Why is Revit slowing down?

February 2025

❝ Hated it when loading every morning. ❞

💥 I found large Revit families have big impact on Revit loading and the model file size.

So, I made a small Revit button that shows a list of families loaded in the model ordered by file size (MB) and allows to delete them.

My (biased) thoughts; it is cool that it also allows to filter the families not being used in the model.

📌 If you want to watch the video:

PS: This tool for pro members in nonicatab.

💻 Coding tip: To measure mb of families, I first exported to a temporary location and measure their file size with os.path.getsize(filepath).

Nonica2026-04-19T12:40:00+02:00April 19th, 2026|

🔍 Revit API 2027 Docs April 2026 ❝ 👨‍💻 I just published Revit API Docs 2027. ❞ Now covering Revit 2020 to 2027. +260.000 indexed pages. Both

Nonica2025-06-14T07:41:20+02:00May 25th, 2025|

👨‍💻 AI Connector | Revit MCP May 2025 ❝ I gave A.I. access to 36 Revit tools to read models live. ❞ 💬 Most A.I. chats for Revit

Nonica2026-01-24T14:09:37+01:00April 9th, 2025|

🔍 Revit API 2026 Docs April 2025 ❝ 👨‍💻 New search & filters. ❞ Besides updating Revit 2026 Api docs in RevApiDocs, I also added a few

Jaime Alonso Candau

Director at Nonica.io | Contributions to RevApiDocs.com, pyRevit or Dynamo.