Deploy your JavaScript app to Render
Step-by-step deployment help for JavaScript apps on Render. We fix JavaScript-specific deployment issues, configure Render, and get your app live. From $19.
JavaScript issues we fix before deploying
Common JavaScript problems that affect Render deployments.
Prototype pollution
AI-generated code merges user-supplied objects into prototypes via Object.assign or spread operators without sanitization, enabling property injection attacks.
Loose equality comparisons
Using == instead of === leads to type coercion bugs where '0' == false, null == undefined, and other non-obvious truthy/falsy comparisons cause silent logic errors.
Unhandled promise rejections
Async functions without try/catch or .catch() handlers cause unhandled rejection warnings and silent failures in production.
Global variable leaks
Missing 'const' or 'let' declarations create implicit globals that pollute the global scope and cause unpredictable behavior across modules.
Render deployment issues we check for
Common Render problems that break JavaScript apps in production.
Free tier services spin down after 15 minutes
Render's free web services sleep after inactivity, causing 30-50 second cold starts that break webhook integrations and frustrate users.
Build command not set for monorepo projects
AI-generated monorepos lack a root directory or build filter configuration, causing Render to build from the wrong directory or skip the project entirely.
Persistent disk not attached for file uploads
User-uploaded files disappear on redeploy because AI tools write to the ephemeral filesystem instead of attaching a Render persistent disk.
Environment groups not linked across services
Database URLs and shared secrets are duplicated across services instead of using Render environment groups, leading to configuration drift.
Start with a self-serve audit
Get a professional review of your JavaScript project before deploying to Render.
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 JavaScript app to Render?
We handle JavaScript deployments to Render end to end. Start with our code audit ($19) to identify deployment blockers specific to your JavaScript project, then we configure Render, fix issues, and get your app live in production.
What JavaScript issues affect Render deployments?
JavaScript projects commonly have prototype pollution and loose equality comparisons. On Render, these combine with free tier services spin down after 15 minutes and build command not set for monorepo projects to cause deployment failures.
Can SpringCode deploy my JavaScript project to Render?
Yes. We specialize in deploying JavaScript applications to Render. We audit your codebase for JavaScript-specific issues, configure Render correctly, and handle the full deployment so your app runs reliably in production.
What does JavaScript deployment to Render cost?
Our code audit ($19) identifies all Render deployment blockers in your JavaScript project. Full deployment assistance is scoped with a fixed quote after the audit — no hourly billing or surprise charges.
Related resources
Other techs on Render
Deploy JavaScript elsewhere
Need help deploying JavaScript to Render?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.