Công cụ lập trình

Compose CSS transform values for translate, scale, rotate, and skew with live preview and copy-ready CSS.

Create animated CSS loading spinners with live preview. Copy HTML, keyframes, and full CSS snippets.

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text instantly in your browser.

Create strong random passwords with custom length, character sets, and strength feedback.

Analyze password strength with entropy estimates, crack-time projections, and improvement tips.

Encrypt and decrypt text with AES-GCM or AES-CBC using a passphrase or hex key, entirely in your browser.

Decrypt AES-GCM or AES-CBC JSON payloads using the passphrase or hex key that was used to encrypt them.

Encrypt and decrypt text with RSA-OAEP public/private keys, including hybrid mode for longer messages.

Decrypt RSA-OAEP JSON payloads with your private key, including hybrid RSA + AES-GCM ciphertext.

Inspect TLS certificates for any public hostname — expiry, issuer, chain, cipher, and hostname match.

Check when a website SSL certificate expires. See days remaining, expiry date, chain validity, and renewal recommendations.

Query public DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA, and PTR.