Elysia Tools: Tools, Visualizations, and Samples in One Place

Code Complexity Analyzer

Measure cyclomatic and cognitive complexity across multiple programming languages

Development

Database Schema Diff

Compare two database schemas and generate migration-oriented change reports

Development

API Doc Generator

Generate polished API documentation from OpenAPI or annotated comments

Development

Inches to CM

Convert inches to centimeters with configurable decimal precision

Math & Numbers

API Request Code Snippet Generator

Generate cURL and common language code snippets from a request URL, method, headers, query parameters, and body

Development

Meter to Feet

Convert meters to feet with configurable decimal precision

Math & Numbers

OpenAPI to TypeScript Generator

Convert OpenAPI or Swagger JSON/YAML specs into TypeScript API types, request payloads, and response models with configurable output and naming styles

Development

JSON Schema to Zod Schema Converter

Convert JSON Schema JSON/YAML definitions into ready-to-use Zod schemas with nested objects, arrays, enums, and common validation rules

Development

Option Greeks Visualizer

Interactive Black-Scholes option pricing visualizer with 3D price surface, Greek heatmaps, and live parameter controls.

Gödel Incompleteness Explorer

A clearer interactive page about formal systems, axioms, derivations, consistency, and why incompleteness appears.

N-Body Gravity Simulation

Explore celestial mechanics, chaos theory, and energy conservation through interactive N-body simulation. Use RK4 integrator for accurate multi-body gravity system simulation, observe orbital evolution, chaotic phenomena, and gravity assist effects.

Brownian Motion & Random Walk

Explore random processes from physics to finance, Einstein's diffusion theory, and geometric Brownian motion

Forced Pendulum - Poincaré Section

Explore chaotic dynamics through Poincaré sections

Pascal's Law

Interactive hydraulic press simulation - explore pressure transmission, force multiplication, and area ratios

Archimedes' Principle - Interactive Simulation

Interactive simulation of buoyancy, density, and fluid displacement with floating/sinking behavior

Inclined Plane Physics - Interactive Simulation

Interactive simulation of inclined plane mechanics with force decomposition, friction, and motion dynamics

NDJSON Samples

Downloadable NDJSON files from simple to complex for ingestion, streaming, and pipeline tests

3 samples

Parquet File Samples

Downloadable Parquet sample files from simple to complex for ETL and warehouse pipeline testing

3 samples

ODP Samples

Sample OpenDocument Presentation files for slide parsing and conversion tests

2 samples

ODT Samples

Sample OpenDocument Text files for document parsing and layout conversion tests

2 samples

ODS Samples

Sample OpenDocument Spreadsheet files for worksheet parsing and report conversion tests

3 samples

DOCX Samples

Sample DOCX documents for word-processing testing and parser validation

3 samples

XLSX Samples

Sample XLSX spreadsheets for worksheet parsing and data extraction testing

3 samples

PPTX Samples

Sample PPTX slide decks for presentation parsing and conversion workflows

2 samples