Wordpress Video Thumbnail

[Bazara Benavides]

PostThumbnails is a theme feature introduced with Version 2.9. It was quickly changed to Featured Images with Version 3.0. Post Thumbnail, now Featured Image, is an image that is chosen as the representative image for Posts, Pages or Custom Post Types. The display of this image is up to the theme. This is especially useful for "magazine-style" themes where each post has an image.

Themes have to declare their support for post thumbnails before the interface for assigning these images will appear on the Edit Post and Edit Page screens. They do this by putting the following in their functions.php file:

If your theme was successful in adding support for Post Thumbnails the "Featured Image" metabox will be visible on the on the Edit Post and Edit Page screens. If it isn't, make sure "Featured Image" is enabled in the screen options on the top right.

After clicking the "Set featured image" link follow the same steps as inserting images in Posts and Pages. Once you have selected the featured image and determined the image settings, click on the blue "Set featured image" button, to set it as the featured image for your page or post.

The default image sizes of WordPress are "thumbnail" (and its "thumb" alias), "medium", "medium_large", "large" and "full" (the image you uploaded). These image sizes can be configured in the WordPress Administration Media Screen under Settings > Media. If your theme enables Post Thumbnails then "post-thumbnail" is also available and this is the default when using Post Thumbnails. This is how you use these default sizes with the_post_thumbnail():

I setup WordPress on my own server and it's up and running...one thing that I have noticed is that WordPress doesn't generate any images I upload. Usually when I upload an image through WordPress it will generate a thumbnail, medium, and large sized image. WordPress installed without error and everything else is working fine. I have tried to rebuild the thumbnails, but that doesn't work :-(

With reference to Josh Rodgers' answer, I had to log into my server's CPANEL, under "Software and Services", depending on how your server is set up, there is "Select PHP Version", then tick the "gd" box, save, and refresh your wordpress post or media page, then retry the upload.

I was having the same problem on my new server install with Ubuntu 16.04 and PHP 5.6. The problem is that Wordpress relies on the PHP GD module in order to generate the thumbnails. The insight from Josh led me to install the GD module using this command via SSH:

My site was throwing a hard 500 error after the initial upload of a few files - so apparently the thumbnail process.I got a couple files to fully upload individually, but not this one.

As with other people, I could see the file in the library, but without a preview image, and it did not have any usable images for the file if I tried to insert it.

I am trying to get my thumbnails to NOT be compressed at all. My uploads are nice and colorful, but the thumbnails gets very visibly duller and poorer quality. I already added this code to my function.php file in my child and parent theme:

Setting jpeg_quality will not disable compression because it does not disable processing. JPEGs will be always compressed, and they are almost never lossless, not even at 100 - it does not stand for "100% original quality".

What happens here, is that WordPress's default image processing does not respect color profiles, just as @Bigue Nique says.

To add some insight: WP ignores color profiles from the images and the browser sees them as unprofiled/sRGB. The loss of saturation is a typical artifact when the AdobeRGB profile is stripped.

As a photography student I had made that mistake for years (luckily, my pictures were usally grey ;).

It still makes sense to shoot and use AdobeRGB, or other color profiles, just make sure to convert to sRGB (important: convert to profile, not apply profile) at the very last step of your workflow. You can then even strip the potentially embedded sRGB profile and thus make the image unprofiled, since it does not make a difference in appearance - this is what image size optimizers do to save a couple of bytes.

I'm sure there are plugins to do the profile conversions automatically, but it is good practice to be aware of color profile issues when you publish to the web (say, forums or customers who don't have that plugin).

Image compression should not dramatically affect the colors and tones of the picture. When you witness a significant shift in color, hue, saturation or contrast, it might be a color space issue (as the asker pointed out herself).

Have you tried deleting the gallery and then adding it in again?

I would start there and see if it fixes things up. Make sure you choose the number of columns you want with the thumbnail grid gallery.

Featured images, also known as post thumbnails, are a well-known WordPress feature supported by most themes. They are the primary image for your blog posts, and they often appear next to the heading on your home page and social media.

Featured images are a WordPress theme feature. Almost all WordPress themes come with built-in support for featured images and display them beautifully across different areas of your WordPress website.

Note: All these sources provide high-resolution images, which means they are large in file size and dimensions. You will need to optimize images for the web before using them as featured images.

The featured image is a popular feature supported by almost all WordPress themes. In rare situations, you may come across a theme that does not support featured images, or you may not like how they handle feature images.

However, when you set a featured image, it will not automatically display in your WordPress theme. To display featured images in your theme, you need to edit your templates and add this line of code where you want to display the featured image:

The above code is the basic function that you need to add featured image support and display featured images in your theme. To set the image size for featured images you upload, you need to add this line of code to your functions.php file or WPCode snippet.

All you have to do is remove the image from the content area and only use the featured image meta box to add the featured image. For more on this topic, see our article on how to fix the featured image appearing twice in WordPress.

If you or another author on your blog forgot to set one and published the post, then it will appear without a featured image. This will look bad and inconsistent, which is not good for user experience.

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For if anyone want to add default featured image to blog post so that newly posted posts will be assigned that default images as thumbnail pending the time to use the actual image intending for the post.

I have a problem with featured image. Everytime I upload a new picture for a profile, the picture does not turn into a thumbnail in the list of profiles. Is it a problem of the theme or the definition of the wordpress?

Most likely your WordPress theme does not display featured images correctly. Try switching to a default WordPress theme like Twenty Seventeen, if it displays your featured images then you can contact your theme developer for support.

Hello , I use WordPress witn Fashionistas theme intsalled, but I understand the featured image is not showing the full image uploaded. I would like to have the full image appear instead of the default theme sizing of the featured image. What settings I should do in the Admin panel ?

Thanks in advance.

And really I hope you can help me.

What do I need to do to only have the featured image shown next to each post in the blog roll, but not when you are reading individual posts? Do I insert the line of code into my index.php file or is there something else? Thanks!

Hi,

is it possible to embed a code as a featured image? For example: Getty images offers free pictures for bloggers. Once i copy the code its easy to embed in the post, but I need the pictures as my featured image. Is there a way I can do this? Plugin?

Thanks for your help!

WPBeginner is a free WordPress resource site for Beginners. WPBeginner was founded in July 2009 by Syed Balkhi. The main goal of this site is to provide high quality WordPress tutorials and other training resources to help people learn WordPress and improve their websites.

I found a workaround for this thanks to the theme I'm using for WordPress, Salient. They have a "hosted video player" that I initially thought would require us hosting a video ourselves - it works just fine with a HubSpot hosted video, and it also allowed me to use an image as a thumbnail.

Thanks, I have that option ticked as if unticked it shows all thumbnails different sizes and spread all over the place. Have tried every setting I can find, Have even uploaded all photos again cropped the same size and it will still not display thumbnails the same size, in neat columns and rows.

Have added some links on portfolio page for now, thanks for that, never thought about someone clicking the portfolio tab without looking at the drop down list of other pages first. I will do more on that page, just wanted to get the links on for now.

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