Encoders & Crypto tools

Base64, URL, HTML entity and JWT encoders and decoders alongside SHA/MD5 hashing, HMAC signing and AES encryption powered by the Web Crypto API. Nothing is transmitted.

14 tools in this category

Base64 Encoder

Encode or decode text to/from Base64, UTF-8 safe.

URL Encoder

Encode or decode strings using encodeURIComponent/encodeURI.

HTML Entity Encoder

Encode or decode HTML entities in text.

Hash Generator

Generate SHA-1/256/384/512 hashes of text.

HMAC Generator

Sign a message with HMAC using a secret key.

JWT Decoder

Decode a JWT's header and payload, and check expiry.

AES Encrypt/Decrypt

Encrypt or decrypt text with AES-GCM and a passphrase.

Random String Generator

Generate cryptographically secure random strings.

ROT13 / Caesar Cipher

Encode or decode text with ROT13 or any Caesar shift.

Checksum Comparator

Hash text or a file and compare against an expected checksum.

RSA/ECDSA Key Pair Generator

Generate RSA or ECDSA key pairs and export them as PEM.

File Hash Calculator

Compute SHA-1/256/384/512 digests of a local file.

Vigenère Cipher

Encode or decode text with the classic Vigenère cipher.

Base32 Encoder

Encode or decode text using RFC 4648 Base32.