Tran Duc Khiem

CLICK ME

CLICK ME

Skip to content DEV Community Create account 0 1 kouta222 kouta222 Posted on May 2, 2025 Mastering Blob on the Web: A Practical Guide for Handling Files and Binary Data # typescript # javascript # frontend Working with Blob in Web Development As part of my internship, I recently started working with Blob in web development — and I was amazed at how powerful it is! This article is a hands-on guide to understanding and using Blob on the client side, covering everything from the basics to real-world use cases and performance tips. 1. What Is a Blob? A Blob (Binary Large Object) is a data type used to represent binary data, such as files, images, or videos, on the client side — especially in JavaScript. It allows you to work with raw data flexibly and efficiently. Here's a simple example of creating a Blob: const data = new Uint8Array([72, 101, 108, 108, 111]); // Binary for "Hello" const blob = new Blob([data], { type: 'text/plain' }); 2. Common Use Cases f...

https://jsfiddle.net/bdj5u9vn/

CLICK ME

a

CLICK ME

Click here

Click here

Click here

Click

PoC: Bluetooth or USB dialog, incorrect permission delegation behavior (Android) iframe below is cross-origin and delegates permissions via allow="bluetooth;usb" Scenarios: Bluetooth PoC , USB PoC

CLICK ME

getUserMedia to canvas WebRTC samples getUserMedia ⇒ canvas Take snapshot Draw a frame from the video onto the canvas element using the drawImage() method. The variables canvas , video and stream are in global scope, so you can inspect them from the console. View source on GitHub

CLICK ME

a

Read all files on PC - PoC - By @qab Hold down the ENTER key for 5 seconds to prove you're human..

a

a

Here's the PoC: Step 1. Put payload in the clipboard Step 2. Get HTML from clipboard and assign to innerHTML

CLICK ME

a

PoC: Android origin spoof due to stale address bar Tap once to start Spoooo👻oooof (ooh, scary!) Scenarios: docwrite1 You must login to continue Forgot password?

PoC: Android origin spoof due to stale address bar Tap once to start Spoooo👻oooof (ooh, scary!) You must login to continue Forgot password?

1 aaa

link

a

a

a

POC