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Questions tagged [post-thumbnails]

Post Thumbnail is a theme feature introduced with Version 2.9. Thumbnail is an image that is chosen as the representative image for Posts, Pages or Custom Post Types.

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68
votes
5answers
124k views

How do I set a featured image (thumbnail) by image URL when using wp_insert_post()?

While looking through the function reference entry for wp_insert_post(), I noticed that there's no parameter in the array it requires which will allow me to set the 'Featured Image' for a post, ...
38
votes
3answers
72k views

How come Featured Image isn't showing up in my Custom Post Type?

I have thumbnail support added with the following in my functions.php // Add Thumbnail Support add_theme_support('post-thumbnails'); set_post_thumbnail_size( 140, 140, true ); And I create the ...
36
votes
4answers
27k views

Filter to remove image dimension attributes?

I'm working on a site based on a fluid width css template which sets a max-width on images to the width of the column containing them, and I need to remove the inline width and height dimension ...
34
votes
6answers
79k views

How do I get image url only on the_post_thumbnail

I want to know how to get image url on the_post_thumbnail() Default the_post_thumbnail() <img width="800" height="533" src="http://domain.com/wp-content/uploads/2011/02/book06.jpg" class="...
33
votes
8answers
6k views

User-friendly cropping of post thumbnails?

Is there a way to let my users define the crop area of a post thumbnail? The thumbnails always are existing post attachments, I would rather not create an extra attachment per thumbnail. The post ...
31
votes
6answers
111k views

How to get image title/alt attribute?

In my white theme, there is no alt attribute configured for the home slider post. I added the alt text for the image through the media library interface. I added the following code to display the alt ...
30
votes
6answers
205k views

How to Fix HTTP Error When Uploading Images?

I am using WordPress 3.4.1 on Ubuntu 12.04 using Apache and PHP 5.3.X When I login to the dashboard and add a new post. Then try uploading an image to set as a featured image, I get a red box with a ...
23
votes
3answers
85k views

Add class name to post thumbnail

I'm using post thumbnails to link to a page. Is it possible to add a class name to the post thumbnail image. <li><a href="<?php the_permalink(); ?>" ><?php the_post_thumbnail(); ...
21
votes
5answers
16k views

How can I make add_image_size() crop from the top?

I have a series of posts, all with featured images, but I need to be able to customise the crop top right corner. In this instance, I need them to be cropped from top right, but it would be useful to ...
19
votes
6answers
24k views

No Thumbnails Generated

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 ...
18
votes
7answers
20k views

How to disable WordPress from creating thumbnails?

I've been looking around the net for a long time on how to disable WordPress from creating multiple thumbnails. I've seen in most tutorials to set all the images to 0 in the media section. I have ...
18
votes
3answers
11k views

add_image_size() for specific Post Types

set_post_thumbnail_size( 80, 80, true ); // true for all post types Suppose I have two post types in play on my blog: Post, Video and Product. I may want a 80x80 image size for my posts, but 100x100 ...
17
votes
3answers
54k views

How do you add thumbnail support for custom post types?

the thumbnail support is working for post, but I have another post type called product and it is not working for this. I am trying: add_theme_support( 'post-thumbnails', array( 'post', 'product' ) ); ...
17
votes
7answers
35k views

Stop wordpress from hardcoding img width and height attributes

I'm wondering if there's a simple way top stop WordPress automatically hardcoding featured image height and width attributes, other than using regex... As I'm using a flexible grid for my project (...
17
votes
2answers
6k views

How to retrieve image from URL and set as featured image/post thumbnail

Given a Vimeo ID, I can retrieve a thumbnail from the video via Vimeo Simple API. Rather than call the API every time my page loads I want to set the image as the post thumbnail using the save_post ...
16
votes
2answers
11k views

Programmatically get images by URL and save in uploads folder

I am involved in a large migration from another CMS to WordPress. We have a copy of the database and have worked out how to extract the content and programmatically create WordPress posts from it ...
16
votes
4answers
31k views

How to set featured image to custom post from outside programmatically

I am trying to fetch and insert images outside the wordpress environment to a custom post via PHP. How to move/upload that image to wordpress upload directory year date folder format just like ...
16
votes
4answers
29k views

How do you remove hard coded thumbnail image dimensions?

