Thumbnail icon when sharing

So I’ve had a custom theme (like the older method, not done via admin settings) for a while, and although I believe I’ve replaced all of the NC logo icons for logo, apple-touch, etc, etc, etc, when I share a link to a file, it still - basically a year later (so no cache) - shows the NC logo:

You’ll have to take my word for it the SVGs have been replaced as I can’t preview them:

I’ve gone through the source looking for it, but haven’t been able to locate it.

Any ideas?

NC: 11.0.3

I have just double checked (since I use the same “external” theme method) and for me it still works. My image file is:

/var/www/nextcloud/themes/[theme name]/core/img/favicon-fb.png

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Oh interesting! Do you have one for the other social networks too?

This same file works for example with FaceBook, Skype and even here on this forum.

See the link below of a test file.

UPDATE: Link removed since not active anymore

Hmm, doesn’t work for me at all as yet. We shall see if caches clear today…

hello im facing the same issue and i did replace all files yet it didnt update when i do the sharing

You have done the following:

  1. Create /var/www/nextcloud/themes/[theme name]/core/img/favicon-fb.png
  2. Clear cache with:
    a. APCu -> Restart Apache2
    b. Redis -> Run command redis-cli flushall

strange in mobile its get the update but when i share in web and give the link in skype or whatever chat it doesnt!

im not good in apache sorry :frowning:

I’m suffering the same issue.

How did you get rid of it?

Same issue here on nextcloud 16 when sharing to whatsapp :frowning:

Same issue on Slack, I changed the logo in the Theming section (including Logo + Favicon), but when pasting a link on nextcloud I see this logo:

When looking at the source page of the link I see:

<link rel="icon" href="/apps/theming/favicon?v=18">
<link rel="apple-touch-icon-precomposed" href="/apps/theming/icon?v=18">
<link rel="mask-icon" sizes="any" href="/core/img/favicon-mask.svg" color="#0082c9">
<meta property="og:type" content="object"/>
<meta property="og:image" content=""/>

I overwrite directly the favicon-fb.png in core/img, but still slack is showing the nextcloud logo. Restarted nginx & php-fpm. But not redis-flush (I think it is use only for file-locking)?


1 Like

i have the exact same problem, looking for solution.

i have found that facebook has a tool that troubleshoots this issue -

and the tool showed below warning to me:

seems that we have missing tags for our icons to work?

after reading the guidelines from facebook, i have uploaded a logo with at least 200 px on one side and it worked!

hope this helps those with problems getting the logo thumbnails.

Hi, I’m suffering from the same issue when I customize my nextcloud via Theming Apps:

here the HTML, the return empty image

Hello Community,

Can someone help me to solve this issue, I did many googling but I didn’t know why the image not generated when I make a change in theming application.

as you see above nextcloud return empty picture.

Thanks in advance for your help.

Did anyone solve this issue?