Practical guides for cleaner URLs, smarter SEO, and a more thoughtful web. Find your next useful idea.
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6 articles
Editor's pickLearn how to validate user-supplied URLs safely with scheme and host policies, DNS/IP checks, redirect controls, and network egress defenses for fetch features.
Learn how to validate URLs to prevent SSRF with scheme and host policies, DNS and IP checks, connection pinning, redirect validation, and egress controls.
Learn how to accept callback URLs safely with scheme and host allowlists, DNS/IP checks, redirect controls, and network egress restrictions for SSRF defense.
Learn how SSRF happens, why DNS and redirects complicate URL checks, and how allowlists, egress controls, and metadata protections reduce risk.
Build a safer Node.js URL fetcher with HTTPS and host allowlists, redirect checks, timeouts, response limits, DNS safeguards, and egress controls.
Learn to prevent open redirect vulnerability with destination IDs, safe relative paths, strict URL allowlists, HTTP status codes, and testing guidance.