Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Only some of Youtube thumbnails load

  • 2 replies
  • 1 has this problem
  • 2 views
  • Last reply by cor-el

more options

When searching Youtube (also in the recommended list) only the 'top screen' thumbnails load. When scrolled down the rest are blank.

When searching Youtube (also in the recommended list) only the 'top screen' thumbnails load. When scrolled down the rest are blank.

All Replies (2)

more options

Plus info:

It's the

  • span class="yt-thumb-simple"
  • img onload=";window.__ytRIL && __ytRIL(this)" src="" alt="" data-ytimg="1" width="246" height="138"
  • span class="video-time" aria-hidden="true" /span /span

part of a Youtube search (removed HTML tags as it seems this comment section takes them too seriously) CSS seems to be the following for the img part:

.exp-search-big-thumbs #results .yt-lockup-tile .yt-thumb-simple img {

   top: 0;

} .yt-thumb img {

   font-size: 13px;
   outline: none;

} hr, html, i, iframe, img, ins, kbd, label, legend, li, menu, object, ol, p, pre, q, s, samp, small, span, strike, strong, sub {

   margin: 0;
   padding: 0;
   border: 0;
   font-size: 100%;
   background: transparent;

} .yt-thumb {

   font-size: 0;

} canvas, caption, center, cite, code, dd, del, dfn, div, dl, dt, em, embed, fieldset, font, form {

   font-size: 100%;

} a {

   color: #167ac6;
   cursor: pointer;

} a, abbr, acronym, address, applet, b, big, blockquote {

   font-size: 100%;

} .yt-lockup.yt-lockup-tile .yt-lockup-thumbnail {

   text-align: center;

} .yt-lockup-thumbnail {

   line-height: 0;

} .yt-uix-tile {

   cursor: pointer;

} .yt-lockup.yt-lockup-tile {

   font-size: 12px;

} .yt-lockup {

   color: #767676;
   line-height: 1.3em;

} menu, ol, ul {

   list-style: none;

} body, input, button, textarea, select {

   font-family: "YouTube Noto",Roboto,arial,sans-serif;
   font-size: 13px;

} body {

   word-wrap: break-word;
   font: 12px "YouTube Noto",Roboto,arial,sans-serif;

} body {

   line-height: 1;
   text-align: left;
   text-align: start;

Modified by Blacktom

more options

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then always make sure such extensions do not block (wanted) content. There is security software that can interfere with loading content, so check that as well.

If images are missing then check that you do not block images from some domains. You can tap the Alt key or press F10 to show the Menu Bar Check the permissions for the domain in the currently selected tab in "Tools -> Page Info -> Permissions".

Check "Tools -> Page Info -> Media" for blocked images

  • select the first image and use the cursor Down key to scroll through the list
  • if an image in the list is grayed and "Block Images from..." has a checkmark then remove this checkmark to unblock images from this domain

Check permissions.default.image on the about:config page to make sure it is default (1).


There is Tracking Protection that can block (wanted) content, so check the location/address bar for special icons.

If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then always make sure such extensions do not block (wanted) content. There is security software that can interfere with loading content, so check that as well.

See also: