A passionate Full Stack Developer and creator from Bihar, India. Engineering performant web applications, React Native mobile apps, browser extensions, and serverless edge solutions with Next.js, Node.js, and Cloudflare.
Get to know me
Hi, I'm Chitranjan Kumar Gupta — a creative and driven full-stack developer from Bihar, India. I bring a unique combination of innovation, curiosity, and hands-on engineering to every product I build.
My focus spans modern web development (Next.js, Express, Laravel), cross-platform app engineering (React Native, Expo, Electron.js), performant serverless architectures (Cloudflare Workers), and database system design (PostgreSQL, MongoDB, Redis).
I'm an active open-source creator building browser extensions (FreshMarks, PastePass, Expo DevTools), developer utilities, and backend automation tools.
What I work with
What I've built
Browser Extension used to automatically update and repair bookmarks by replacing outdated URLs with redirected counterparts. Active on Chrome Web Store, Edge & Firefox Add-on store.
Chrome & Edge Extension to seamlessly open React Native Devtools in Expo projects through ngrok tunnels, enhancing mobile debugging with tunnel auto-detection.
Production-ready serverless package hosted on npmjs that acts as a performant Telegram Bot webhook handler entirely on Cloudflare Workers edge compute without cold starts.
Browser Extension used to easily paste anywhere, even on restricted or locked website inputs. Active daily users on Chrome Web Store, Edge, and Firefox Add-ons.
Browser Extension used to easily scan QR codes and generate customized QR codes instantly from any active tab or image. Active on Chrome Web Store, Edge & Firefox Add-on store.
Lightweight, modern authentication provider module integrating Telegram Login Widget with Next.js, React, and backend session handlers.
Official studio plugin for Sanity CMS to embed interactive social media posts (X, Instagram, YouTube) directly into rich text portable content.
Security research suite and test harness demonstrating session hijacking attack vectors via malicious QR codes with defensive counter-measures.
Automated Telegram Bot written in Python that monitors Flipkart product prices and notifies users instantly when price drops or discounts occur.
Production-ready Docker container with Ganache local Ethereum testnet with pre-funded custom accounts. Over 360+ downloads on GitHub Package Registry.
AI autofiller, smart clipper, and learning assistant extension for students & educators to streamline e-learning workflows and course management. Active on Firefox and Edge store.
Live Deployments & Products
A collection of live web applications, developer utilities, mobile platforms, and interactive experiments built by Chitranjan.
Full-featured Learning Management System application for course delivery, video lessons, and student progress tracking.
Interactive LMS web portal deployed on Vercel connecting learners and instructors with live class management.
Suite of utility tools, developer helpers, and productivity micro-apps engineered for daily workflows.
Dynamic news and editorial media platform powered by Sanity CMS headless content architecture and real-time publishing.
Custom web-based audio and video player featuring playlist queuing, audio visualizer, and keyboard shortcuts.
Visual puzzle and image manipulation app allowing dynamic grid slicing, image randomization, and interactive reassembly.
Android-style 9-dot cryptographic pattern lock screen rendered on HTML5 Canvas for web authentication.
Comprehensive education & competitive exams guidance portal with syllabus trackers, notifications, and cut-off metrics.
Desktop-inspired web file system explorer with directory tree navigation, file previews, and search indexing.
Low-latency real-time chat application with bi-directional room events, instant messaging, and user presence.
Knowledge base and technical resource hub sharing engineering walkthroughs, frameworks, and coding tips.
Career Journey
Maintaining 24×7 high-availability RHEL enterprise server infrastructure, automated access control operations, and engineering full-stack operational dashboards.
Immersive enterprise engineering training specializing in backend service development, full-stack architectures, automated testing, and containerization.
Academic Foundation
Verified Accreditations
Articles & Insights
Practical technical write-ups covering React Native, Next.js, WebExtensions, and architectural debugging.
Debugging Expo React Native
Tunneling in Expo React Native
This extension or addon automatically updates your bookmarks by replacing outdated URLs with their redirected counterparts. It ensures that your bookmarks always point to the current location, removing the old URLs for better organization and accuracy.
Meta tags in Nextjs
PastePass is a convenient web extension designed to enhance your browsing experience, especially on websites that restrict right-click functionality. With PastePass, you can effortlessly paste content from your clipboard into input fields and text areas with a simple click.
React Hook Form defaultValues does not reset automatically after first rendering
Uncaught Error: Rendered fewer hooks than expected. This may be caused by an accidental early return statement in React or Next.js or React Native or Expo
Syntax error: /workspaces/rappserver/frontend/styles/globals.css The `border-border` class does not exist. If `border-border` is a custom class, make sure it is defined within a `@layer` directive.
Guide the developer snake to collect frameworks and cloud tools. Use Arrow Keys or WASD to navigate!
Eat frameworks to grow your stack. Don't hit the boundary walls!
Let's work together
I'm currently open to new opportunities and collaborations. Whether you have a project in mind, a question, or just want to say hi — my inbox is always open!
