Deploy your Vercel app to Heroku
Step-by-step deployment help for Vercel apps on Heroku. We fix Vercel-specific deployment issues, configure Heroku, and get your app live. From $19.
Vercel issues we fix before deploying
Common Vercel problems that affect Heroku deployments.
Missing environment variables
Variables set locally but not configured in Vercel, causing runtime crashes in production that didn't happen during development.
No security headers
Missing Content-Security-Policy, X-Frame-Options, and other headers that protect against XSS, clickjacking, and content injection.
Serverless function timeouts
API routes that take too long hit Vercel's timeout limits, causing 504 errors for users.
Cold start latency
Serverless functions have cold start delays that make API responses slow after periods of inactivity.
Heroku deployment issues we check for
Common Heroku problems that break Vercel apps in production.
Free dyno sleeping causes cold starts
Eco and Basic dynos sleep after 30 minutes of inactivity. AI-generated apps with webhook receivers or background jobs break when the dyno is asleep.
Ephemeral filesystem loses uploaded files
AI tools save user uploads and generated files to the local filesystem, but Heroku's ephemeral FS wipes all changes on every dyno restart or deploy.
Database connection pool exhaustion
Heroku Postgres plans have strict connection limits (20 on Hobby). AI-generated apps open a new connection per request, exhausting the pool under moderate traffic.
Procfile missing or incorrect
AI-generated projects lack a Procfile, causing Heroku to guess the start command. For non-standard setups, this guess is often wrong.
Start with a self-serve audit
Get a professional review of your Vercel project before deploying to Heroku.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
How do I deploy a Vercel app to Heroku?
We handle Vercel deployments to Heroku end to end. Start with our code audit ($19) to identify deployment blockers specific to your Vercel project, then we configure Heroku, fix issues, and get your app live in production.
What Vercel issues affect Heroku deployments?
Vercel projects commonly have missing environment variables and no security headers. On Heroku, these combine with free dyno sleeping causes cold starts and ephemeral filesystem loses uploaded files to cause deployment failures.
Can SpringCode deploy my Vercel project to Heroku?
Yes. We specialize in deploying Vercel applications to Heroku. We audit your codebase for Vercel-specific issues, configure Heroku correctly, and handle the full deployment so your app runs reliably in production.
What does Vercel deployment to Heroku cost?
Our code audit ($19) identifies all Heroku deployment blockers in your Vercel project. Full deployment assistance is scoped with a fixed quote after the audit — no hourly billing or surprise charges.
Related resources
Other techs on Heroku
Deploy Vercel elsewhere
Need help deploying Vercel to Heroku?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.