---
title: "Lakhyajit Changmai (@lakhyajit) | Hashnode"
description: "Founder of ZANCTA - privacy-first PDF and image tools that run entirely in your browser. No uploads, no server-side processing."
url: "https://hashnode.com/@lakhyajit"
---

@lakhyajit

# Lakhyajit Changmai

@lakhyajit · Guwahati, Assam, India · Joined October 2026

Founder of ZANCTA - privacy-first PDF and image tools that run entirely in your browser. No uploads, no server-side processing.

### [How to Verify That a File Really Stays in Your Browser](https://zancta-engineering.hashnode.dev/how-to-verify-that-a-file-really-stays-in-your-browser?utm_source=hashnode&utm_medium=feed)

“Runs locally” is a useful privacy promise, but it should be something a user can verify—not just a line in a feature list. A browser-based tool can process a file on your device, send it to a server,

3 min read · [zancta-engineering.hashnode.dev](https://zancta-engineering.hashnode.dev/how-to-verify-that-a-file-really-stays-in-your-browser?utm_source=hashnode&utm_medium=feed)

[4h ago](https://hashnode.com/posts/how-to-verify-that-a-file-really-stays-in-your-browser/6af73f438491300ccccd630a)