How I Built ResumeEditorAI – A Free AI Resume Builder with FastAPI and Next.js

I'm excited to share a side project I recently launched: ResumeEditorAI – a free AI-powered resume builder that helps job seekers rewrite, restructure, and export ATS-optimized resumes with zero friction.

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🎯 The Problem

Most online resume tools either:

• Lock essential features behind a paywall

• Require sign-ups before even showing results

• Don’t help users tailor resumes to job descriptions

I wanted to change that. The goal was simple:
Make a resume builder that feels instant, helpful, and clean.

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💡 Key Features

✅ Upload your resume (PDF, DOCX, or image)
✅ AI helps rewrite and improve your summary, experience, and skills
✅ Match your resume to a job description for better ATS relevance
✅ Export to clean, modern templates (PDF or DOCX)
✅ No login or signup required

👉 Try it now: https://resumeeditorai.com

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⚙️ Tech Stack

I kept it lean but powerful:

• Frontend: Next.js (with output: export for Firebase Hosting)

• Backend: FastAPI (Python) deployed to Cloud Run

• PDF Parsing: PDF.js (browser-based), LibreOffice + Python for DOCX→PDF

• Template Engine: Jinja2 + DOCX Templating

• Infrastructure: Firebase Hosting + Google Cloud Run

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🧠 Challenges

• Supporting resume uploads in various formats (PDF, DOCX, image)

• Making the editing flow intuitive for non-tech users

• Keeping everything fast despite AI calls

• Preventing API overuse/spam without forcing user registration

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📈 Results So Far

• 💬 Users have told me it “feels easier than Canva”

• 🚫 No account required = more engagement per visit

• 📎 Got featured on a few AI directories already

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🔜 What’s Next

• Add more rewrite "tones" (formal, concise, energetic)

• Expand export styles (Modern, Classic, Minimalist)

• Improve AI feedback on job-resume mismatch

• Optimize mobile experience further

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🙌 Open to Feedback

If you try ResumeEditorAI, I'd love your thoughts — especially on UX, speed, and clarity.
Also, if you're building with FastAPI or Firebase, feel free to ask me anything.

Thanks for reading — happy shipping! 🚢