Your Images Are Leaking Your Location, Device, and Identity Here's How to Stop It

Muntazir Mahdi — Sat, 21 Mar 2026 06:01:51 +0000

Every photo you take contains a hidden file within a file.
It is called EXIF data. And it records your GPS coordinates, your device model and serial number, the exact timestamp of capture, your WiFi network name, and your camera settings — all embedded silently into the image file before you ever share it.
You cannot see it. But anyone with a free online tool can.
I discovered this problem and spent weeks building a solution. This is the story of ANFA Layer — an open source image privacy and security library that strips all metadata and generates cryptographic proof of image authenticity.

Stop Uploading Files to Servers: Why I Built a 100% Client-Side Utility Hub 🛡️

Muntazir Mahdi — Sun, 08 Mar 2026 22:50:32 +0000

The Problem with Traditional Converters
We’ve all been there—you need to convert a sensitive PDF or a private image, and you head to the first "Free Online Converter" you find. But as developers, we know the truth: the moment you hit "Upload," your data belongs to someone else's server.

Introducing CanvasConvert.pro
I built CanvasConvert.pro with one mission: to prove that high-performance file processing belongs in the browser, not the cloud.

How It Works (The Tech Stack)
Instead of a traditional backend-heavy architecture, we’ve moved the engine to the client-side:

Next.js 14: For a blazing-fast, SEO-optimized frontend.

WebAssembly (Wasm): We compile high-performance modules to handle complex tasks like PDF merging and image manipulation directly in the browser's RAM.

Local-First Processing: Your files never leave your device. Zero server uploads. 100% privacy.

What’s Inside?
We’ve grown from a few tools in December to over 130+ professional utilities today:

🖼️ Image Suite: WebP, HEIC, SVG, and high-fidelity bulk converters.

📄 PDF Toolkit: A Wasm-powered engine to merge, sign, and edit PDFs locally.

🌐 Web3 Utilities: Smart Contract auditors and crypto unit converters for the decentralized web.

💻 Developer Tools: JSON formatters, code diff checkers, and regex testers.

Why I'm Sharing This
As a Computer Science student and the founder of ANFA Technology, I want to build a more transparent web. I’d love for the Dev.to community to check it out, break things, and give me feedback on the performance of our Wasm implementation.

Check it out here: https://canvasconvert.pro

Let’s build a future where data privacy isn't just a feature, but the default. 🚀

DEV Community: Muntazir Mahdi

Your Images Are Leaking Your Location, Device, and Identity Here's How to Stop It

Stop Uploading Files to Servers: Why I Built a 100% Client-Side Utility Hub 🛡️