How can I remove the width and height attributes from the post_thumbnail when inserting with <?php the_post_thumbnail(); ?>? <img width="800" height="533" src="http://domain.com/wp-content/...
16
votes
2answers
29k views

Query posts only with featured image

I want to query 6 posts, but only those which have a featured image attached. I am using meta_key method for this with WP_Query as such: $args = array( 'post_type' => 'post', 'meta_key' =&...
16
votes
7answers
19k views

How do you get the post thumbnail size?

I know how to set the size of a post thumbnail image using the WP Admin Media Settings or using this function: set_post_thumbnail_size( 150, 150 ) But how would one get the image width and height ...
16
votes
1answer
12k views

Setting a post's featured image from an embedded YouTube video

If I create a post that has an embedded YouTube video in it (so all I do is paste the YouTube URL into the post and let Wordpress automatically embed it for me), is there a way to have the thumbnail ...
15
votes
1answer
20k views

How to get featured image's width and use elsewhere in template?

I'm wondering if it's possible in the single.php template to use the width of the post's featured image elsewhere in the page. What I'm trying to do is add a div element on the page with the same ...
14
votes
6answers
9k views

Minimum Dimensions Requirement for Featured Image?

I am creating a baseball website with multiple Authors. From past experience, no matter how well you know someone personally, it doesn't mean they will follow or even read your instructions. That ...
13
votes
2answers
16k views

set_post_thumbnail_size vs add_image_size

What is the difference between set_post_thumbnail_size and add_image_size? Is set_post_thumbnail_size for all images, and add_image_size for sizing images individually? Thanks.
13
votes
1answer
7k views

The the_post_thumbnail without srcset?

The WordPress 4.4 adds multiple image sizes with srcset when using the_post_thumbnail function. Is it possible to get only one image size without srcset ? I understand that it is possible to add a ...
12
votes
5answers
33k views

Get the first image from post content (eg.: hotlinked images)

I am using this code directly from the codex. function echo_first_image ($postID) { $args = array( 'numberposts' => 1, 'order'=> 'ASC', 'post_mime_type' =>...
12
votes
3answers
23k views

How to get all featured image sizes and their URLs?

Is there a standard way to get all the registered sizes of the featured images? One can register different sizes with add_image_size(). What I need, is to get all the sizes of a featured image of a ...
12
votes
1answer
2k views

How to disable generation of default image sizes for some custom post types?

I used custom post type, where 'thumbnail', 'medium' and 'large' sized not required. I need to disable this sizes and create function or plugin, where i can set, which image size is required for each ...
12
votes
1answer
19k views

How to Dynamically Resize WordPress Image On-The-Fly (custom field/theme option)

So - at a client's request, I am in need of being able to resize an image not the standard WordPress way... but from an image pulled-in from a theme option. I can't simply use the custom_header area, ...
12
votes
5answers
5k views

Generate Thumbnails only for Featured Images

I would like to know if there is a simple way (custom code or plugin) to create thumbnail sizes only for images that I intend to use as featured images (index.php, archive.php, etc.) , but not for the ...
10
votes
3answers
11k views

How to add post featured image to RSS item tag?

I am able to add a post featured image to the RSS feed like so: function insertThumbnailRSS($content) { global $post; if(has_post_thumbnail($post->ID)){ $content = ''....
10
votes
5answers
37k views

Can I set a default featured image for a category?

I'm setting up a site with a theme that takes advantage of the "featured image" feature of WordPress. Since my end users are not the most tech saavy in the world, I'd like to set things up so that the ...
10
votes
2answers
50k views

featured image as background image on pages

I'm adding a featured image on my page through the dashboard and I want to use it as a background image on the container div of the page. I want to apply the background image through css, so I am ...
10
votes
9answers
11k views

How to automatically add rounded corners to thumbnails?

