ConvertFlow

 

ConvertFlow – Full-Stack File Converter Web App (Python + Flask)

Launch your own file conversion website in minutes. Fully working backend — just deploy and go.

🔄 What is ConvertFlow?

ConvertFlow is a complete, production-ready file converter web application built with Python and Flask. It handles images, videos, audio, documents, and archives — all from one clean web interface.

No third-party APIs. No subscriptions. No usage limits. You own the entire codebase and run it on your own server.

✨ What It Can Convert

🖼️ Images PNG, JPG, JPEG, WEBP, BMP, GIF, TIFF

🎬 Videos MP4, WEBM, AVI, MOV, MKV, FLV, WMV Powered by FFmpeg with optimised codec settings per format

🎵 Audio MP3, WAV, FLAC, AAC, M4A, OGG, OPUS, WMA, AIFF, AC3 Supports optional bitrate control

📄 Documents PDF, DOCX, ODT, TXT, HTML, RTF, EPUB, Markdown, RST, LaTeX Powered by Pandoc

🗜️ Archives ZIP, TAR, TAR.GZ, TAR.BZ2, TAR.XZ, 7Z Create compressed archives from multiple uploaded files

🛠️ Tech Stack

• Language: Python 3
• Framework: Flask
• WSGI Server: Gunicorn
• Image Processing: Pillow
• Video & Audio: FFmpeg (via subprocess)
• Documents: Pandoc + wkhtmltopdf
• Archives: Python stdlib + 7zip

📁 What You Get

ConvertFlow comes with a clean, well-structured full-stack codebase that’s easy to understand and extend. At its core is a Flask application that handles all routing and backend logic.

The system is modular, with dedicated components for each conversion type — audio, video, documents, and archives — making it simple to customise or expand. Media processing is powered by FFmpeg, document conversion uses Pandoc, and archive creation is handled using Python’s standard tools together with 7zip.

A ready-to-use frontend is included, featuring a simple HTML interface and clean styling, so you can launch immediately without designing anything from scratch.

Deployment is straightforward thanks to a pre-configured Gunicorn setup optimised for handling large files, along with a requirements file for quick dependency installation. A detailed README walks you through setup and deployment step by step.

The application is also built with real-world usage in mind:

• Supports uploads up to 500MB, including large video files
• 10-minute processing timeout for heavy conversions
• Automatic cleanup of temporary files after each job
• Clear error handling with user-friendly messages
• Correct MIME types for seamless file downloads

🚀 Deploy to Render.com in 2 Minutes

This project is built and tested for Render.com deployment.

Build command: pip install -r requirements.txt Start command: gunicorn app:app

That’s it. No complicated setup. No Docker. No config files to dig through.

👤 Who Is This For?

• Developers who want a ready-made converter backend to build on
• Freelancers looking to offer a conversion tool to clients
• Indie makers who want to launch a SaaS tool without starting from scratch
• Students learning Flask who want a real-world project to study

❓ FAQ

Do I need any experience to deploy it? Basic comfort with Git and a Render.com account is enough. The README walks you through every step.

Does it need a paid Render plan? The free tier works, but may spin down after inactivity. A paid plan is recommended for consistent uptime.

Can I modify and resell the code? You can use and modify it for your own projects. Redistribution or resale of the source code itself is not permitted.

Does it require a database? No. Everything is stateless — files are converted in memory and returned directly to the user.