Blog on redirects (#543)

Author: choldgraf

content/blog/2025/jb1-redirect-generator/index.md

@@ -0,0 +1,42 @@
+---
+title: "Creating a re-usable redirect generator for Jupyter Book 1 migrations"
+date: "2025-11-12"
+authors:
+  - Chris Holdgraf
+categories:
+- upstream-impact
+tags:
+- learning
+- open-source
+- jupyterbook
+---
+
+When migrating documentation from [Jupyter Book](/collaborators/jupyter-book/) 1 to Jupyter Book 2, URL structures change dramatically and break external links. We spent some time createing a re-usable tool to solve this problem across multiple projects.
+
+You can check out the tool below:
+
+https://github.com/jupyter-book/jb1-redirect-generator
+
+It's designed to be run in a self-contained way by putting the dependencies in `script` metadata at the top.
+This means you can run it like this:
+
+```bash
+uv run https://raw.githubusercontent.com/jupyter-book/jb1-redirect-generator/main/generate_redirects.py
+```
+
+This let's you generate redirects from JB1 -> JB2 URL structures and dump them in a `_build/html` folder with your JB2 built pages.
+
+We tested this out by converting the [Jupyter Governance docs](https://jupyter.org/governance) to Jupyter Book 2 and running it there.
+You can find a noxfile that runs these commands here:
+
+https://github.com/jupyter/governance/blob/bcdae30efdecbe75bc4751ef1fe1e602fe82ee10/noxfile.py#L25-L37
+
+And its use in a GitHub Workflow here:
+
+https://github.com/jupyter/governance/blob/bcdae30efdecbe75bc4751ef1fe1e602fe82ee10/.github/workflows/deploy.yml#L39-L44
+
+## Learn more
+
+- [jb1-redirect-generator repository](https://github.com/jupyter-book/jb1-redirect-generator)
+- [Jupyter governance PR using the new script](https://github.com/jupyter/governance/pull/307)
+