从GitHub下载Jupyter Notebook异常：Mac端无法正常保存.ipynb文件求助

Hey there, I’ve run into this exact issue before on my Mac, so let’s walk through what’s going on and how to fix it.

Common Causes #

• GitHub’s MIME Type Glitch: .ipynb files are just JSON under the hood, so GitHub should serve them with a application/json or text/plain header. But sometimes (especially with large files or CDN cache quirks), GitHub sends the wrong content type. Safari picks up on this misclassification and defaults to saving it as a Web Archive instead of recognizing it as a downloadable file.
• Safari’s Overzealous File Detection: Apple’s browser has strict automatic file type checking. If it doesn’t recognize the raw content as a standard downloadable format (even if the URL ends with .ipynb), it’ll wrap it into a Web Archive to preserve the "web content" it thinks it’s viewing.
• Corrupted .ipynb Files: If the notebook itself is broken (invalid JSON, missing structure elements), GitHub’s raw mode won’t serve it as a proper notebook file. Safari sees the messy content and can’t map it to .ipynb, so it falls back to Archive formats.

Fixes to Try #

• Right-Click to Download Directly: Instead of using "Save As" from the File menu, right-click anywhere on the raw page and select Download Linked File. This forces Safari to use the filename from the GitHub URL, bypassing its automatic type detection.
• Switch to Chrome/Firefox: Other browsers are more lenient with file type handling. I’ve found that Chrome almost always saves .ipynb files correctly from raw mode without any extra steps.
• Manually Create the File: If all else fails:
  1. On the raw page, press Cmd+A to select all content, then Cmd+C to copy it.
  2. Open TextEdit, create a new document, paste the content.
  3. Go to File > Save, name it with the .ipynb extension (e.g., my_notebook.ipynb). Make sure to uncheck "If no extension is provided, use .txt" in the save dialog.
  4. If Finder hides file extensions, enable them first via Finder > Preferences > Advanced > Show all filename extensions.
• Verify the Notebook’s Integrity: Check if GitHub can preview the notebook normally (just click the .ipynb file in the repo). If the preview fails, the file is likely corrupted—reach out to the repo owner to fix it.

内容的提问来源于stack exchange，提问作者Yu Wang