Just downloaded my Twitter archive again and converted it to Markdown, including high-res images this time. I suggest you do the same if you want a backup of your data that is independent of Twitter’s servers and free from obfuscated t.co links.

Here’s a quick how-to:
https://matthiasott.com/notes/converting-your-twitter-archive-to-markdown

Converting Your Twitter Archive to Markdown · Matthias Ott – User Experience Designer

Matthias Ott is an independent user experience designer and developer from Stuttgart, Germany. Besides design practice he teaches Interface Prototyping at the Muthesius Academy of Fine Arts and Design, Kiel.

Matthias Ott – User Experience Designer
@matthiasott What a fascinating job you've done with that Twitter-to-Markdown script, Matthias! I'm just half literate when using command prompt, and I've been able to follow every step anyway! Thank you, thank you, thank you!
@cantavest Hi Rosanna! Thank you – but I only wrote down how it worked for me, all the credit for this amazing little script goes to @timhutton !!! 🙌😊
@matthiasott @timhutton Oops! Sorry! I'm still finding my feet around here and didn't realise. Of course it was Tim from GitHub. Thank you so much, Tim!!
And thanks, Matthias, for sharing this wonderful tip!