Forem: X.T.O

I Built a Chat App With No Server (Just WebRTC)

X.T.O — Sun, 08 Mar 2026 14:49:08 +0000

I Built a Serverless P2P Chat That Runs Directly in Your Browser

Most chat applications work like this:

User A → Server → User B

Every message goes through a server.

This works well, but it also means:

Messages pass through a central server

The server must handle all traffic

It requires backend infrastructure

So I wanted to try something different.

I built a peer-to-peer chat tool that runs entirely in the browser.

No accounts.
No installation.
No chat server.

Just open the page and start chatting.

Try it here:

👉 https://xto.icu/tools/p2p-chat/

The Idea

Instead of sending messages through a server, the browsers connect directly to each other.

Browser A  ←→  WebRTC  ←→  Browser B

Once the connection is established, messages travel directly between the two users.

No message storage.
No central chat server.

This is possible thanks to WebRTC, a browser technology designed for real-time communication.

WebRTC allows browsers to exchange data directly using RTCDataChannel, which supports low-latency peer-to-peer communication.

How It Works

The process is simple:

User A opens the chat tool
A session code is generated
User B enters the same session code
The browsers establish a WebRTC connection
Messages flow directly between the two browsers

User A
   │
   │ session code
   ▼
User B
   │
   ▼
WebRTC connection
   │
   ▼
Direct chat

Once connected, the chat behaves like a normal messaging app.

But under the hood, it's completely peer-to-peer.

Features

Current features of the tool:

💬 Real-time chat

🔗 Peer-to-peer connection

🔒 Encrypted WebRTC communication

🌐 Runs entirely in the browser

🆓 Free to use

There is no signup and no installation required.

Just open the page and connect.

Why I Built This

I enjoy experimenting with what modern browsers can do.

Many developers still think browsers are only for displaying web pages.

But today browsers can do much more:

Real-time communication

Peer-to-peer networking

File transfers

Collaborative apps

All without installing anything.

Just open a webpage.

Possible Use Cases

Some interesting ways this tool can be used:

Quick private chats

Temporary communication

Testing WebRTC connections

Developer experiments

Learning about peer-to-peer networking

Try It Yourself

Open the tool on two devices or two browser tabs:

👉 https://xto.icu/tools/p2p-chat/

Share the session code and start chatting.

That's it.

What's Next

I'm currently experimenting with more browser-based P2P tools, such as:

P2P file transfer

P2P clipboard sharing

P2P streaming

More WebRTC experiments

Modern browsers are more powerful than many developers realize.

If you try the tool, I’d love to hear your feedback.

What features should I add next?

I Built a Free JavaScript Obfuscator That Runs 100% in Your Browser

X.T.O — Sun, 08 Mar 2026 14:43:33 +0000

I Built a Free JavaScript Obfuscator Tool (No Signup, No Limits)

As developers, sometimes we want to protect our JavaScript code from being easily read or copied.

But most online JavaScript obfuscator tools have problems:

Require signup

Have usage limits

Send your code to their servers

Or hide the good features behind a paywall

So I decided to build something simple.

A free JavaScript obfuscator tool that runs directly in your browser.

No login.
No tracking.
No limits.

Just paste your code and obfuscate it.

What is JavaScript Obfuscation?

JavaScript obfuscation is a technique that transforms readable code into a version that is much harder for humans to understand, while still working exactly the same.

Example:

Original Code

function greet(name) {
console.log("Hello " + name);
}

greet("Developer");

Obfuscated Code

(function(_0x12ab3){console'log';

The functionality is the same, but the logic becomes harder to reverse engineer.

Why I Built This Tool

I built this tool mainly because I needed a quick way to obfuscate small JavaScript projects.

Most existing tools were either:

Too complicated

Paid

Required uploading code to a server

So I made a simple browser tool that works instantly.

Features

⚡ Instant obfuscation

🔒 Runs directly in your browser

🧠 Based on modern JavaScript obfuscation techniques

🆓 Completely free

🚫 No signup required

Try It Here

You can try the tool here:

👉 [https://xto.icu/tools/javascript-obfuscator/]

Just:

Paste your JavaScript
Click Obfuscate
Copy the result

Done.

Example Use Cases

Some cases where obfuscation can be useful:

Protecting frontend business logic

Preventing easy scraping

Making reverse engineering harder

Protecting commercial scripts

Of course, obfuscation is not perfect security, but it can raise the barrier significantly.

Tech Behind It

The tool is built using:

JavaScript

Browser-based processing

No backend processing required

This means your code never leaves your browser.

Final Thoughts

This tool is simple, but I hope it can be useful for other developers as well.

If you have ideas for improvements or new features, feel free to share them.

Happy coding! 🚀

I Built a Browser-Based P2P File Transfer Tool Using WebRTC (No Server Upload)

X.T.O — Sat, 07 Mar 2026 20:48:28 +0000

Most file transfer tools on the internet work the same way:

Upload the file to a server
The server stores it
The other user downloads it

This works fine, but it has some downsides:

Files are temporarily stored on a server
Upload time can be slow for large files
It consumes server bandwidth

So I wanted to experiment with something different.

I built a browser-based peer-to-peer file transfer tool using WebRTC.

No server storage.
No upload step.
Just direct browser-to-browser transfer.

💡 The Idea

Instead of uploading files to a server, the browsers connect directly to each other.

The file is transferred peer-to-peer using WebRTC.

Browser A  ←→  WebRTC  ←→  Browser B

This means:

No server upload
No server storage
Direct encrypted connection
Faster transfer for many cases

Everything happens inside the browser.

⚙️ How It Works

The tool uses WebRTC DataChannels to establish a peer-to-peer connection between two users.

The process is simple:

User A opens the tool and creates a session
A session code is generated
User B enters the same session code
A WebRTC connection is established
Files are transferred directly between the two browsers

User A
  │
  │ session code
  ▼
User B
  │
  ▼
WebRTC connection
  │
  ▼
Direct file transfer

Once connected, files move directly between both users without going through a central server.

🌐 Why WebRTC?

WebRTC is usually known for things like:

Video calls
Voice chat
Real-time collaboration

But it also supports DataChannels, which allow browsers to send arbitrary data directly to each other.

That makes it perfect for building peer-to-peer tools directly in the browser.

Modern browsers are much more powerful than many developers realize.

✨ Features

The tool currently supports:

Peer-to-peer file transfer
No server storage
Direct browser connection
Session code based pairing
Encrypted WebRTC connection

Everything runs entirely client-side.

🧪 Try It Yourself

You can try the tool here:

👉 https://xto.icu/tools/p2p-file-drop/

Open the page on two devices or two browsers, share the session code, and start transferring files.

🧠 Why I Built This

This project started as a small experiment to explore what modern browsers can do.

It's amazing that we can now build peer-to-peer applications directly in the browser without requiring users to install anything.

Just open a webpage and it works.

🔮 Next Experiments

I'm also exploring other browser-based P2P tools, such as:

P2P chat
P2P clipboard sharing
P2P streaming experiments
More WebRTC utilities

There’s a lot of interesting potential here.

💬 Feedback Welcome

If you try the tool, I would love to hear your feedback.

What features would make it more useful?