DEV Community: Edvin

I built the Ultimate Open Source YouTube Downloader (No Ads, Next.js 16) 🎥

Edvin — Mon, 15 Dec 2025 14:34:01 +0000

I built the Ultimate Open Source YouTube Downloader (No Ads, Next.js 16) 🎥

Hi everyone! 👋

Let's be honest: downloading a YouTube video in 2025 is a nightmare. You search for a converter, and you are bombarded with shady pop-ups, fake download buttons, and NSFW ads.

I got tired of risking malware just to save a song or a tutorial. So, I built WavePipe.

It is a clean, modern, and open-source web application to download videos and playlists, powered by the industry-standard yt-dlp.

🚀 What is WavePipe?

WavePipe is a Progressive Web App (PWA) that converts YouTube links into MP3 (Audio) or MP4 (Video) files instantly. It's built to be fast, responsive, and completely free of clutter.

✨ Key Features

🚫 Zero Ads: No pop-ups, no tracking, no nonsense. Just a clean tool.
📦 Playlist Support: Download entire playlists in one go (most tools charge for this!).
⚡ Modern Tech: Built with Next.js 16 and Tailwind CSS.
📱 PWA Ready: You can install it on your phone or desktop as a native-like app.
💪 Power Under the Hood: It uses yt-dlp, the most robust downloader engine available.

📸 Preview

🛠️ How to use it

Go to the app: WavePipe Demo
Paste a YouTube Video or Playlist URL.
Choose your format (MP3 or MP4).
Hit Download and watch the magic happen.

👨‍💻 For Developers (The Tech Stack)

This isn't just a frontend wrapper; it's a full-stack solution handling complex media streams.

Frontend: Next.js 16 (App Router) for server-side rendering and speed.
Styling: Tailwind CSS for a responsive, mobile-first design.
Core Engine: yt-dlp (Python). The app spawns a process to handle the extraction and conversion logic securely on the server side.
Architecture: It handles stream piping to deliver files to the browser without overloading server memory.

It is fully Open Source. If you want to see how I handled the child processes or the Next.js API routes, check out the code:

👉 GitHub Repository: EdvinCodes/WavePipe

🐛 Feedback

I built this to have a tool I can trust on my own devices. I hope you find it as useful as I do!

If you like the project, a Star ⭐️ on GitHub is greatly appreciated.

Happy downloading! 🌊

I built a Free Spotify to YouTube Music Migrator 🎵 (Python + React)

Edvin — Mon, 15 Dec 2025 12:17:30 +0000

I built a Free Spotify to YouTube Music Migrator 🎵

Hi everyone! 👋

We've all been there: you want to switch from Spotify to YouTube Music (or just sync your playlists), but every tool out there asks for a monthly subscription or limits you to "first 100 songs free".

As a developer, I didn't want to pay to move my own data. So, I built LinkList.

It is a Full Stack web application that migrates your playlists automatically, wrapped in a modern Neon-Cyberpunk interface.

🚀 What is LinkList?

LinkList connects to your Spotify account, reads your playlists, and uses a powerful Python backend to find and recreate those songs on YouTube Music. No caps, no paywalls.

✨ Key Features

💸 100% Free & Open Source: No "premium" tiers or song limits.
🎨 Cyberpunk UI: A responsive, neon-themed interface built with React and Tailwind CSS.
🧠 Smart Matching: The backend searches for the best match on YouTube Music, not just the first result.
⚡ Full Stack Power: Combines the speed of a React frontend with the data-processing power of Python.

📸 Preview

🛠️ How it works

Go to the live demo: LinkList App
Log in with your Spotify account to load your playlists.
Authenticate with YouTube Music.
Select a playlist and watch the magic happen!

👨‍💻 For Developers (The Tech Stack)

Unlike my previous client-side tools, this is a robust Full Stack application.

Frontend: React (Vite) + Tailwind CSS for that crisp Neon look.
Backend: Python (Flask). I chose Python because of its incredible libraries for data handling.
APIs: Uses Spotipy for Spotify data and ytmusicapi to interact with YouTube Music.
Deployment: Vercel (Frontend).

It is completely Open Source. You can check how I handled the OAuth flow and the Python-React communication here:

👉 GitHub Repository: EdvinCodes/LinkList

🐛 Feedback

I built this to solve my own problem, but I'd love to hear what you think. If you try it out, let me know if the "Cyberpunk" vibe works for you!

If you find it useful, consider dropping a star ⭐️ on the repo.

Happy coding and happy listening! 🎧🚀

I built an Open Source Instagram Unfollowers tool (No Login required)

Edvin — Wed, 03 Dec 2025 11:09:46 +0000

I built an Open Source Instagram Unfollowers tool (No Login required) 🛡️

Hi everyone! 👋

I was tired of "Unfollowers" apps that require a monthly subscription, show tons of ads, or worse—ask for my Instagram password (which is a huge security risk).

So, being a developer, I decided to build a safe, open-source alternative. I took inspiration from existing community scripts and wrapped them into a modern, user-friendly tool with a brand new Glassmorphism UI and Mobile support.

🚀 What is "Instagram Unfollowers 2025"?

It's a script that runs locally in your browser console. It scans your followers/following lists using your active session and shows you exactly who isn't following you back.

✨ Key Features

🛡️ 100% Safe: It runs on your side (client-side). No password required.
⚡ No Login: It uses your active browser session cookies securely.
📱 Mobile Ready: Works on iOS/Android via a simple bookmarklet trick.
🧠 Smart Logic: Includes "Safe Mode" delays to prevent soft-bans from Instagram.
🎨 Modern UI: Built with Preact and Shadow DOM to inject a beautiful interface without breaking Instagram's layout.

📸 Preview

(The tool running on Desktop)

🛠️ How to use it

You don't need to install Node.js or clone the repo if you just want to use it.

Go to the official site: https://edvincodes.github.io/InstagramUnfollowers/
Click the "Copy Code" button.
Open Instagram.com on your PC (or Mobile browser).
Open the Developer Console (F12) and paste the code.
Hit Enter and enjoy!

👨‍💻 For Developers (The Tech Stack)

For those interested in the code, the project is built using:

TypeScript for type safety.
Preact for a lightweight UI inside the browser.
Shadow DOM to isolate styles from Instagram's CSS.
Webpack to bundle everything into a single copy-pasteable script.

It is completely Open Source. You can audit the code, contribute, or give it a star ⭐️ here:

👉 GitHub Repository: EdvinCodes/InstagramUnfollowers

🐛 Feedback & Support

This project is heavily based on community knowledge, and I want to keep improving it.

If you find any bugs or have suggestions, please let me know in the comments below or email me directly at: edvintrabajo@gmail.com.

Hope it helps you clean up your feed! Happy coding! 🚀