Why Vibe Coders Should Never Build Their Own Cookie Consent

## The DIY Cookie Consent Trap You're a vibe coder. You think: "How hard can it be? Just a banner with two buttons." **This is a trap.** Here's what actually happens: Day 1: "I'll show a banner and save to localStorage" Day 2: "Wait, analytics still fires before consent" Day 3: "Let me block scripts... why isn't this working?" Day 7: "I got a warning from Google Ads about Consent Mode" Day 14: "I'm just going to use a CMP" ## Problem #1: Your Scripts Still Fire Showing a banner doesn't block anything. By the time your JavaScript runs, tracking scripts have already executed. To actually block scripts, you need to: - Use type="text/plain" on script tags - Intercept document.createElement - Override appendChild/insertBefore - Block document.cookie writes - Handle dynamically injected iframes This is not a weekend project. ## Problem #2: Google Ads Will Penalize You Since March 2024, Google requires **Consent Mode v2**. Without it: - No remarketing audiences from EU users - Conversion tracking breaks - Smart Bidding underperforms - **You may get suspended from Google Ads** GetCookies has a registered Google CMP Partner Developer ID. DIY solutions don't. ## Problem #3: Race Conditions By the time your consent check runs, GTM and Meta Pixel have already fired. GetCookies uses a synchronous loader that sets consent defaults BEFORE anything else loads. ## Problem #4: Third-Party Pixels Don't Listen Meta, TikTok, Pinterest - each has its own consent API you must call. GetCookies handles all of them automatically. ## The Real Cost of DIY | DIY Cookie Consent | ~46 hours | | GetCookies | 30 seconds | Plus risk of GDPR fines and Google Ads suspension. ## Just Use GetCookies ```html ``` Your scripts will actually be blocked. Your Google Ads will stay compliant. *GetCookies: Because DIY cookie consent is a trap.*