Build a Podcast Episode Image Extractor with GPT

1. Get the RSS of this podcast

Thanks to

https://medium.com/彼得潘的試煉-勇者的-100-道-swift-ios-app-謎題/236-利用-apple-podcasts-網站開發有趣的-podcast-app-99b057270be1

First, find the Apple Podcast URL of the podcast

https://podcasts.apple.com/cn/podcast/独树不成林/id1711052890

Pay attention to the id part

Then append the id to the end of this URL

https://itunes.apple.com/lookup?id=

To get

https://itunes.apple.com/lookup?id=1711052890

Open it in a browser to get a JSON file.

Open it with a text tool (or use a JSON tool such as https://www.json.cn/)

Find feedurl

https://feed.xyzfm.space/y9qnpfdrctnx

This is the RSS.

2. Find the cover images

Open the RSS link in a browser, and look for sections like the one below — those are the cover images

<itunes:image href="https://image.xyzcdn.net/Fgd_z5yexkQF_GB0LF4Xncqqf8CU.png"/>

3. Develop with GPT

Implement an HTML+JS-based tool
The page includes the following sections
1) A text box to input the podcast's RSS URL
2) A text box that fetches the RSS content from 1), and also allows manual input of RSS content
3) A text box that analyzes the content of 2), lists the URLs of all cover images. It should allow manual editing to add or remove entries
4) Display the images corresponding to the URLs in 3)

Example:
https://feed.xyzfm.space/y9qnpfdrctnx is a podcast's RSS URL, which will be entered into 1)
1) fetches the RSS data in XML format, which is then filled into 2)
2) contains elements like <itunes:image href="https://image.xyzcdn.net/Fgd_z5yexkQF_GB0LF4Xncqqf8CU.png"/>, and https://image.xyzcdn.net/Fgd_z5yexkQF_GB0LF4Xncqqf8CU.png should be filled into 3)
4) displays the images corresponding to the URLs in 3)

Send these requirements to GPT.

The result I got is quite satisfying.