Parse and inspect JWT tokens client-side. Decode header, payload, and signature. Security-focused debugging tool.

Decode X.509 SSL certificates client-side. Verify PEM format and extract certificate details without uploading files.

Check port numbers and view common service ports database. Includes well-known, registered, and dynamic ports.

Validate IPv4 and IPv6 addresses with CIDR notation. Free online tool for network administrators and developers.

Convert images, fonts, and files to Data URIs. Generate base64 encoded data URLs for embedding resources.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes. Hash text and files locally in browser. No data uploaded, free for developers.