Encryption & Checksum Tools
Generate passwords, UUIDs and TOTP codes, decode JWTs, calculate hashes and test AES encryption. Core browser features are free.
TOTP Generator
Generate time-based one-time codes from a secret, view time remaining and test two-factor authentication setup.
FreeBrowserJWT Decoder
Decode JWT headers and payloads to inspect token claims; decoding does not verify signatures.
FreeBrowserHash Generator
Calculate SHA-1, SHA-256, SHA-384 or SHA-512 hashes from text and copy the digest for verification.
FreeBrowserUUID Generator
Generate random UUIDs and validate existing identifiers for database IDs and test data.
FreeBrowserPassword Generator
Generate random passwords with custom lengths and character sets, with strength estimates.
FreeBrowserSymmetric Encryption
Encrypt and decrypt text with a password using AES-GCM for encryption workflow testing.
FreeBrowserCaesar Cipher
Encode or decode text with a custom letter shift to explore classical substitution ciphers.
FreeBrowserRail Fence Cipher
Encode and decode text with adjustable rails to explore zigzag transposition ciphers.
FreeBrowserFile Checksum
Calculate MD5 or SHA checksums for local files and compare existing hashes to check file integrity.
FreeBrowser