HTML
StructureHTML is the skeleton of every page: headings, links, buttons and forms. Tim Berners-Lee created it in the early 1990s.
Here it builds the nav, project cards, calculator keys and game boards.
Open to collaborations
I build fast, secure software for the web.
Right now: FastAPI backends
I’m Shubhomoy, a full-stack and AI developer. I ship quick, private tools with Python, FastAPI and plain web tech.
Learning by building.
Each project here started as an experiment: a captcha engine, an AI chat app, a handful of network and RF case studies. Most of them are still running today.
I care about speed, readable code and small surfaces. If something here is useful to you, email is the fastest way to reach me.
- BackendPython, FastAPI and Flask on Render and Vercel serverless.
- FrontendSemantic HTML, modern CSS and vanilla JavaScript.
- Security & ResearchHMAC and SHA-256 hashing, network telemetry and RF metrics analysis.
- Deployment & DNSVercel, Hurricane Electric DNS, GitHub Actions and hybrid mail routing.
Three colours, three languages.
Every page here is plain HTML, CSS and JavaScript. No frameworks. The three accent colours belong to those three languages; tap one to repaint the site.
CSS
StyleCSS controls how everything looks: colours, layout, animation and responsive design. It was proposed in 1994 by Håkon Wium Lie.
Here it draws the dark theme, the moving strip, the hover effects and the phone layout.
JavaScript
BehaviourJavaScript makes pages interactive. Brendan Eich wrote the first version at Netscape in 1995 in about ten days.
Here it runs the fidget spinner, calculator, SHA-256 tool, password generator and all five games.
Selected projects & research
Tools and technical papers I designed, built and run myself.
S-Captcha Maintenance
A captcha that keeps no database. Invisible checks, text challenges and an image honeypot, with rate limits built on hashed IP addresses. In maintenance for now, so it may be briefly unavailable.
Open projectHi, how can I help?Explain FastAPI routes
SAI In development
A chat app for quick answers, code help and developer support. Still growing, so expect rough edges.
Open project5GNSA
Research Blog Active
Independent write-ups on Windows MAS HWID, C2R Office, 5G NSA Network Telemetry.
Visit BlogClock Live
A live clock in the browser, built with plain HTML, CSS and JavaScript.
Open ClockDev Tools Live
Small developer utilities that run in the browser. No install, no account.
Open Dev ToolsMatrix Terminal Live
A matrix-style terminal in the browser. Type commands and watch the code rain.
Open TerminalImage Gallery Live
A spinning, bearing-style gallery with a built-in image maker. Photos and characters come from Robohash and Unsplash-style sources; the AI pictures come from Pollinations.
Open GalleryMore on GitHub Live
Browse the code, experiments and open-source work. The numbers load straight from GitHub when this card scrolls into view.
…repos
…followers
…following
Tools & toys
Small utilities that run fully in your browser. Nothing you type here is sent anywhere.
0
History
- Your calculations show up here.
Arcade
Five quick games written in plain JavaScript. Your scores are saved in your browser only.
Your turn (X)
0You
0Draw
0AI
Moves: 0
Find all 8 pairs in as few moves as you can.
Click the box, wait for it to change colour, then click as fast as you can.
Score: 0 · Best: 0
Arrow keys or WASD to steer, Space to pause. On a phone, swipe on the board or use the pad.
Let’s build something together.
Email is the fastest way to reach me. I’m happy to talk collaborations, technical research and software integrations.