🤖

AI

ai.ximg.app

Frontier LLMs, AI companies, 75-year history, and core concepts explained

📋

All Apps

apps.ximg.app

Complete directory of every app in the stack — descriptions, domains, and launch dates

🦅

America

america.ximg.app

Why the USA is the greatest country in history — science, tech, medicine, military, culture & more

🖥️

American Computing

computers.ximg.app

How America invented the computer — types, timeline, companies & the pioneers who changed the world

🎯

American Firearms

guns.ximg.app

Firearm types and the top 10 most popular guns in America — facts, stats, and history

⚙️

Ansible

ansible.ximg.app

Agentless automation — playbooks, modules, inventory, Vault, roles, and history

▓

ASCII

ascii.ximg.app

Spinning donut, matrix rain, and sine plasma in the terminal

💲

Bash

bash.ximg.app

Bash scripting reference — variables, arrays, functions, and common patterns

😈

BSD

bsd.ximg.app

Berkeley Software Distribution — the OS that gave the internet TCP/IP, OpenSSH, and ZFS. FreeBSD, OpenBSD, NetBSD, and macOS ancestry

🦋

Butterfly

butterfly.ximg.app

Canvas particle animation driven by the butterfly curve

🎬

The Video

video.ximg.app

40-second cinematic showcase of ximg.app — 8 AI-generated scenes stitched into one immersive promo video

📋

Change Log

change.ximg.app

Full git commit history — every change to this project, searchable, with author and timestamp

♟

Chess

chess.ximg.app

The game of kings — pieces, openings, tactics, world champions, and 1,500 years of chess history

🥢

Chinese Food

chinese.ximg.app

Eight regional cuisines and iconic dishes — one of the world's oldest food cultures

🤖

Claude

claude.ximg.app

Anthropic's Claude AI — Haiku/Sonnet/Opus, Constitutional AI, and API quick-start

☢️

Cold War

coldwar.ximg.app

The 45-year standoff — nuclear arms race, proxy wars, space race, espionage, and collapse

🎮

Command & Conquer

cnc.ximg.app

The legendary RTS franchise — games, factions, vehicles, buildings, and lore

🔐

Cryptography

crypto.ximg.app

Hashing, symmetric & asymmetric ciphers, key exchange, TLS 1.3, SSH, PGP, and openssl/gpg command reference

🐳

Docker

docker.ximg.app

Docker command reference and Compose syntax guide

🌐

DNS

dns.ximg.app

Domain Name System reference — record types, resolution flow, dig commands, and DNSSEC

🦈

Suricata

suricata.ximg.app

Suricata IDS/IPS reference — rule syntax, EVE JSON, JA3 fingerprinting, and CLI

🔗

Network Playground

network.ximg.app

Interactive networking sandbox — TCP handshake, packet flow, latency simulator, and DNS resolution

🌍

How the Web Works

request.ximg.app

Enter a URL and watch the full journey: DNS → TCP → TLS → HTTP → render pipeline

💀

DOOM

doom.ximg.app

Pseudo-3D raycaster with enemies, shooting, and a HUD

🐕

FidoNet

fidonet.ximg.app

The Internet Before the Internet — history, how it worked, BBS culture, and the volunteer network that connected 40,000 nodes worldwide

🦅

Freedom

florida.ximg.app

God's Country — beaches, nature, freedom, food, and eternal summer

🌿

Git

git.ximg.app

Linus Torvalds' version control — commands, concepts, branching strategies, config, and full history from 2005

🔥

Grilling

grilling.ximg.app

The art of grilling — grill types, techniques, regional BBQ, temp guide, wood & smoke

🛡️

IDS

ids.ximg.app

Live Suricata intrusion detection feed — alerts, attacker map, and threat stats

🍛

Indian Food

india.ximg.app

Eight regional cuisines and iconic dishes — facts, stats, and history

{}

JSON Reference

json.ximg.app

Syntax-highlighted type reference for every JSON value type

📡

Live Logs

logs.ximg.app

Real-time nginx access logs and SSH honeypot session viewer

🍎

Mac

mac.ximg.app

Apple Silicon, macOS history, Mach kernel deep dive, and Mac hardware

✉️

Mail

mail.ximg.app

Webmail inbox for @ximg.app — live SMTP receiver with Gmail-style email reader

🍄

Mario

mario.ximg.app

Canvas platformer with physics, enemies, coins, and mobile controls

🏎️

Mario Kart

kart.ximg.app

Nintendo's kart racing legend — 11 games, original 8 characters, cups & courses, items, and the full series timeline

