Security & Encryption
Encryption, hashing and identity checks without a server. Generate strong passwords, compute MD5 or SHA checksums, inspect JWTs, or encrypt with AES, DES and RSA — all inside your browser tab.
Security & Encryption · 15 tools
MD5 Hash Generator
Online MD5 hash generator with 16/32-bit hex output and case conversion. Produce MD5 digests for integrity che…
Hash Generator
Online hash generator covering MD5, SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512. Create digests for integrity…
Batch Hash Calculator
Hash a whole column of data at once — one digest per line. Supports MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA…
File MD5 Checksum
Compute MD5 checksums for uploaded files to verify integrity and detect tampering.
File Hash Checksum
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes for uploaded files to confirm downloads are intact.
Password Generator
Generate strong random passwords with configurable length and character classes to resist brute-force attacks.…
Password Strength Checker
Score a password by information entropy (length × log2 charset), then deduct for common passwords, repeated ru…
JWT Decoder
Decode and inspect JSON Web Tokens: read header and payload, check expiry and debug API authentication. Fully …
AES Encrypt/Decrypt
Online AES encryption and decryption with AES-128/192/256, CBC/GCM/ECB/CFB modes and PKCS7 padding. Fully proc…
JWT Generator
Create JWTs with custom header and payload. Multiple signing algorithms supported for quick test tokens. Fully…
Chinese ID Number Validator
Validate Chinese ID numbers (18-digit and legacy 15-digit) in bulk. Four gates: length and characters, provinc…
DES/3DES Encrypt
Online DES and 3DES encryption with ECB/CBC modes and PKCS7 padding. Fully processed in your browser, keys nev…
RSA Encrypt/Decrypt
Online RSA asymmetric crypto with key pair generation, public-key encryption and private-key decryption.
File MD5 Modifier
Change a file's MD5 by appending random data. Batch supported, up to 5 files.
Self-Signed Certificate Generator
Generate self-signed SSL/TLS certificates with RSA or ECDSA keys, multi-domain and IP SANs, custom validity, a…
Security covers digests, checksums, tokens and encrypted text: MD5/SHA, file hashes, password generation, JWT inspection, and AES/DES/RSA encryption. Use it to verify integrity, check tokens and validate crypto parameters.