In this article
Paste a link into a chat and a card appears with a title, a description and a picture. Something had to go and fetch that page for the card to exist, and which machine did the fetching is the whole subject of this step.
The answer is good news in ordinary chats and a genuine trade-off in Secret Chats — the one place where the convenient behaviour works against the reason you are there.
What you will be able to do after this step
- check_circle Say whose address a website sees when a preview is generated.
- check_circle Explain why previews in a Secret Chat undercut the point of one.
- check_circle Remove or reshape a preview when it is the wrong picture for your message.
- check_circle Recognise the difference between a preview and actually opening a link.
public Telegram's servers do the fetching
In an ordinary chat, your device does not go and load the page. It sends the address to Telegram, and Telegram's own infrastructure requests the page, reads the title, description and image the site publishes for exactly this purpose, and passes the card back to everybody in the conversation.
That has one consequence worth knowing, because it is the opposite of what people assume. The website sees a request from Telegram, not from you. Your address is not in its logs, and a link crafted specifically to record who looked at it records a visit from a data centre rather than from your home connection.
The same design means that when a widely shared article appears in thousands of conversations, the site is not visited thousands of times. The preview is fetched and reused, which is why a link posted in a busy channel does not act as a load test on the publisher.
None of that is a reason to be careless with links, and the next section says why. But the specific fear people have — that seeing a preview exposes them to whoever sent it — does not apply here.
Somebody posts a link in a group and the preview appears on your screen. What does the website's owner learn about you?
The fetch happens on Telegram's side and the result is shared, so a site cannot distinguish you from any other member of the group, and cannot tell you were there at all. This is a real advantage of the design and it is the reason a link in a chat is less exposing than a link in an email. The moment you tap it, of course, you are an ordinary visitor.
You send a link inside a Secret Chat with previews enabled. Who now knows the address?
This is the trade-off at the centre of this step. A card cannot be built without asking the page for its title, and in a Secret Chat that request has to originate somewhere. Enabling previews means the URL leaves the encrypted channel even though the message does not — which, for the narrow set of situations that justify a Secret Chat at all, is exactly the leak you were avoiding. There is a setting for it, and it should be off.
Which of these does removing a preview from a message actually achieve?
Removing the card is presentation. The link is still there in plain text, still tappable, and the page has already been fetched by Telegram either way. Which is fine, because presentation is a real reason: a huge card for a minor reference buries your own words, and a stock photograph chosen by the site is often a worse illustration than none.
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lock The Secret Chat exception, stated plainly
Step 025 described the guarantee: in a Secret Chat, Telegram carries material it cannot read. Link previews are the one ordinary feature that sits awkwardly against that.
A preview card needs somebody to visit the page. If that somebody is Telegram's crawler, then the address — not the message, but the address — has been handed to the service you were specifically routing around. If it were your own device instead, the site itself would see your connection. There is no arrangement where a card appears and nothing leaves.
Telegram makes this a setting rather than a default, which is the right call, and the recommendation is simple: turn previews off in Secret Chats. You lose a picture. You keep the property that made the conversation worth having.
In ordinary chats none of this applies, because the address was already going through Telegram's servers as part of the message. There is nothing extra to protect, and the preview is a straightforward convenience.
photo_size_select_large The card is your message's illustration
Set the privacy question aside and there is a practical one underneath it, because the preview is often the largest thing in your message and you did not choose any part of it.
Before sending, the staging bar above the composer lets you change it: make the image large or small, move the card above or below your text, pick which link is previewed when there are several, or remove it entirely. Step 012 covered that bar; this is one of the things it is for.
Three situations where the default is wrong. A link you are citing in passing gets a full-width card that dominates a paragraph — make it small or remove it. A link that is the point of the message reads better with the card above your comment, so people see what it is before they read what you think. And a site with an unfortunate default image — a logo, a stock photograph, somebody's face — is better illustrated by nothing at all.
In a channel this matters more than in a chat, because the card is the visual identity of the post in a feed. Leaving it to whatever the destination site happens to publish is leaving your own presentation to somebody else.
touch_app Try it now — five minutes
One privacy check and three habits that improve every link you send.
- Turn off link previews in Secret Chats In the privacy settings. If you never use Secret Chats this costs you nothing; if you do, it is the single item on this page with a security consequence.
- Send yourself a link and try the preview controls Saved Messages is the place. Large card, small card, above, below, removed. Knowing the four states exist is most of the benefit.
- Write one line with every link Where it goes and why. This is also the defence against the pattern covered in Step 052: a link whose visible text says one thing and whose destination is another.
- Check how your own channel posts look If you run one, scroll your feed and see which posts are dominated by a card you never chose. That is worth five minutes of fixing.
alternate_email Telegram's own links preview differently
A link to a channel, a group or a specific message is still a link, but there is no outside website involved — Telegram builds the card from what it already knows.
For a public channel that produces a genuinely useful card: the name, the description and the picture, so people can see what they are being invited to before tapping. It is the closest thing the platform has to a business card, and it is one more reason the public description from Step 065 is worth writing properly.
A link to an individual message behaves differently, and the difference catches people out. It resolves only for somebody who can already see that chat. Send a colleague a link to a message in a private group they are not in, and they get nothing useful — no card, no content, no explanation. Step 012 made the same point from the other direction: a link is a location rather than a copy.
An invite link is a third case again. It previews as the room it opens, which means pasting one into a public place advertises the room to everybody who sees the message, not only to the person you meant. Step 023's controls exist for exactly that.
help Common questions at this stage
Why do some links never produce a preview?
Because the page does not publish the information a card is built from, or it is behind a login, or it declines requests from automated visitors. Nothing is wrong on your end and there is no setting that forces one. If a card matters — for a post in a channel, say — the reliable answer is to attach an image yourself rather than hoping the site cooperates.
Can a link tell the sender that I saw their message?
Not through the preview, since the fetch is not yours and happens once for everybody. What does tell them is opening the link, which is an ordinary visit from your device, and the read receipt on the message itself, which Step 017 covered. If you are avoiding being seen to read something, the preview is not the thing to worry about.
Is the preview image stored anywhere?
It is cached so the card can be shown to everybody who sees the message without re-fetching the page. That means a preview can outlive the page it came from — an article deleted last month may still show its old title and picture in a chat. Useful to know when you are relying on a card to say what something was: the card is a snapshot, not a live view.
Does this protect me from a malicious link?
Only from the passive part. Your address is not exposed and nothing from the page runs on your device while it is just a card — but the card is generated from text the site controls, so a convincing title and picture prove nothing about where the link goes. The defence is simple: press and hold to read the actual address before tapping, and treat an unexpected link in any message as a prompt to check rather than to click.
Can I stop previews appearing for everything?
You can remove them per message before sending, which is the control most people want. There is no account-wide switch for ordinary chats, because the card is part of the message everybody in the conversation receives rather than a display preference of yours. The Secret Chat setting is different precisely because there the question is not presentation but whether a request is made at all.
What about links to things on my own network?
An address only reachable from your home or office network will not produce a preview, because the machine doing the fetching is not on that network. That is the expected behaviour and it is also the safe one. If you are sharing something internal with a colleague, the link works for them only if they are on the same network too — a good reminder that a link is a location, not a copy, which Step 012 covered from the other direction.
At a glance
- 1Who fetches it
In ordinary chats Telegram's servers load the preview, not your device.
- 2Secret Chats
Turn previews off there; making one sends the link outside the chat.
- 3Change the card
Make it larger, smaller, above or below the text, or remove it.
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