🏴‍☠️

Monkey Island

monkey.ximg.app

Complete LucasArts saga guide — all 6 games with screenshots, stats & lore

🐉

Mortal Kombat

kombat.ximg.app

Complete series guide — all 12 games with screenshots, stats & lore

🏍️

Motorcycles

moto.ximg.app

Motorcycle types, legends, and the machines that define two-wheeled culture

📟

Nagios

nagios.ximg.app

Live infrastructure monitor — HTTPS checks for every subdomain plus SSH honeypot port watch

📝

README

readme.ximg.app

The ximg-web project README rendered as a styled web page — architecture overview, subdomain directory, and stack docs

🤖

CLAUDE.md

claudemd.ximg.app

The ximg-web CLAUDE.md rendered as a styled web page — AI assistant instructions, architecture notes, and project conventions

🔐

Passwords

passwords.ximg.app

Generate strong random passwords and passphrases, test strength, see crack times, and learn best practices

🍕

Pizza

pizza.ximg.app

Top US pizza chains and iconic styles — facts, stats, and history

🍣

Sushi

ximg.app/sushi

Japanese sushi guide — nigiri, rolls, sashimi, fish, rice technique, etiquette

🌮

Tacos

ximg.app/tacos

Mexican taco guide — al pastor, birria, carnitas, salsas, and tortillas

🍖

BBQ

ximg.app/bbq

American BBQ — Texas, Carolina, Kansas City, Memphis, woods, and sauces

🍜

Ramen

ximg.app/ramen

Japanese ramen — shoyu, shio, miso, tonkotsu, toppings, and regional styles

🍝

Pasta

ximg.app/pasta

Italian pasta guide — shapes, classic sauces, pairings, and cooking tips

🍲

Thai Food

ximg.app/thai

Thai cuisine — regional styles, curries, noodles, herbs, and street food

🍞

Baking

ximg.app/baking

Baking guide — sourdough, pastry, cakes, cookies, and the science behind them

🌡️

Smoker

ximg.app/smoker

BBQ smoking — times, temps, wood pairings, meats, equipment, and pit tips

🔪

Knife Skills

ximg.app/knife

Kitchen knives — types, cuts, steel grades, sharpening, and proper care

🫙

Fermentation

ximg.app/ferment

Fermentation guide — kimchi, sourdough, kombucha, vinegar, and dairy cultures

🍷

Wine

ximg.app/wine

Wine guide — reds, whites, regions, grapes, food pairing, and service

🍺

Beer

ximg.app/beer

Beer guide — ales, lagers, IPAs, stouts, wheat beers, and brewing

🍸

Cocktails

ximg.app/cocktails

Classic and modern cocktails — ingredients, techniques, and glassware

🍵

Tea

ximg.app/tea

Tea guide — green, white, oolong, black, pu-erh, brewing, and ceremonies

🔥

Calories

ximg.app/calories

Calorie & nutrition guide — foods, macros, metabolism, and exercise

📖

Recipes

ximg.app/recipe

Essential recipes — breakfast, lunch, dinner, sauces, and entertaining

🌶️

Spice Guide

ximg.app/spice

Scoville scale, chili varieties, global spice blends, and cooking with heat

🛒

Farmers Market

ximg.app/market

Seasonal produce by season, farmers market tips, and food storage

♠

Poker

poker.ximg.app

Texas Hold'em hand evaluator with odds and a GTO preflop chart

💻

Programming

programming.ximg.app

180 years of code — languages, paradigms, pioneers, and the history that built the modern world

💊

RxFitt

rx.ximg.app

Pharmacy + fitness health coaching — GLP-1 tracking, metabolic labs, body composition, and workout programs

🏙️

SimCity

simcity.ximg.app

Will Wright's city-building legacy — every game, the visionary designer, and Cities: Skylines as its spiritual heir

🏗️

Stack

ximg.ximg.app

Full technical teardown — architecture diagrams, every technology in the stack, and how it all fits together

📊

Stats

stats.ximg.app

AWStats web traffic analytics — per-site visitor counts, referrers, and bandwidth

