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Mixed HTTP/HTTPS Content on Replit
Browser shows mixed content warning or blocks insecure resources. Deployed app mixes secure HTTPS with insecure HTTP requests.
Modern browsers block HTTP content loaded from HTTPS pages.
Error Messages You Might See
Mixed Content: The page at 'https://...' was loaded over HTTPS, but requested an insecure resource
Common Causes
- Hardcoded http:// URLs in templates instead of https://
- External resources (CDN, API) using HTTP
- WebSocket using ws:// instead of wss://
- Relative URLs containing scheme
How to Fix It
Use relative URLs when possible: /api/endpoint instead of https://domain.com/api. Always use https:// for external resources and wss:// for WebSocket on HTTPS sites. Use Thymeleaf @{} for relative URLs. Check browser console (F12) for mixed content warnings. Force HTTPS with server.http2.enabled=true and redirect http to https.
Real developers can help you.
David Olverson
Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production.
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I worked with React/Node/Python
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Supabase expert
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Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
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Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
https://blog.vtemian.com/
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
🚀 Leadership: Managing and coaching teams of 15+ engineers, fostering a culture of accountability and continuous improvement.
🏗️ Architecture: Enterprise Core Systems, Multi-system Integration (ERP/API/ETL), and Core Database Structure.
☁️ Cloud & Scale: AWS Expert; architected systems handling 10B+ monthly requests and managing 100k+ SKUs.
📈 Business Impact: Aligning tech strategy with P&L goals to drive $70k+ in monthly recurring revenue.
I thrive on "out-of-the-box" thinking to solve complex technical bottlenecks and am always looking for ways to use automation to improve business productivity.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
Should I use absolute or relative URLs?
Relative URLs (/path) when possible. Absolute URLs only for external domains
What about external CDNs?
Ensure CDN supports HTTPS. Most modern CDNs use HTTPS by default