Algorithm Visualizer

LeetCode Hot100 algorithm notes

IEEE 754, Monte Carlo, entropy, and prime stripes

Seven essays from pathfinding to game AI

Graph theory, constraint solving, and puzzle math

BMI, calories, fitness calculators, ovulation tracking and BAC estimation — everyday health numbers in one toolkit.

Interactive demos of classic ciphers and how blockchain blocks, hashing and consensus work.

Turn text into ASCII character art

Base64, URL, case, radix and Morse codecs

Color picker, palettes, gradients and contrast checker

Countdowns, time zones, timestamps and date calculations