⚙️

systemd

systemd.ximg.app

systemctl, unit files, journalctl, concepts, and the full history of Linux's init system

🌴

Tampa

tampa.ximg.app

Best eats, interactive map, and live traffic for the Bay City

🖥️

Terminal

linux.ximg.app

Browser shell with ~20 commands and a bouncing Tux

🌐

The Internet

internet.ximg.app

What it is, how America's DOD built it, top 20 protocols, and how it connected humanity

🖥️

tmux

tmux.ximg.app

Terminal multiplexer reference — cheatsheet, interactive pane simulator, annotated config, and full history

👑

Trump

trump.ximg.app

The greatest president in history — fun facts, full timeline, and the legendary presidency

🧭

Nav

nav.ximg.app

Navigation design showcase — five interactive patterns for scaling a nav bar as apps multiply

🖥️

Unix

unix.ximg.app

The OS that shaped everything — Unix history, philosophy, commands, family tree from Bell Labs to Linux, and the people who built it

🥽

VR

vr.ximg.app

Virtual reality — headsets, games, concepts, and 60 years of history from Sensorama to Vision Pro

📺

VT101

vt101.ximg.app

DEC terminal history and ANSI escape codes — the hardware behind every modern terminal

💻

WarGames

wargames.ximg.app

Shall we play a game? — 1983 cold-war thriller guide and WOPR terminal

⚔️

Warcraft

warcraft.ximg.app

Blizzard's fantasy franchise — RTS origins, World of Warcraft, iconic characters, and 30 years of Azeroth lore

🪵

Woodworking

wood.ximg.app

Species, joinery, hand tools, power tools, and finishing — the full craft

📄

YAML

yaml.ximg.app

YAML syntax reference and live beautifier with syntax highlighting

🐚

Zsh

zsh.ximg.app

Z Shell — extended globbing, oh-my-zsh plugins, Powerlevel10k, and Bash differences

📝

Vim

vim.ximg.app

The ubiquitous editor — modes, commands, plugins, and the history from vi to Vim 9

🌐

HTTP

http.ximg.app

The protocol of the web — methods, status codes, headers, and HTTP/1.1 through HTTP/3

🔒

SSH

ssh.ximg.app

Secure Shell protocol — commands, key types, config reference, and hardening guide

🗄️

SQL

sql.ximg.app

Structured Query Language — queries, data types, functions, joins, and 8 major databases

🚀

Space

space.ximg.app

The final frontier — solar system, missions, rockets, and deep space exploration

☕

Coffee

coffee.ximg.app

The world's favorite brew — origins, brewing methods, roasts, and café culture

🗾

Japan

japan.ximg.app

Culture, food, technology, and history — from Jomon 14000 BCE to modern Tokyo

💥

Quake

quake.ximg.app

id Software's dark legend — games, weapons, monsters, maps, and the Carmack era

🎮

Nintendo

nintendo.ximg.app

135 years of play — consoles, iconic games, beloved characters, and gaming history

☠️

Pirates

pirates.ximg.app

The Golden Age of Piracy — Blackbeard, Jolly Rogers, plunder, and the high seas

⚔️

Medieval

medieval.ximg.app

The Middle Ages — knights, castles, crusades, and the forge of modern Europe

⚛️

Physics

physics.ximg.app

The laws of the universe — mechanics, thermodynamics, quantum theory, and relativity

⚗️

Chemistry

chemistry.ximg.app

The central science — periodic table, bonding, reactions, organic chemistry, and biomolecules

🧬

Biology

biology.ximg.app

The science of life — cells, genetics, taxonomy, body systems, ecology, and evolution

π

Mathematics

math.ximg.app

The language of the universe — algebra, calculus, geometry, number theory, and statistics

🦕

Evolution

evolution.ximg.app

3.8 billion years of life — natural selection, Darwin, fossil record, and human evolution

🪐

Orbital Mechanics

gravity.ximg.app

Canvas gravity simulator — solar system, N-body chaos, Lagrange points, escape velocity

〰️

Wave Physics

waves.ximg.app

Wave explorer — transverse/longitudinal waves, interference patterns, sound, Fourier decomposition

🦋

Chaos Theory

chaos.ximg.app

Lorenz attractor, Mandelbrot/Julia fractals, double pendulum — the mathematics of chaos

