Developer Guides
Guides on localhost tunneling, local webhook debugging, ngrok alternatives, and secure HTTPS tunnels for modern development teams.
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Stripe Connect Webhooks: The Local Testing Guide
Test Stripe Connect webhooks locally. Account events, the connected-account header, deauthorization handling — what regular Stripe guides leave out.
Discord Webhooks vs Interactions, Tested Locally
Discord webhooks are easy. Discord interaction endpoints are not. Here is the practical guide to testing both locally with HTTPS and Ed25519 verification.
Why Your Webhook Returns 401 or 403 (and How to Fix It)
Webhook 401 and 403 errors are almost always one of five things. A diagnostic walkthrough that pinpoints which one before you waste an afternoon.
Webhook Signature Verification, Without the Mystery
Most webhook signature failures aren't crypto bugs. They're parsing bugs. Real fixes for HMAC, timing-safe comparison, replay attacks, and raw-body handling.
Test Shopify Webhooks Locally Without Surprises
Test Shopify webhooks locally and stop chasing HMAC bugs. Real fixes for base64 signatures, raw body parsing, and the test-store gotchas nobody mentions.
Next.js Webhooks on Localhost, Done Right
Test Next.js webhooks locally with a tunnel. Raw body in route handlers, App Router edge cases, and the Stripe signature pattern that actually works.
Test Twilio Webhooks Locally: Full Guide
Test Twilio webhooks locally for SMS, voice, and messaging callbacks. Use a secure HTTPS tunnel to inspect payloads and validate signatures on localhost.
PortPreview vs localtunnel: Which to Use?
Compare PortPreview vs localtunnel for webhook debugging, HTTPS reliability, and request inspection. Find the best tunnel tool for your dev workflow.
PortPreview vs ngrok: Best Alternative
Looking for an ngrok alternative? Compare PortPreview vs ngrok for localhost tunneling, webhook debugging, open-source transparency, and request inspection.