How to save content using Carolus
The smallest possible loop between I noticed something and I actually read it starts with one tap. Saving is the only thing you have to do during the week. Everything else - the Paper, the audio, the counterpoints - happens because of what you saved.
Three ways to do it, on whatever device is in front of you.
Save to Carolus from any app or website on your phone
The fastest path. Wherever you are - news website, podcast player, X, Instagram, a friend's text message with a link - tap the share button and pick Carolus. The save happens in the background. A small "Saved" toast confirms it and the share sheet closes; your Vault has the item before you even switch back.
This is the one to set up first. Open Carolus, follow the share-sheet prompt in onboarding, and you can save from any iOS or Android app from then on.
Here's a video showing just how easy it is. A user is scrolling through the CNBC homepage, sees the story about Samsung's profits, taps Share → Carolus, and within seconds the article is saved to the Vault.
Inside your Vault, Carolus stores the original link so you can return to the article, generates an article summary, highlights key quotes, and finds different perspectives - counterpoints, alternative views, contrasting reading.
The real magic happens when your next Paper drops. The article is featured alongside the other things you saved through the week.
Save to Carolus from a desktop browser
For longer reads at a laptop. Go to carolus.app/save and sign in with your email. From there, paste any article URL and send it straight to your Carolus Vault. Within seconds, the article appears in the app, ready for your next Paper.
Once you have signed in, make it one click. Drag the Save to Carolus bookmarklet into your browser bookmarks bar. When you are reading an article you want to keep, click the bookmarklet and Carolus saves that page to your Vault too.
You do not need to file it, tag it, or remember to come back. Carolus does the heavy lifting from there. The articles you save from your browser will be summarised and integrated seamlessly into your next Paper, delivered whenever you choose.
Paste a link
One of the simplest ways to save to your Vault is old-fashioned copy/paste. When you have a URL, copy it, open Carolus, tap the + button in your Vault, and paste the link. Carolus fetches the page in the background and treats it the same as a mobile share-sheet or desktop save.
What happens after you save
The moment a save lands, Carolus does the quiet work:
- Pulls in the title, source, author, and full text
- Keeps the original link so you can read the source in full
- Generates a one-sentence AI summary
- Infers a few tags so semantic search can find the piece later
- Drops the item in your Vault, ready for your next Paper
You don't need to organise, label, or rate anything. The Paper does that work for you on the day you chose. When something deserves the full read, the original is always one tap away from your Vault or Paper.
On Pro, every saved item also carries a Different Perspectives button. Tap it and Carolus generates counterpoints, alternative views, opposing experts, and contrasting reading - so what you save sharpens your thinking instead of just confirming it. The Vault stops being storage and starts being a thinking tool.
What kinds of things to save
Anything that catches your eye. The whole point of Carolus is to make saving frictionless enough that you can do it on instinct. If something interesting passes your screen and you don't have the time to read it, save it.
Common saves: news articles, Substack articles, podcast episodes (Apple Podcasts or Spotify share), X threads, YouTube videos, newsletter posts, even short-form Instagram or LinkedIn posts. If it has a URL or a share button, Carolus will hold it.
If something catches your eye, that is usually enough.