How does telegram shows the Icon of some websites?

Question

I am working with telegram on windows and its online version on web.telegram.org, when I share a link with my friend Telegram shows the icon or logo of some websites in that message:

Image

The first website is vajehyab.com and it has a favicon too (But do not showing that website icon), and the second is Stackoverflow and as you see the logo of stackoverflow and a litle description shows beside it.

Does websites do something or having some metadata that allow Telegram to access their logo, or it is an static program form Telegram programmers and the set some famous websites logo?

You can learn about the related technology: http://ogp.me/ OpenGraph — m4n0, May 11 '15 at 05:40

score 38 · Accepted Answer · answered May 11 '15 at 06:03

38

Just add these tags to your website

<meta property="og:title" content="Title" />
<meta property="og:site_name" content="Site name"/>
<meta property="og:description" content="Description" />
<meta property="og:image" content="Link to your logo" />

answered May 11 '15 at 06:03

Manikiran

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I added these tags but my website is still not shown in preview. How do you set the link to logo? – Sadık Jun 07 '16 at 13:44
1

You should add something like `` and it usually takes sometime for bots to search your website again for changes in open graphs. – Manikiran Jun 07 '16 at 14:43
7

you can update the preview with telegrams WebpageBot instantly – Sadık Jun 07 '16 at 14:50
it doesn't seem to work with favicon.ico images. Does image format matter? – pii_ke Apr 02 '21 at 03:46
According to https://developers.facebook.com/docs/sharing/webmasters/, only jpeg, gif or png are supported. – Manikiran Aug 19 '21 at 18:37

score 12 · Answer 2 · answered Sep 09 '16 at 11:32

12

As well as adding what @Manikiran proposed you need to add this

<html prefix="og: http://ogp.me/ns#">

and use telegrams @WebpageBot afterwards

answered Sep 09 '16 at 11:32

Dmitriy Kuznetsov

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How does telegram shows the Icon of some websites?

2 Answers2

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