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Interrogate the portfolio

A terminal wired into everything Mark has shipped. Ask in plain language — it answers with the work itself, linked.

M4RKYU.SYS
● online

Query the archive. Try one of these, or ask your own:

    01 / selected

    Things I shipped.

    A short loop of the projects worth showing — ready ones in front, drafts dimmed behind them.

    All projects
    01
    Nimbus landing page introducing its file workspace, AI assistant, and browser-to-browser transfer
    Ready2024

    Nimbus

    A passwordless cloud workspace for organizing, sharing, beaming, and asking questions about your files.

    • Next.js 16
    • React 19
    • TypeScript
    • Appwrite
    • +3
    02
    BioLoom generator with platform tabs, model counts, guided fields, and an output panel
    Ready2024

    BioLoom

    A no-signup AI writing tool that generates, scores, edits, and shares platform-specific bios across eight models.

    • Next.js 15
    • React 19
    • TypeScript
    • Vercel AI SDK 4
    • +4
    03
    M4rketView dashboard showing market cap, dominance, volume, sentiment, gainers, losers, and a heatmap
    Ready2024

    M4rketView

    A free, no-key crypto dashboard with live prices, resilient public-data fallbacks, local portfolios, alerts, and comparison tools.

    • React 18
    • TypeScript
    • Vite 6
    • TanStack Query
    • +4
    04
    Bloomprint home page offering buildable yard plans for real homes
    Ready2026

    Bloomprint

    Turns yard inspiration into a buildable plan — what to buy, how much, what tools, in what order, and what can go wrong.

    • Next.js
    • React 19
    • TypeScript
    • Supabase
    • +4
    05
    PolitiLens political compass dashboard comparing news outlets and story clusters
    Ready2026

    PolitiLens

    A political news intelligence dashboard for comparing how outlets across the spectrum frame the same story.

    • Next.js 16
    • React 19
    • TypeScript
    • TanStack Query
    • +6
    06
    Purecreate repository documentation describing the Next.js 15 migration and 3D application stack
    Ready2024

    Purecreate

    A 3D apparel customizer that designs your shirt in real time and generates decals from a text prompt with DALL·E 3.

    • Next.js 15
    • React 18.3
    • react-three-fiber
    • three.js
    • +3
    07
    Unreal Engine prototype inventory with vicinity loot, backpack items, equipment slots, and two weapons
    Ready2021

    Unreal Battle Royale Prototype

    A single-player Unreal Engine 4 systems prototype covering stance, looting, equipment, inventory, weapons, and scopes.

    • Unreal Engine 4.26.2
    • Blueprints
    • UMG
    • Marketplace assets
    08
    Descent Into Madness gameplay showing a player firing through a procedural dungeon room
    Ready2024

    Descent Into Madness

    A published Unity WebGL dungeon shooter with procedural floors, sanity pressure, classes, bosses, loot, and fast-travel exploration.

    • Unity 2022.3.9f1 LTS
    • C#
    • URP
    • WebGL
    • itch.io
    09
    UI Studio home screen offering a new shareable collaborative board
    Ready2024

    UI Studio

    A no-login multiplayer design canvas with shared objects, cursors, comments, undo history, and exportable room URLs.

    • Next.js 14
    • TypeScript
    • Fabric.js 5
    • Liveblocks
    • +2
    10
    AI Agent Tools repository overview identifying it as an experimental Windows-first local AI toolkit
    Ready2026

    AI Agent Toolkit

    A personal Windows-first toolkit for local AI coding: PowerShell automation, Ollama, a Streamlit control center, and conservative repo workers.

    • PowerShell
    • Python
    • Streamlit
    • Ollama
    • +3
    11
    M4rkdown split editor showing Markdown source and rendered preview
    Ready2024

    M4rkdown

    A v3.1 offline-first Markdown workspace with advanced preview, local documents, collaboration, and an eight-player typing arena.

    • Preact 10
    • TypeScript
    • Vite
    • CodeMirror 6
    • +4

    03 / visual

    Frames & films.

    Black-and-white photography, digital art, and short films. Stills and motion, filed as they're finished.

    Open archive
    collection · 1/4

    Chengdu

    Chengdu

    0 frames
    Open collection

    04 / writing

    Field notes.

    Short, dated, opinionated. Devlog plus systems notes — syndicated from dev.to.

    All logs
    SHIPPING
    Jun 164 min read

    Frontend Linear Data Structures Deep Dive: Arrays, Stacks, Queues, and Linked Lists

    The Big Picture Before diving into stacks, queues, and linked lists, it helps to know...

    computersciencealgorithmsbeginnersjavascript
    Read
    DEVLOG SOON

    Field notes for this slot are queued.

    05 / resources

    Tools & links.

    A working stack — in-browser dev utilities I built, plus the links I actually keep open. Each with a note on why.

    Open resources
    built · run in-browser · kept open06
    1. 01

      Contrast Checker

      Every time I tweak a token I want to know whether the pair still clears the accessibility bar — without leaving the page.

      Run
    2. 02

      JSON Formatter

      The one tool every API consumer reaches for. Native JSON.parse + stringify, no upload, no server round-trip.

      Run
    3. 03

      Password Generator

      Local generation only — bytes never leave the browser. The strength bar is informative, not theatrical.

      Run
    4. 04

      MDN Web Docs

      developer.mozilla.org

    5. 05

      Claude

      claude.ai

    6. 06

      Coolors

      coolors.co

    06 / about

    The person behind it. — ZhenXiao Mark Yu · Ontario, Canada

    The full story

    let's collaborate

    Something on your mind? Frontend systems, prototypes, creative tooling, or just a hello — whichever.

    Send a briefEmail directly