--- title: "ShipSafe vs URL & Website Scanners: Surface vs Source (2026) | ShipSafe" description: "URL scanners check your deployed site from the outside — headers, TLS, ports. They never see your source, so IDOR, broken auth, and hardcoded secrets are invisible. Free code scan." doc_version: 2026-09-14 last_updated: 2026-09-14T06:35:24.961Z canonical: https://ship-safe.co/vs/url-scanners --- # ShipSafe vs URL & Website Scanners: Surface vs Source (2026) | ShipSafe Scanning the surface vs. reading the code # ShipSafe vsURL & Website Scanners URL scanners check your deployed site from the outside — headers, TLS, open ports. They never see your source, so the bugs that **actually sink AI-built apps** are invisible to them. [Scan My App Free](https://ship-safe.co/scan)[See pricing](https://ship-safe.co/pricing) Free scan2 minutesNo card needed The trade-off ## The honest version URL and website scanners are useful for what they do: hit your live site and check the outside — TLS config, security headers, exposed ports, obvious misconfigurations, sometimes basic injection probes. Run one; it's a fine hygiene check. But they scan the surface, not the source. They can't see that `/api/invoices/43` skips an ownership check, that an admin gate exists only in your React component, that an auth condition is inverted, or that a service key is hardcoded in a file. Those bugs don't show up from the outside — and they're exactly what AI coding tools ship most. ShipSafe reads the code. It clones your repo and analyzes your actual auth flow and data access — the logic a URL scanner can't reach — in plain English with a fix. Side by side ## ShipSafe vs URL scanners, side by side ShipSafe URL scanners Reads your source code ShipSafeClones the repo, reads every fetched file URL scannersNo — scans the deployed surface only Finds logic-level auth bugs ShipSafeIDOR, inverted auth, missing ownership checks URL scannersInvisible from outside the app Finds hardcoded secrets ShipSafeYes — reads the source files URL scannersCan't see source files Who it's built for ShipSafeFounders shipping AI-built apps URL scannersGeneral deployed-surface hygiene Output ShipSafePlain English + copy-paste AI Fix Prompt URL scannersSurface findings (headers/TLS/ports) Tuned for AI-generated code ShipSafeBuilt for Cursor/Lovable/Bolt/v0/Replit output URL scannersGeneral web checks Secrets in your deployed JS bundle ShipSafeScans the shipped browser bundles for keys, even on random-named consts a source scan skips URL scannersReads HTML and headers, not what's inside your JS Proves a leaked key is actually live ShipSafeFinds the key in your shipped bundle; run the CLI on your own machine and one read-only call to OpenAI/Stripe/GitHub confirms it works vs revoked URL scannersDoesn't see keys, so can't test them BaaS data exposure (Supabase + Firebase) ShipSafeFlags missing RLS and open Firestore rules in your repo; run the CLI on your own machine and one real read-only request proves whether a Supabase table, Storage bucket or Firebase database is readable by anyone URL scannersNo concept of your database or its policies Security headers, CSP, TLS, open ports ShipSafeCovered by our DAST, but the surface is their home turf URL scannersHonestly strong here: deep, mature external surface checks ### Where URL scanners are the right call - You want a quick check of TLS, security headers, and open ports. - You're verifying production hygiene on a live URL. - You need an external view of your deployed surface. - You're pairing surface checks with a source-code scan (smart). ### Where it leaves a solo founder exposed - IDOR, broken auth, and missing ownership checks live in code — invisible from the outside. - Hardcoded secrets sit in source files a URL scanner never reads. - A clean external scan says nothing about your app's logic. - AI tools ship logic bugs, which is precisely the blind spot. - A live API key shipped in your JS bundle is public right now, but a scanner that only reads HTML and headers walks past it. - An unprotected Supabase table is readable by anyone with your anon key, and a generic URL scan never tests for it. ## Frequently Asked Questions ![](https://ship-safe.co/_next/image?url=%2Fmascot%2Fbosun-charts.jpg&w=384&q=75&dpl=dpl_mZg928obB8jMgQedvvnYgx76i8hy) Isn't a URL scan enough? It checks your deployed surface — headers, TLS, ports. It can't see your source, so logic bugs like IDOR and broken auth, and hardcoded secrets, are invisible to it. ShipSafe reads the code where those bugs live. What's the difference from ShipSafe? URL scanners look at your app from the outside. ShipSafe looks from the inside — your actual repo and auth logic. Run both — they cover different halves, and neither covers all of it. Do I need my code on GitHub? Yes — ShipSafe scans your GitHub repository so it can read the logic a surface scan can't. Will a URL scanner find my hardcoded API key? No — that key is in a source file, not on the deployed surface. ShipSafe reads source, so it catches it. ## The bug isn't on the surface. It's in the code. URL scanners check the outside. ShipSafe reads the inside. Paste your GitHub URL — 2 minutes, plain English. [Scan My App Free](https://ship-safe.co/scan) No credit card required. [See all plans](https://ship-safe.co/pricing) This is an independent comparison provided for informational purposes. All product names, logos, and brands are the property of their respective owners; ShipSafe is not affiliated with, endorsed by, or sponsored by them. Statements about other products reflect publicly available information at the time of writing and may change, so please verify current details on each provider’s own website. ## Sitemap Every page of this site, in markdown: [https://ship-safe.co/sitemap.md](https://ship-safe.co/sitemap.md)