DataArcus

# DataArcus

**Power BI reports designed right, and checked in Power BI, not just generated. Arabic, right to left and the Gulf calendar, next to Microsoft's tools.**

Website: **[dataarcus.com](https://dataarcus.com)** · Contact: [hello@dataarcus.com](mailto:hello@dataarcus.com)

This repository is the source of dataarcus.com: free Power BI tools that run in your browser (nothing you open in
them is uploaded), articles in English and Arabic, and the Power BI Desktop measurements behind the tools.

## Free tools

| Tool | What it does |
|---|---|
| [Power BI Theme Generator](https://dataarcus.com/tools/power-bi-theme-generator.html) | A theme JSON, a matching background and the position of every visual, from your brand colours (right to left too) |
| [Model Health Check](https://dataarcus.com/tools/power-bi-model-health-check.html) | Checks a `.pbit` or a zipped Power BI project for unused columns, slow DAX, missing formats and more |
| [DAX Calendar Table Generator](https://dataarcus.com/tools/dax-calendar-table-generator.html) | A date table with Hijri dates, announced Ramadan and Eid dates, and each GCC country's weekend |
| [DAX Measure Builder](https://dataarcus.com/tools/dax-measure-builder.html) | YoY, YTD, MTD, rolling and Ramadan / Eid window measures, ready to paste |
| [SVG KPI Designer](https://dataarcus.com/tools/svg-kpi-designer.html) | KPI cards as DAX image measures |
| [Licensing Cost Calculator](https://dataarcus.com/tools/power-bi-licensing-cost-calculator.html) | Pro vs PPU vs Fabric capacity, with Copilot requirements and UAE / Saudi prices |
| [PL-300](https://dataarcus.com/tools/pl-300-practice-exam.html) and [DP-600](https://dataarcus.com/tools/dp-600-practice-exam.html) practice exams | Free practice questions with explanations |

## How we check our work

- **Automated tests on every change:** every website test suite (the list is `ALL` in `scripts/tests/run-all.mjs`)
  and the MCP's tests run on each pull request and push to main.
- **Microsoft's own validator:** our test runs check the reports the tools write, on our sample models, with
  Microsoft's report validator. The website's tools don't run it on the reports you make in your browser; the
  DataArcus MCP runs it on your machine on each report before it is written, and in `check_report`.
- **Measured in Power BI Desktop:** sizes, layouts and numbers are measured in Power BI Desktop, never estimated, and
  recorded with the version used.
- **Sourced facts:** prices, dates and Microsoft claims are linked to their source and re-checked. The Gulf calendar's
  announced Ramadan and Eid dates for the UAE and Saudi Arabia, each with its source, are in
  [`scripts/gulf-calendar/DATES-SOURCES.md`](scripts/gulf-calendar/DATES-SOURCES.md).

## Measurements

What was measured in Power BI Desktop, on which version, how, and the quirks found, is in
[`scripts/tests/DESKTOP-TESTS.md`](scripts/tests/DESKTOP-TESTS.md).

## The AI report designer

An AI report designer for Power BI (it works with Claude on your own machine and writes new files only: the one file it ever replaces is its own answers file, after you approve) is in
private beta. Interested? Write to [hello@dataarcus.com](mailto:hello@dataarcus.com).

## Licence

Copyright © 2025-2026 Abdelrahman Mohammed, trading as DataArcus. All rights reserved: the code is published for
transparency, not as open source. See [LICENSE](LICENSE).