🦠

Epidemic Sim

epidemic.ximg.app

SIR disease spread simulator — agent-based dots, live curves, interventions, R₀ calculator

⚙️

Explorable Algorithms

algorithms.ximg.app

Interactive sorting, A*/Dijkstra pathfinding, binary search trees, and BFS/DFS graph traversal

🔐

Security Lab

security.ximg.app

Hands-on security education — SQL injection, XSS sandbox, password entropy, JWT decoder

🤖

AI Playground

playground.ximg.app

LLM concepts — BPE tokenizer, temperature softmax, top-k/top-p sampling visualizer

🔤

Token Visualizer

tokens.ximg.app

Watch text split into tokens in real time — context windows, token types, vocabulary browser

🌡️

LLM Temperature

temperature.ximg.app

Drag the slider and watch the probability distribution morph — from deterministic to chaotic

📐

Embeddings Explorer

embeddings.ximg.app

2D semantic clusters, cosine similarity, word analogies (king−man+woman=queen)

🔁

AI Agent Loops

agents.ximg.app

Animated agent loop, tool use JSON, memory types, multi-agent orchestration canvas

📊

Chart Builder

visualize.ximg.app

Build bar, line, pie/donut, and scatter charts from your own data — instant canvas rendering

📉

Statistics Lab

statslab.ximg.app

Distributions, Central Limit Theorem, t-tests, and variance/sampling — all interactive

📈

Regression Playground

regression.ximg.app

Click to add points, fit linear/polynomial curves, visualize gradient descent and residuals

🎲

Probability & Monte Carlo

probability.ximg.app

Monte Carlo π, coin flips, birthday problem, and the Monty Hall paradox — all animated

🏗️

System Design

systemdesign.ximg.app

Animated architectures — URL shortener, social feed fanout, consistent hashing, CAP theorem

⚖️

Load Balancer

loadbalancer.ximg.app

Watch requests distribute across servers — round-robin, least-connections, IP hash, weighted

🌐

CDN & Edge Cache

cdn.ximg.app

Cache hit vs miss timing, Cache-Control headers, global PoP map, invalidation propagation

📬

Message Queue

queue.ximg.app

Animated producer-consumer, dead letter queue, pub/sub fan-out — async processing visualized

🧠

Brain & Neuroscience

brain.ximg.app

Neuron action potential, neural net forward pass, clickable brain regions, cognitive biases

😴

Sleep Science

sleep.ximg.app

Animated hypnogram, circadian rhythm curves, sleep debt calculator, EEG wave stages

🥗

Nutrition & Metabolism

nutrition.ximg.app

TDEE/macro calculator, digestion timelines, glycolysis/ketosis pathways, food comparison table

🏋️

Strength & Fitness

training.ximg.app

Progressive overload chart, muscle diagram, supercompensation curve, SS/5-3-1/PPL programs

💻

Retro Terminal

terminal.ximg.app

Interactive VAX-11/780 BSD simulation — CRT scanlines, phosphor green, boot sequence, cowsay, fortune, banner

🃏

Punch Card

punch.ximg.app

IBM 80-column Hollerith encoder/decoder — interactive Canvas card, click-to-toggle holes, FORTRAN/COBOL samples, computing history

🖥

IBM Mainframe

mainframe.ximg.app

Mainframe history from 701 to z16 — interactive timeline, JCL explorer, batch processing, MIPS table, and COBOL

🌐

ARPANET

arpanet.ximg.app

Animated ARPANET topology — watch the network grow from 4 nodes in 1969 to 213, packet routing animation, and the origin story of the Internet

🔍

Regex Tester

regex.ximg.app

Live regex testing — match highlighting, group extraction, flag toggles, 14 quick patterns, full cheatsheet

🔑

JWT Decoder

jwt.ximg.app

Decode, encode, and inspect JWTs — header/payload/signature, HMAC signing, expiry check, claims reference

⏰

Cron Builder

cron.ximg.app

Build cron expressions — human-readable output, next 10 run times, 16 presets, field breakdown

🎨

Color Tools

color.ximg.app

Color picker, palette generator, contrast checker — HEX/RGB/HSL, harmonies, WCAG AA/AAA

⏱️

Epoch Converter

epoch.ximg.app

Live Unix timestamp display, epoch↔datetime conversion in multiple timezones, date format token reference for Python/JS/Go/Java/SQL