I want to created automatically rounded corner thumbnails for a particular project I'm working on, using something like this: http://webdeveloperplus.com/php/create-thumbnail-images-with-rounded-...
10
votes
3answers
28k views

How do I change/modify the_post_thumbnail(); html output?

I'm working on building out a custom theme and have been struggling with this one for a bit. I am trying to modify the HTML output of the_post_thumbnail(); function. I need to do this because I am ...
10
votes
3answers
16k views

How do I regenerate thumbnails?

I just got a new theme and am trying to regenerate thumbnails. I'm having trouble though. I tried using the AJAX Thumbnail Rebuilder but for 5 hours it just said reading attachments. Then I tried the ...
10
votes
7answers
9k views

Display thumbnail only if requested size exists

When I use the functions that get and output the post thumbnail, they will display the requested thumbnail in the size you specify, but if this size doesn't exist they will display the thumbnail in ...
9
votes
1answer
22k views

Upload post thumbnail from the front end

We would like users to be able to upload the post thumbnail when editing posts. How would this be done. I would imagine it would make use of the ajax functions of wordpress. Any ideas, Marvellous
9
votes
7answers
6k views

Delete original image - keep thumbnail?

I'm using a lot of thumbnails but never the original file. To save space, I'd like to prevent the original from being saved on disk but only keep a thumbnail of 100px. How can I do this? Thanks, ...
9
votes
4answers
12k views

Download an image from a webpage to the default uploads folder

I am writing a custom theme/plugin in which I need to download images programatically from certain webpages to the upload folder and then insert them as part of the post. So, I was able to find the ...
9
votes
2answers
4k views

Set custom name for generated thumbnails

Is there any filter available to set the naming convention of those auto generated thumbnails? Something like this: thumbnail_150x150.jpg -> thumbnail-s.jpg thumbnail_300x300.jpg -> thumbnail-m.jpg ...
9
votes
1answer
9k views

the_post_thumbnail responsive srcset not populating with custom image size

I am trying to use the new responsive images feature in Wordpress 4.4 but I keep running into a particular problem when trying to use the_post_thumbnail with a custom image size. It seems I cannot ...
8
votes
4answers
17k views

Post featured image column on admin post list page

I have a client site which accepts images from users as posts. For moderation, we are opening each draft post which obviously takes a lot of time if a hefty amount of images are moderated. So, Is ...
8
votes
3answers
12k views

Remove the Featured Image Meta Box

How can I remove the Featured Image meta box? I've tried using the remove_meta_box function and specifying the boxes ID but it doesn't seem to work like it does for the other native meta boxes. ...
8
votes
2answers
26k views

Get Featured Image via direct sql query

I know you can use the wordpress methods for getting a featured image, however with this particular project I need to get the featured image via mysql query. Can anyone point me in the right direction....
8
votes
8answers
26k views

the_post_thumbnail hard cropping not working no matter what

No matter what I do - I can't get the hard cropping mode in the_post_thumbnail to work. Here's what I have: add_image_size( 'Blog', 300, 300, true ); the_post_thumbnail('Blog'); I've also tried: ...
8
votes
5answers
16k views

Get featured image on Blog Index

I've been trying to use the "featured image" from the home (the blog index) with no luck. It's working for every single page, but it's not working for the home. The code looks something like this: //...
8
votes
1answer
6k views

Can I refresh the thumbnails programmatically?

I would like to be able to refresh the thumbnail cache programmatically, not sure where to hook it, but at present any design changes mean re-uploading loads of images!
8
votes
1answer
357 views

How to change image type for specific size?

I am optimizing a site with large (dozens) quantity of images on page in a grid. For retina support the images are also need to be 2x sized. The low hanging fruit was to make sure the thumbnail sizes ...
8
votes
4answers
4k views

What's the best way to use the Featured Image for responsive web design?

I have a brilliant idea and since WordPress already takes care of some of the work, I just need to find a good method to make this work. I am working on a project that needs to be responsive to all ...

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