Convert JSON to IPYNB in your browser: fast, private, notebook-ready files
If you work with notebooks long enough, you eventually land on JSON. A teammate emails a .json export. A pipeline drops nbformat into object storage. You run IPYNB to JSON so you can diff two versions in Git, then you need the interactive file back for class on Monday. This page exists for that handoff: you convert JSON to IPYNB without installing a local stack, and you walk away with a standard .ipynb you can open in JupyterLab, VS Code, or Google Colab.
We built the flow around messy reality, not textbook JSON. After a bad merge, notebooks often miss cell IDs or pick up stray commas. Generators sometimes hand you only a cells array. Analysts paste API responses that are almost a notebook but skip the outer wrapper. Toggle repair when the file will not open elsewhere, toggle bare-cell wrapping when you trust the array, and use output stripping when you want a clean shareable file without deleting code by hand.
You get a live preview before you download, so you catch empty sources, wrong cell_type values, and surprise outputs while you still have the editor tab open. Pretty-print keeps the downloaded IPYNB readable in review tools; turn it off when you want a smaller artifact for email or Slack.
Your file never leaves this session for conversion. We do not run your code, we package structure only. Scrub secrets the same way you would before any export, then use this json to ipynb converter online when you need speed more than another CLI tutorial.