№ 01 — Personal Workshop Est. 2026 · Copenhagen Free · Open · As-is

The Workshop

Small, hand-made tools for people who move data around for a living.

About

A small collection of utilities I've built for my own work and decided to share. They tend to solve niche problems — viewing Parquet files without firing up Python, pulling data out of awkward Excel layouts, that sort of thing.

Everything is free. No tracking, no accounts. Each tool ships as a Windows .exe, the full Python source in a .zip (with build.bat so you can rebuild it yourself), and a SHA-256 hash for verification.

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№ Tool Download · Source · Verify
001
PasteNinja icon
PasteNinja v2.81

A small Windows utility for tidying up pasted lists — deduplicate, sort, and reformat values before dropping them into a query or spreadsheet.

Windows 10+ ● 63 MB ● ttkbootstrap · pandas · pyperclip · Pillow · screeninfo
.exe (.zip)63 MB .py source (.zip)79 KB
002
ParquetViewerNinja icon
ParquetViewerNinja v6.0

A small desktop viewer for Parquet files, backed by DuckDB for fast column filtering and lazy row loading.

Windows 10+ ● 80 MB ● DuckDB · PyArrow · pandas · ttkbootstrap · pystray · Pillow
.exe (.zip)80 MB .py source (.zip)249 KB
003
QrNinja icon
QrNinja v2.0

Windows desktop tool for generating styled QR codes — single or batch — with logo support, gradient fills, and preset saving.

Windows 10+ ● 71 MB ● qrcode · Pillow · ttkbootstrap · pandas · openpyxl · tkinterdnd2 · pyzbar
.exe (.zip)71 MB .py source (.zip)159 KB
004
004
PowerBiNinja v1.0

Scans a master Power BI model and a folder of report .pbix files, then maps which model objects each report references.

Windows 10+ ● 37 MB ● PBIXRay · pandas · openpyxl
.exe (.zip)37 MB .py source (.zip)95 KB