📅

Timespan Calculator

timespan.ximg.app

Date duration calculator, business-day counter with US holidays, and chainable date arithmetic — add/subtract years/months/weeks/days/hours

🧬

DNA

dna.ximg.app

Animated double helix, DNA replication fork, transcription, and ribosome translation with codon table

🔬

The Cell

cell.ximg.app

Clickable animal cell explorer, animated mitosis, membrane transport (passive/active/osmosis), organelle facts

🛡

Immune System

immune.ximg.app

Animated immune response timeline, cell types, antibody Y-diagram with binding animation, vaccine types

01

Binary & Number Systems

binary.ximg.app

Base converter with clickable bit grid, bitwise operations visualizer, IEEE 754 float breakdown, powers of 2 table, ASCII table, bit tricks

</>

How Compilers Work

ximg.app/compiler/

Visual compiler pipeline — live lexer/tokenizer, AST tree diagram, 3-address IR generation step-by-step, constant folding/DCE/CSE optimizations, x86-64 assembly output

🔲

Logic Gates & Digital Circuits

logic.ximg.app

Interactive gate simulator (AND/OR/NOT/XOR/NAND/NOR/XNOR), drag-and-drop circuit builder, truth tables with K-map, 4-bit ripple carry adder, ALU explanation

⚛

Quantum Mechanics

quantum.ximg.app

Wave-particle duality, double-slit experiment, Bloch sphere qubit explorer, Schrödinger's cat — interactive canvas animations

🎹

Web Audio Synth

synth.ximg.app

Playable browser synthesizer — piano keyboard, ADSR envelope, distortion/filter/delay/reverb effects chain, FFT spectrum analyzer

📈

Compound Interest

compound.ximg.app

Finance calculator — compound interest, retirement projections, debt payoff, and FIRE number with animated charts

🏠

Mortgage Calculator

mortgage.ximg.app

Monthly payment, total interest, amortization chart (principal vs interest vs equity), 12-month detail and yearly summary tables

⏰

Retirement Calculator

retire.ximg.app

FI number, portfolio growth curve vs target line, monthly retirement income — with return rate, inflation, and safe withdrawal rate sliders

📉

Inflation Calculator

inflation.ximg.app

Historical US CPI data 1920–2024 — purchasing power erosion chart, cumulative inflation, and custom rate mode

💳

Debt Payoff Calculator

debt.ximg.app

Avalanche vs Snowball — up to 6 debts, payoff dates, total interest paid, payoff order, and dual-line remaining-debt comparison chart

📊

Budget Planner 50/30/20

budget.ximg.app

Needs / Wants / Savings budget planner — actual vs target donut chart, progress bars, surplus/deficit table, and budget health grade

🌐

World Data

world.ximg.app

Real-time world data dashboard — animated internet traffic map with pulsing city nodes, live cyber attack feed with map overlay, fake stock ticker with sparklines & heat map, and live global stat counters

🏛️

Ancient Rome

rome.ximg.app

SPQR — Roman social structure, 9 emperors from Augustus to Constantine, 6 famous battles, 8 engineering marvels (Colosseum to aqueducts), the legion hierarchy, Roman pantheon, and a full timeline 753 BC to 476 AD

💾

BBS

bbs.ximg.app

Bulletin Board Systems (1978–1998) — BBS history, ANSI art & artscene groups, 6 classic door games (LORD, Trade Wars, Usurper), 6 major BBS software packages, FidoNet explained, and a full timeline from CBBS to the web

💻

MS-DOS

dos.ximg.app

MS-DOS (1981–2000) — 18 essential commands, CONFIG.SYS & AUTOEXEC.BAT walkthrough, the 640K memory barrier explained (EMS/XMS/UMB/HMA), 8 legendary DOS software titles, the full boot sequence, and timeline from PC-DOS 1.0 to Windows XP

📡

Modem

modem.ximg.app

The dial-up era (1958–2013) — 12 AT commands explained, baud rate history from 300 bps to 56K, ITU standards (V.21 to V.92), the ISP era (AOL, CompuServe, Prodigy), the anatomy of the connection handshake sound, and a timeline

🖥

Commodore 64

commodore.ximg.app

C64 & Amiga (1982–1994) — C64 hardware specs (VIC-II, SID chip deep-dive, ADSR envelopes), all 16 palette colors, 8 legendary games, demoscene history (raster tricks, FLI/FLD), Amiga model lineup, and a full Commodore timeline

