DES decryption tool supporting text and file decryption. Decrypt encrypted content using DES algorithm with CBC, ECB, CFB, OFB modes. Local decryption ensures data security.

Free online Rabbit decryption tool supporting Rabbit stream cipher algorithm for text decryption. Enter key and ciphertext for fast decryption conversion, suitable for secure data transmission and sensitive information protection.

Free online TripleDES decryption tool supporting text and file decryption. Supports CBC, ECB, CFB, OFB, CTR encryption modes and Base64/Hex input formats. Local decryption ensures data security.

Free online SM4 decryption tool supporting CBC, ECB, CTR, OFB, and CFB modes. Supports Base64 and hexadecimal input formats. Secure and reliable national cryptography algorithm decryption service, all operations are performed locally.