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

XLSX Sparkline Injector

Inject Excel sparklines into worksheet cells by patching XLSX sheet XML with sparkline definitions

Format Conversion

XLSX Chart Embedder

Embed generated chart images into Excel workbooks using workbook data ranges for bar or pie chart reports

Format Conversion

XLSX Conditional Formatting Rule

Batch-apply conditional formatting rules such as threshold highlights, data bars, and color scales to Excel worksheets

Format Conversion

XLSX Named Range Injector

Create or update workbook-level named ranges so formulas, validations, and reusable templates can reference stable Excel names

Format Conversion

XLSX Formula Injector

Fill formulas down worksheet columns and optionally lock formula cells for protected, template-friendly Excel workbooks

Format Conversion

XLSX Sheet Theme Pack

Apply consistent colors, fonts, borders, and header styling to Excel sheets and export branded multi-theme reports

Format Conversion

XLSX Print Setup Pack

Apply paper, margins, scaling, repeating titles, and header/footer print settings to Excel workbooks in one pass

Format Conversion

XLSX Data Validation Dropdown

Batch-create dropdowns, dependent cascading dropdowns, and input prompts in Excel workbooks using data validation rules

Format Conversion

Fractal Dimension: Box Counting Method

Interactive exploration of fractal dimension estimation using box counting method with real-time visualization

Law of Cosines Visualization

Interactive visualization of the Law of Cosines with draggable triangle and step-by-step proof

Motherhood Penalty & Fatherhood Premium

Understanding how parenthood affects career trajectories differently for men and women

Six Thinking Hats / 六顶思考帽

Interactive visualization of Edward de Bono's parallel thinking method

Lateral Thinking: Visual Learning Lab

Learn lateral thinking through interactive graphics and cases: challenge assumptions, reverse logic, extreme assumptions, and quantity-first ideation.

Two-Sided Markets Economics

Understanding network effects and pricing strategies in platform economics - Interactive exploration of network externalities, skewed pricing, and growth flywheel

IFS Iterated Function Systems

Explore the generative art of self-similar fractals using chaos game and deterministic iteration methods

Attractor Basin / 吸引子盆地

Visualization of basins of attraction for multiple attractors on the complex plane

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