CODEWITHSUNDEEP
telegram
habiat
habiat

Reputation: 1434

How do you clear the Open Graph cache of an URL on Telegram?

When I send a new link on Telegram, it automatically reads Open Graph data of the URL and generates a preview of the page.

When the Open Graph data of the same page changes, though, Telegram doesn't update its preview: it has cached the old Open Graph data!

How do you clear the Open Graph cache?

Preview Example:

For the URL https://asp.net/ Telegram is reading the following tags: 

<meta property="og:site_name" content="Microsoft">
<meta property="og:title" content="ASP.NET | Open-source web framework for .NET">
<meta name="twitter:image" content="https://dotnet.microsoft.com/images/redesign/social/large.png">
<meta property="og:description" content="ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript." />

And is generating the following preview:

enter image description here

Upvotes: 87

Views: 61296

Answers (5)

Serge Har
Serge Har

Reputation: 1

Important addition: None of the "meta property" strings (og:site_name, og:title, og:description) should contain the same data. Such strings are not accepted by Telegram bot and therefore Open Graph does not work there. At least that's the way it is at the moment, I tested it today. Maybe someday Telegram will fix it.

Upvotes: 0

UnDiUdin
UnDiUdin

Reputation: 15394

you must chat with [@webpagebot][1] both and tell him in chat

https://theurlyouwanttoupdate.com /updatepreview

Upvotes: 10

habiat
habiat

Reputation: 1434

I've solved this problem by using bitly.com and changing url.

Upvotes: 6

Ramin Bateni
Ramin Bateni

Reputation: 17415

Use @webpagebot

You can send the link [up to 10] you want to update to this Bot and it will scan your site and generate the new image thumbnail, site name and description.

Note: You may need to restart your Telegram client to see the updates

Images are cached too. Update them the same way. Be sure they're specified using Open Graph but note you do not need to use the prefix attribute on your html tag to define the OG namespace.

Second solution:

Use a pattern like the following pattern for your web address:

http://{webpage address}?v={number}

Then replace previous number with a new one to force telegram update og data.

For example use this:

http://www.example.com/mypage?v=3

Instead of:

http://www.example.com/mypage

Upvotes: 150

Valeriy Shvets
Valeriy Shvets

Reputation: 511

Go to @webpagebot and send the link (up to 10) you want to update.

Upvotes: 51

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