# Links and previews

> Any web address you save opens with a tap, and a saved link shows a small card with the page's title and picture. What gets fetched, by whom, and how to turn it off.

If you save a web address anywhere in The Margin, you can open it from where
you saved it. A link pasted into quick capture, typed into a card title, left
in a shopping item or sent in a message is a link, not a string you have to
select and copy.

## Where links open

Everywhere text you wrote is shown back to you:

- captures in the Inbox
- notes, in Read view and in the note list
- card titles, descriptions and comments
- checklist items, on cards and in standalone checklists
- shopping items and their notes
- an event's place and notes
- chore descriptions and the notes left when one is sent back
- the note on a debt
- chat messages, and both sides of a conversation with Margin Intelligence

An address counts as a link when it starts with `https://` or `http://`, starts
with `www.`, or is a plain domain with a common ending such as
`example.com/page`. Email addresses open your mail app. The full stop or
bracket that ends your sentence is left out of the link. Anything inside
backticks is treated as code and left alone.

A link shows where it really goes. A link can be written with a label, and a
label can say anything. If the label names one site and the address behind it
belongs to another (a label reading paypal.com over an address at a different
site, say), The Margin shows the real address instead of the label. An address
with a username in front of the site name, such as
`https://paypal.com@example.net`, is not made into a link at all, because the
part before the `@` is not where it goes.

A link opens in a new browser tab on the web, and in your phone's browser from
the installed app or the phone app.

### Links inside rows

Most of these sentences sit in something that already does a job when you
press it: a card opens, a shopping item ticks, a checklist line starts editing.
Pressing the link opens the link. Pressing anywhere else on the row does what
the row always did.

### Links while you are editing

In an editor your text stays text, so a click places the cursor. To follow a
link without leaving the editor, hold `Ctrl` (or `⌘` on a
Mac) and click it. That works in notes, card descriptions, comments and the
journal.

Fields that are always a form, such as an event's place and notes, list the
links they contain right under the field. The phone app does the same under a
card's description.

### Copying a link

Right-click a link on a computer, or press and hold it on a phone, to copy it.
In the phone app, press and hold opens the share sheet, which has Copy in it.

## Preview cards

When an item is mainly a link, it shows a card: the site's name, the page's
title, up to two lines of description and a small picture.

Two kinds of item cause a preview to be made:

- a capture that is just an address
- a note whose first line is an address

Two more show a preview that already exists, and never cause one:

- a card with an address in its description (the first one)
- a chat message with exactly one link

The difference is who can see the item. A stored preview, address included,
syncs to every member of the workspace. Captures and notes are already visible
to the whole workspace, so their previews tell nobody anything new. A chat
thread is only seen by the people in it and a board only by its members, so a
link in a direct message or on a restricted board never creates a preview. If
the same address was already previewed from a capture or a note, the card shows
there too.

In the notes list, a note that opens with a link shows the picture as a small
thumbnail.

The picture is the one the page offers for sharing. If it has none, the card
shows the site's icon, and if it has neither, the card has no picture. A page
that gives no title and no description gets no card, because a card that only
repeats the address adds nothing.

> **Note: Offline** A link always opens the browser, with or without a preview. A preview you have
> seen before is stored on your device with the rest of your data, picture
> included, so it is still there with no connection. A preview for a link nobody
> in the workspace has looked at yet appears the next time you are online.

Everyone in a workspace sees the same preview. The first person to look at a
capture or a note causes it to be made, and it then syncs to the others. Each
workspace makes its own: a preview is never copied from, or checked against,
another workspace.

## What gets fetched, and what the site sees

To make a preview, Margin's server reads the page once. Your device never
contacts the site: the picture on the card is a small copy Margin made and
stored with your data, not an image loaded from the site.

This means:

- The site sees one request from Margin's server. It does not see your device,
  your address or your account.
- The site does learn that someone saved its address. For a long, unguessable
  address (a private share link, for example) that request is the first time
  anyone other than you has visited it.
- Margin sends no cookies and no sign-in with the request, so it only ever sees
  what a signed-out stranger would see.
- A preview is kept for 30 days and then refreshed the next time someone looks
  at the item. A link that failed is not tried again for a few hours. A
  preview nobody has looked at for a week after it expired is deleted.
- For each page Margin makes at most three requests: the page, and up to two
  tries at its picture.

## What is never previewed

Links in these still open. They never cause a fetch:

- a chat message or a board card (see above)
- a note behind a PIN, whether or not you have it unlocked
- anything in your Vault
- anything you have hidden from memory
- anything in the "Try it now" sandbox

If an item like this contains a link that a capture or an ordinary note
already has a preview for, that stored preview can still be shown. Nothing new
is requested.

### Links that do something when opened

Fetching a page is the same as visiting it. Some links act the moment they are
visited, and most of them work once: a sign-in link from an email, a link that
confirms an address, a password reset, an invitation, an unsubscribe link. If
Margin fetched one to draw a card, it would use the link up before you did.

So an address that looks like one of these gets no preview. That covers
addresses with words such as `token`, `verify`, `confirm`, `reset`,
`unsubscribe`, `invite` or `callback` next to a code, sign-in addresses that
carry a long code, and any address with a long string of random-looking
characters in it. The check leans toward caution, so now and then an ordinary
page with a long code in its address (some shared playlists and documents)
has no card. The link itself always opens when you press it.

### Limits

Each person can cause up to 300 new previews a day, and a workspace keeps up
to 5,000. Past either, links still open and simply have no card until older
previews expire. Nobody saving links by hand gets near these; they are there
so the feature cannot be used to make Margin's server fetch pages in bulk.

## Turning previews off

**Settings → Profile → Link previews** on the web, or **Settings → Data** in
the phone app. It applies to your account on every device. With it off, nothing
is fetched on your behalf and the cards are hidden for you. Other people in a
shared workspace keep their own setting.

**Where to next**

- [Notes](https://themarginapp.com/docs/notes): the Inbox and quick capture
- [Working offline](https://themarginapp.com/docs/working-offline): what works with no connection
- [Your data](https://themarginapp.com/docs/your-data): the Vault and Hide from memory


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Section: Doing the work. Checked against the running product on October 2, 2026.
Web page: https://themarginapp.com/docs/links. Every docs page: https://themarginapp.com/docs/llms.txt
