Multi-Language Code Editor

Textarea plus syntax-highlighted preview — honest lightweight scope

Editor

// Lightweight scratchpad — not a full IDE
function greet(name) {
  return `Hello, ${name}`;
}

Lightweight textarea editor with react-syntax-highlighter preview — not a full IDE.

Visualize BPE tokens with color blocks, model selector, and per-request cost estimate

Verify HS256 and RS256 JWT signatures and validate exp, nbf, aud and iss claims

Generate RSA, ECDSA P-256 or Ed25519 SSH key pairs with OpenSSH public format and SHA256 fingerprint

Estimate CPU and memory requests, limits and HPA settings with downloadable YAML manifests

Paste CSV and browse rows in a sortable table with delimiter detection

Open many URLs in new tabs with a configurable delay between each