🖥️

OS Simulator

os.ximg.app

Browser-based mini OS visualization — animated round-robin process scheduler, visual RAM heap/stack allocator with fragmentation, virtual file system tree editor, and live CPU/memory/disk/network graphs

🗄️

Database Visualizer

database.ximg.app

Visual database education — interactive ER diagram with clickable table relationships, JOIN type animator (INNER/LEFT/RIGHT/FULL), drag-and-drop SQL query builder, and B-tree index vs full-scan performance demo

⚛️

Physics Sandbox

sandbox.ximg.app

Interactive physics simulations — bouncing particles with gravity/elasticity controls, wave interference with dual-wave sliders, elastic/inelastic collision demo with momentum display, and spring-mass oscillator with real-time phase diagram

⚡

Circuit Builder

circuit.ximg.app

Drag-and-drop circuit canvas with resistors, capacitors, inductors, LEDs, diodes, transistors, and logic gates. Includes DC analysis calculators (Ohm's law, voltage divider, RC time constant) and a component reference guide

📡

Protocol Visualizer

protocol.ximg.app

Animated serial protocol waveforms for UART, SPI, and I²C — configure baud rate, data bytes, parity, SPI mode, and I²C address to see real-time timing diagrams with labeled bits, start/stop conditions, and ACK pulses

🔢

Base64 Encoder/Decoder

base64.ximg.app

Base64 encode/decode with URL-safe toggle, file-to-base64 drag-and-drop, byte count, and one-click copy

#️⃣

Hash Generator

hash.ximg.app

Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes from text or files; HMAC generator using Web Crypto API

±

Text Diff

diff.ximg.app

Side-by-side text and JSON diff with Myers algorithm — added/removed/unchanged lines color-coded, plus JSON-aware structural comparison

🔗

URL Tools

url.ximg.app

URL encoder/decoder, full URL parser (protocol/host/path/query/fragment), and interactive URL builder with live assembly

💰

Savings Goal Calculator

savings.ximg.app

Project when you will reach a savings target — monthly contribution inputs, compound interest simulation, balance growth area chart with goal line, and extra-per-month calculator to hit any target date

🏛️

US Income Tax Calculator

tax.ximg.app

2024 federal income tax calculator for Single and Married Filing Jointly — per-bracket breakdown, marginal and effective rates, after-tax income, optional state tax, and horizontal bar chart colored by bracket

📈

Stock Return & CAGR

stocks.ximg.app

Portfolio growth projector with annual contributions — nominal vs inflation-adjusted dual-line chart, CAGR, total gains, and comparison table at 4%/7%/10% return scenarios

📊

Options P&L Calculator

options.ximg.app

Options payoff diagram calculator for 8 strategies — Long/Short Call/Put, Covered Call, Protective Put, Bull Call Spread, Bear Put Spread — with breakeven, max profit/loss, profit zone shaded green, loss zone red

💱

Forex Currency Converter

forex.ximg.app

Currency converter for 20 major pairs vs USD — live conversion, rate display, bar chart of $1,000 USD equivalent across all currencies, and quick-reference 1 USD grid

🏦

DCF Calculator

dcf.ximg.app

Discounted Cash Flow valuation — up to 10 years of projected free cash flows, WACC/discount rate, terminal value via Gordon Growth Model, waterfall bar chart, IRR calculation, and 3x3 sensitivity table

⏲️

555 Timer Designer

555timer.ximg.app

555 timer astable/monostable calculator with waveform preview, pinout reference, and common application circuits

🔌

Arduino Reference

arduino.ximg.app

Arduino Uno pinout with digital/analog/PWM/SPI/I2C tags, timer/PWM reference, common code snippets, LED current-limiting calculator, and quick reference

🔋

Battery Reference

battery.ximg.app

Battery chemistry comparison, runtime calculator, LiPo C-rating and voltage guide, series/parallel pack designer, and standard cell size reference

⚡

Capacitor Calculator

capacitor.ximg.app

Ceramic cap code decoder, reactance (Xc) calculator, series/parallel combinations, energy and charge calculator, and capacitor type reference

💡

FPGA Reference

fpga.ximg.app

FPGA architecture overview (LUTs/FFs/BRAM/DSP/PLLs), Verilog and VHDL reference with code examples, popular dev boards comparison, open-source toolchain guide, and interactive LUT truth-table visualizer

