Free security tools that help you create strong credentials and protect sensitive text — no signup, running entirely in your browser. Generate unguessable passwords with the password generator (customize length and character types), then verify their strength with the password strength checker. Create memorable-but-secure passphrases, random PINs, or API tokens with the random token generator. Encrypt private notes with AES encrypt/decrypt, or verify file integrity by generating MD5, SHA-256, and SHA-512 hashes and comparing them with the hash compare tool. Developers generate random tokens and secrets for API keys, and the hash generators create checksums for verifying downloads. The ciphers demonstrate encryption concepts for learners, while businesses use them to share sensitive snippets safely. Because everything runs locally, your passwords and plaintext are never transmitted, stored, or logged anywhere. Remember: no tool replaces good habits — enable two-factor authentication everywhere and keep your software updated. Pair strong passwords with a reputable password manager so you only memorize one master secret.
Frequently asked questions
How do I create a strong password?
Use the password generator: set a length of at least 16 characters and include uppercase, lowercase, numbers, and symbols. Longer passwords beat complex-but-short ones every time. Store it in a password manager — never reuse passwords across sites. Generate a fresh password for every account — reuse is how breaches spread. Your password manager remembers them so you do not have to.
How can I check if my password is strong?
Type it into the password strength checker for an estimated crack time, with warnings for common patterns and dictionary words. The check runs entirely in your browser, so your password is never sent anywhere. Aim for a crack time measured in centuries, not minutes. It also warns against keyboard patterns like qwerty and repeated characters. Re-check after tweaking until the estimate reaches centuries.
How do I encrypt text with AES?
Paste your text into the AES encrypt tool, set a passphrase, and it outputs encrypted ciphertext you can safely store or share. Decrypt it later with the same passphrase. AES-256 is the same encryption standard banks and governments rely on. Use a long, unique passphrase — the encryption is only as strong as the key. Never share the passphrase in the same message as the ciphertext.
How do I verify a downloaded file is genuine?
Generate the file's SHA-256 hash and compare it with the hash on the software's official site. The hash compare tool does this in one step. If they match, the file has not been tampered with. Even a one-byte change produces a completely different hash. Always get the reference hash from the developer's official site, not a mirror. This single check defeats most tampered-download attacks.