Logohumayanx
The Pharao Cat
~cat /dev/self

Humayan

Al Rosid

(@humayanx)

The Pharao Cat

Developer behind ExamMint Tools.
Building privacy-first, zero-server tools
for Indian students and aspirants.

LocationMurshidabad, IN
FocusPrivacy-First
StatusBuilding
// for institutes & publishers

bespoke.

custom tool engineering
Custom Engineering Service

Want to build high-performance educational tools for your students? Hire me.

Give your students fast photo resizers, eligibility calculators, and grade trackers under your own brand and domain. ExamMint engineers bespoke, high-performance client-side utilities tailored to your coaching center or university syllabus—with zero backend hosting overhead.

Zero Infrastructure Cost
White-Label On Your Domain
Zero Student Data Liability
Hire Me to Build Your ToolDiscuss via Email
institute_spec.json
{
  "client": "Institutes / Bloggers / Bussiness",
  "domain": "tools.yourinstitute.in",
  "architecture": "100% client-side (WASM)",
  "infrastructure_cost": "₹0.00 / month",
  "data_retention": "zero-server (in-browser)",
  "sla": "unlimited scale, 0 downtime",
  "turnaround": "1–3 weeks"
}
Battle-Tested Core

Built on the exact Rust/WASM engine that powered 1.8M+ search clicks and 56k daily surges at zero server cost.
// about

whoami.

Dropped out of B.Sc. Mathematics to build things. I build ExamMint, a suite of privacy-first web tools for Indian exam aspirants. Every tool runs entirely in your browser. Nothing leaves your device.

I care a lot about software that doesn't ask you to trust it. That's why I default to WebAssembly-compiled Rust, static Astro sites, and local-first storage. In 9.5 months, the suite scaled organically to over 1.8M+ Google search clicks with single-day surges of 56k+ clicks—all on a ₹0 server bill because computation runs directly on client devices.

manifest.json
{
  "name": "Humayan Al Rosid",
  "handle": "humayanx",
  "role": "Founder & Developer of ExamMint",
  "contact": "[email protected]",
  "org": "ExamMint Tools",
  "location": "Murshidabad, India",
  "profiles": [
    "github/humayan-x",
    "linkedin/humayanx",
    "reddit/u/humayanx"
  ],
  "philosophy": "zero-server",
  "organic_clicks": "1.8M+",
  "peak_traffic_24h": "56,098",
  "infra_cost": "₹0.00",
  "tools_shipped": 6,
  "users_tracked": 0
}
01

Client-Side Absolute

If data doesn't need to leave the device, it doesn't. That's a technical decision, not a privacy policy.

02

Offline-First

Tools go offline when they can. Not a rule, just a preference.

03

Logic Over Degrees

Dropped out of mathematics. Understanding why something works matters more than following prescribed steps.

// work

shipped.

6 core platforms
1.8M+
Organic Google Clicks
9.5mo audited GSC / ₹0 ad spend
56,098
Peak Traffic / 24h
Single-day recruitment surge
₹0.00
Server Compute Cost
100% in-browser client execution
109
Official Exam Presets
UPSC, SSC, GDS, Railways, PSCs
0 Bytes
User Data Uploaded
Client-side privacy guarantee
Ecosystemexammint.in

ExamMint Web Suite

for institutesvisit exammint.in

A suite of zero-server, local-first web tools designed specifically for Indian students, university candidates, and competitive exam aspirants. No accounts, no data harvesting, and zero server file uploads. Engineered with Rust+WASM, Web Workers, and local datasets to survive massive traffic surges at zero infrastructure cost.

100% Client-SideZero Server UploadsNo Ads / No TrackersWASM & Local-First
filter:
showing 6 of 6

ExamMint Resizer

(resizer.exammint.in)
live

Rust + WASM Lanczos3 photo & signature resizer with 109 exam presets

India's fastest client-side exam document utility, scaled to 1.8M+ organic Google search clicks at ₹0 server cost. Replaced canvas scaling with Rust-compiled Lanczos3 filtering via WebAssembly for razor-sharp signatures and text, coupled with in-browser Apple HEIC-to-JPEG decoding. Uses Web Workers and dynamic memory sniffing to process massive 48MP–108MP smartphone camera uploads locally without mobile browser crashes.

Key Capabilities:
109 Official Exam Presets (UPSC, SSC, GDS, Railways)Rust-Compiled Lanczos3 WASM Resampling EngineIn-Browser Apple HEIC to JPEG DecodingDynamic Memory Sniffing (48MP–108MP Crash Prevention)Automated Name & Date Stamp GenerationZero File Uploads / 100% In-Browser Execution
#Rust#WebAssembly#Lanczos3#Web Workers#HEIC#Image Processing

ExamMint Academic

(academic.exammint.in)
live

ExamMint Verify

(verify.exammint.in)
live

Age Calculator

(age.exammint.in)
live

JEE Predictor

(jee.exammint.in)
live

ExamMint for Institutes

(exammint.in/for-institutes)
live
// engineering tradeoffs

decisions.

2 core architecture rules
// 01Active Architecture

Client-Side WASM Over Server Compute

Compile image resampling (Lanczos3) and decoding directly to Rust + WebAssembly running in the browser, rather than executing in AWS.

Tradeoff:

Requires in-browser dynamic memory sniffing and Web Workers to protect mobile browsers from out-of-memory crashes on 48MP–108MP phone camera uploads.

Code Rule:

Survives viral spikes (56,098 clicks in 24 hours) at ₹0 server infrastructure cost, zero network egress bills, and zero image data liability.

// 02Retired System

Zero Scraping: Retiring Noticeboard & Portal Watch

Formally shut down ExamMint Notification, Telegram scrapers, and government portal uptime monitors that scraped UPSC/SSC portals.

Tradeoff:

Government exam websites frequently alter DOM markups and anti-bot headers without warning, creating an endless maintenance and debugging treadmill.

Code Rule:

Avoid scraping fragile government exam portals without official APIs. Build self-contained utilities for Indian students that run reliably without breaking on website updates.

// stack

toolchain.

stack.toml
[Languages]
TypeScript# primary
Rust# wasm targets
JavaScript# when needed
[Frameworks]
Astro# SSG, most projects
SolidJS# interactive layers
Vite# build tooling
[Styling]
Tailwind CSS# utility-first
Vanilla CSS# design systems
Lucide Solid# icons
[Infrastructure]
Cloudflare# CDN, DNS
WebAssembly# compute layer
localStorage# persistence
IndexedDB# structured data
[Principles]
Zero-Server# no backend
Local-First# offline capable
Static Generation# pre-render
Privacy by Design# default