〰️

Impedance Calculator

impedance.ximg.app

R/L/C impedance calculator for series and parallel RLC circuits, LC resonance and Q-factor tool, L-network impedance matching calculator, and interactive phasor diagram

Ω

Ohm's Law Calculator

ohms.ximg.app

Ohm's law V/I/R/P calculator with animated VIR triangle, power triangle, voltage divider tool, and Kirchhoff's KCL/KVL helpers

🔺

Op-Amp Calculator

opamp.ximg.app

Op-amp inverting/non-inverting/difference amplifier gain calculators, summing amplifier, integrator/differentiator, comparator reference, and LM741/TL071/LM358 pinouts

📈

Oscilloscope Viewer

oscilloscope.ximg.app

Animated oscilloscope with sine/square/sawtooth/triangle/pulse/noise waveforms, Lissajous figures (X-Y mode), FFT spectrum analyzer, and real-time measurements

🟢

PCB Design Reference

pcb.ximg.app

PCB layer overview, IPC-2221 trace width calculator, via size and current calculator, layer stackup recommendations, and JLCPCB/PCBWay design rule reference

🔲

IC Pinout Reference

pinout.ximg.app

Searchable pinout tables for Arduino Uno, ESP32, Raspberry Pi 4, ATmega328P, and STM32F103 with pin type color-coding (digital/analog/PWM/SPI/I2C/UART)

🔆

Power Supply Design

psu.ximg.app

Linear regulator efficiency and heatsink calculator, LM317 adjustable regulator designer, buck/boost converter duty cycle and inductor calculator, and filter capacitor sizing

📊

PWM Reference

pwm.ximg.app

Interactive PWM waveform visualizer with duty cycle/frequency controls, timer prescaler calculator, servo pulse width calculator, and PWM application frequency reference

🟫

Resistor Calculator

resistor.ximg.app

4-band and 5-band resistor color code decoder with visual resistor preview, SMD code decoder, series/parallel combinations, voltage divider, and E24/E96 value tables

📡

RF Spectrum Analyzer

spectrum.ximg.app

Interactive RF spectrum analyzer with modulation visualizations (AM/FM/PM/OFDM), frequency band reference (HF/VHF/UHF/SHF), antenna type guide, and propagation calculator

🔗

SPI Reference

spi.ximg.app

SPI bus overview, interactive timing diagram for all 4 SPI modes (CPOL/CPHA), SPI vs I2C vs UART comparison, Arduino SPI code examples, and common SPI device reference

📟

UART Reference

uart.ximg.app

UART frame visualizer (start/data/parity/stop bits), baud rate and timing calculator, RS-232 vs TTL vs RS-485 comparison, Arduino serial code examples, and parity explanation

⚡

Voltage Reference

voltage.ximg.app

Voltage divider calculator with find-R1/R2 solver, logic level converter reference and IC guide, standard voltage levels (TTL/LVCMOS/RS-232/LVDS), unit converter with dBV/dBu/dBm, and AC mains voltage calculator

📡

Antenna Calculator

antenna.ximg.app

Antenna design calculator for dipole, quarter-wave vertical, Yagi-Uda, and patch antennas — wavelength/frequency converter, gain reference, coax impedance guide, and antenna type comparison

𓂀

Ancient Egypt

ximg.app/egypt/

Land of the Pharaohs — 6 great pharaohs (Khufu to Cleopatra), 6 wonders & monuments, timeline 3100 BC to 30 BC, and an interactive hieroglyph Nile visualization.

🏺

Ancient Greece

ximg.app/greece/

Cradle of Western Civilization — 6 city-states, 6 great philosophers, timeline 776–146 BC, and an interactive ancient Olympics simulation.

𒀭

Ancient Babylon

ximg.app/babylon/

Mesopotamia & the Fertile Crescent — 6 great kings, Hammurabi's Code, timeline 3500–539 BC, and an interactive ziggurat builder.

☀️

Aztec Empire

ximg.app/aztec/

Children of the Sun — Tenochtitlan, 6 great rulers, 6 gods, timeline 1300–1521 AD, and an interactive Aztec Sun Stone calendar.

