Force HTTPS and enable HSTS — v0
HTTP is marked "Not Secure" by Chrome. Any HTTP request leaks cookies and lets attackers inject content on hostile networks. Missing HTTPS also caps SEO ranking.
Fixing this in v0
Vercel AI component and app generator
v0 scaffolds Next.js App Router code — most fixes live in metadata objects and Server Components. Paste the prompt below into your v0 chat and the fix rolls out across the project in one pass.
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The prompt for v0
Copy and paste this into your v0 chat exactly as-is.
Regenerate my v0 component / page with these fixes applied: Force HTTPS 1. Configure your hosting provider to issue a Let's Encrypt certificate (most platforms do this automatically). 2. Add a permanent (301) redirect from http:// to https://. 3. Set the Strict-Transport-Security header so browsers refuse plain HTTP.
Why this matters
Google uses HTTPS as a ranking signal and Chrome labels HTTP sites "Not Secure" right in the address bar. No modern hosting platform charges for HTTPS — Vercel, Netlify, Replit, Lovable, Cloudflare all include free certificates.
HSTS takes HTTPS one step further: it tells the browser to refuse HTTP for your domain entirely, for a long max-age. This blocks an entire class of downgrade attacks.
Enabling HSTS also unlocks the HSTS preload list — Chrome and Firefox ship your domain as HTTPS-only out of the box, so even a first-time visitor on a compromised network is safe.
How to use this prompt in v0
- 1. Open your v0 project.
- 2. Copy the prompt above with the copy button.
- 3. Paste into the v0 chat and send.
- 4. Review the diff, accept the changes, redeploy.
- 5. Verify the fix using the checklist below.
Common mistakes to avoid
- error_outlineEnabling HSTS before all subdomains serve HTTPS — browsers then refuse non-HTTPS subdomains.
- error_outlineSetting `Strict-Transport-Security: max-age=300` for "safety" — short max-age defeats the point.
- error_outlineRedirecting HTTP to HTTPS via a 302 instead of a 301 — SEO equity leaks.
- error_outlineRedirecting to a specific HTTPS path and losing the original query string.
How to verify the fix worked
- check_circleVisit `http://yoursite.com` — browser must redirect to HTTPS automatically.
- check_circle`curl -I http://yoursite.com` — returns `301 Moved Permanently` with an HTTPS Location header.
- check_circle`curl -I https://yoursite.com` — response includes `Strict-Transport-Security: max-age=31536000; includeSubDomains`.
- check_circleRun SSL Labs test at https://www.ssllabs.com/ssltest/ — grade A or A+.
Frequently asked questions
Do I need a paid SSL certificate?expand_more
Should I preload HSTS?expand_more
Can HSTS lock me out if something goes wrong?expand_more
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