🐴

Mongol Empire

ximg.app/mongols/

The largest land empire in history — 4 great Khans, 6 conquests including Silk Road control, timeline 1162–1368, and interactive cavalry charge simulation.

⚔️

Viking Age

ximg.app/vikings/

Norse raiders and explorers — 6 legendary Vikings including Leif Eriksson, Norse expansion, timeline 793–1066, and an interactive longship fleet visualization.

✝️

The Crusades

ximg.app/crusades/

Holy War for Jerusalem — 6 major Crusades, 4 knightly military orders, timeline 1095–1291, and an interactive candlelit Jerusalem visualization.

⛩️

Samurai

ximg.app/samurai/

Feudal Japan and Bushido — 6 legendary samurai and shoguns, the 8 virtues of Bushido, timeline 794–1868, and a cherry blossom animation.

☪️

Ottoman Empire

ximg.app/ottoman/

The Sublime Porte — 6 great sultans, Ottoman culture and the Janissaries, timeline 1299–1922, and an interactive Istanbul skyline visualization.

🎖️

World War II

ximg.app/ww2/

The deadliest conflict in history (1939–1945) — 6 key battles from Britain to Stalingrad, 4 key leaders, full timeline, and an interactive WWII radar simulation.

🪖

World War I

ximg.app/ww1/

The Great War (1914–1918) — 6 major battles, 4 MAIN causes, full timeline, and an interactive Western Front trench night scene with signal flares.

🦅

American Revolution

ximg.app/revolution/

1776 and the birth of the United States — 6 Founding Fathers, 6 iconic quotes from Jefferson to Patrick Henry, timeline 1765–1783.

⚙️

Industrial Revolution

ximg.app/industrial/

Steam, Steel & Progress (1760–1840) — 6 revolutionary inventions, 4 great innovators, timeline from Newcomen to Edison, and an interactive steam locomotive.

⚔️

American Civil War

ximg.app/civilwar/

A nation divided (1861–1865) — Union vs. Confederacy stats, 6 key battles including Gettysburg, full timeline, and an interactive battlefield infantry formation simulation.

🎨

The Renaissance

ximg.app/renaissance/

Rebirth of human genius (1300–1600) — 6 Renaissance masters, 6 immortal masterworks, timeline from Giotto to Copernicus, and an interactive Vitruvian Man visualization.

🐪

Silk Road

ximg.app/silkroad/

The ancient highway connecting China to Rome — 6 great oasis cities, 8 categories of traded goods, timeline 130 BC–1453 AD, and an interactive camel caravan simulation.

⛵

Age of Exploration

ximg.app/colonial/

Into the unknown (1400–1700) — 6 great navigators, 4 colonial empires, timeline from Dias to the East India Companies, and an interactive spinning globe with explorer routes.

🌐

CIDR / Subnet Calculator

ximg.app/cidr/

CIDR subnet calculator (IPv4 + IPv6) — network/broadcast/mask/wildcard/host count, IP range to CIDR, and common prefix reference table.

🆔

UUID Generator

ximg.app/uuid/

Generate UUID v1/v4/v7 with color-coded segment breakdown; decode and explain any UUID; bulk generator up to 1000 UUIDs.

¶

Lorem Ipsum Generator

ximg.app/lorem/

Generate lorem ipsum by words/sentences/paragraphs, fake code identifiers and JSON data, and placeholder markdown with headings/tables/code blocks.

📋

CSV Tools

ximg.app/csv/

CSV viewer with sortable columns, CSV↔JSON converter, and synthetic data generator (text/number/date/email/UUID columns).

Md

Markdown Editor

ximg.app/markdown/

Live split-pane markdown editor with vanilla JS renderer, formatting toolbar, syntax cheat sheet, and HTML→Markdown converter.

🔒

SSL / TLS Tools

ximg.app/ssl/

PEM certificate decoder (subject/issuer/SANs/validity/fingerprints/extensions), expiry countdown, and TLS version/cipher reference.

🌀

cURL Builder

ximg.app/curl/

GUI curl command builder — method, URL, headers, body, auth (Basic/Bearer), common flags, live command preview, and a searchable flag reference.

$_

PS1 Generator

ps1.ximg.app

Interactive bash PS1 prompt generator — 15 prebuilt themes (Dracula, Nord, Powerline, Hacker, Retro...), live terminal preview, drag-to-reorder components, color pickers, and one-click copy.