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Questions tagged [thumbnails]

Automatically generated smallest size of an image.

15
votes
6answers
14k 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 ...
15
votes
2answers
4k views

Generating Thumbnails for video

I have checked and read lot of post about one single issue that is far more complicated than it seems. I have a website that uses a lot of videos taken from wwebsite as on the internet ^^ (services ...
10
votes
2answers
13k 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.
10
votes
3answers
10k views

How To Delete Desired Image Sizes From wp-content/uploads?

My default media setting in WordPress blog is 150x150, 300x300, 1024x1024 respectively for thumbnail, medium, large images. Now I am designing a theme that need different size thumbnail images to show ...
10
votes
1answer
7k 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 ...
9
votes
2answers
3k 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 ...
7
votes
1answer
4k views

How can I upload video, generate thumbnail and convert to different formats?

I haven't used WP in a very, very long time so please bear with me. I'm using v3.3.1 I've used get_children() to display images of a page in a custom template. I then customized a template to turn ...
6
votes
2answers
26k views

How to set thumbnail image for a (child) theme

I've created a basic child image for twentytwelve, and it works as expected. The only issue is that it does not have a thumbnail image in the themes page: How do I set a thumbnail image for my child ...
6
votes
2answers
2k views

New image size version only for the Featured Image file

I'm worried about too many files created when adding a new image size. All uploaded files will generate the new size, I need a specific image size only for the file set as Fetured image, is there ...
6
votes
1answer
496 views

Is there a hook which fires after all thumbnails are generated?

I want to upload the image and all generated thumbnails to another server (as backup). I only found add_attachment, but this is fired right after the image was uploaded and the postmeta table was ...
6
votes
3answers
19k views

wp_get_attachment_image_src always returns full-sized image

https://codex.wordpress.org/Function_Reference/wp_get_attachment_image_src#Parameters leads me to believe wp_get_attachment_image_src( $thumb_id, array(100, 100) )[0] would return a 100x100 thumbnail, ...
6
votes
1answer
459 views

Thumbnails of same size with different crop

Is there any way to generate thumbnails of the same dimensions, but with a different crop? I want to do something like: add_image_size( 'thumbnail_top', 360 , 180 , array ('center', 'top') ); ...
5
votes
2answers
22k views

Add Title Attribute to WordPress Image the_post_thumbnail

i use this code to show post's thumbnail in my site but this code cant show the title Attribute of the thumbnails. how can i add Title Attribute to WordPress thumbnails? <?php if ( ...
5
votes
4answers
21k views

How to Replace YouTube Videos with a “Click to Play” Thumbnail?

I use a lot of embedded videos (via oembed) on my blog, and that can slow down page loads. Is there a way to automatically replace YouTube (and other) videos with a thumbnail (preferably the post's ...
5
votes
2answers
2k views

Cropped featured image replaces original image in gallery

Firstly, I have done my research as thoroughly as I possibly can. Searches have been made, but I have not found any advice or solution as to my exact issue. Ok, time to explain. Currently I am ...
4
votes
5answers
21k views

Make thumbnails in woocommerce replace the main image instead of opening fancybox

I would like the thumbnails underneath the main image on the single product page to replace the main image when they are either clicked or on hover, I prefer hover. Right now the thumbnails just open ...
4
votes
1answer
2k views

How do I delete all generated images from my server except those currently used in posts

I have a new set of image sizes for my site's in-development theme. My server is filled with old image sizes, most of which have never been used. You've heard this one before, right? The Question How ...
4
votes
1answer
3k views

image_resize in wp3.5 change to wp_get_image_editor and wont work

After 3.5 removed support image_resize and now says to use wp_get_image_editor as described here: https://codex.wordpress.org/Function_Reference/wp_get_image_editor Before (when it was image_resize),...
4
votes
3answers
6k views

Settings in 'Media > Settings' is ignored when inserting images

When I upload an image, it is automatically resized as I would expect, however the sizes for inserting the image seem to ignore the settings I've placed in Settings/Media. In my media settings I have:...
4
votes
1answer
3k views

Using Advanced Custom Fields with Wordpress and Lightbox

I am using the ACF Plugin. I want to have a field where I can upload an image, and the result will display the full image in the Lightbox and then then full image will be resized into a thumbnail from ...
4
votes
1answer
6k views

How to Delete All regenerated thumbnails but keep the original ones?

I have a WordPress site which used to weight around 350 MBytes. Then I changed the theme and found that I have to regenerate the thumbnails. So I did it, Twice actually, but Now the problem is that ...
3
votes
2answers
3k views

Stop wordpress from creating multiple size images

I want wordpress to stop making multiple size images cause it's going to eat up my storage space. So I went Settings > Media and then set all the sizes to 0. When I uploaded a new image it still is ...
3
votes
2answers
527 views

No srcset for hard-cropped thumbnails

I am using hard-crop on featured images like this : add_theme_support( 'post-thumbnails' ); set_post_thumbnail_size ( 635, 200, true ); I have no other plugin installed, not even Jetpack. No matter ...
3
votes
5answers
4k views

Can I attach a document (eg: PDF) but have a JPEG as a thumbnail?

Is there a built-in feature or plugin that allows you to attach a document to a post or page such that the actual attachment file is one thing (eg a PDF) but the thumbnail images are another (eg a ...
3
votes
3answers
364 views

Can WordPress crop only the post thumbnails?

I'm using the post thumbnails feature of WordPress and I have several sizes defined in functions.php. Everything's fine, it works great with Crop Thumbnail to crop them perfectly. I have a question ...
3
votes
1answer
4k views

get_the_post_thumbnail_url with an unregistered size

The official code reference for get_the_post_thumbnail_url states: $size (string|array) (Optional) Registered image size to retrieve the source for or a flat array of height and width dimensions. ...
3
votes
1answer
329 views

Wordpress remove EXIF Data from specific Thumb

Is it possible to hook in to action when uploading and resizing specific size added by add_image_size( 'mini-placeholder', 32 ) for image in Wordpress, and remove EXIF Data, and set quality of this ...
3
votes
1answer
196 views

How to make thumbnail image fit into a div where image dimentions are completely different?

I defined a div which is 200px * 200px for my thumbnails using the code below in my index.php file: <ul> <?php $my_query = new WP_Query('showposts=10&cat=3'); while ($my_query-&...
3
votes
0answers
77 views

Saving WordPress generated thumbnails in a subdirectory

I.e. an uploaded image image.jpg is stored in wp-content/uploads/2016. WordPress will generate thumbnails named image-150x150.jpg, image-300x300.jpg, and image-1024x1024.jpg in the same directory. Is ...
3
votes
0answers
39 views

How to create thumbnail of different files?

I am storing my uploads in a separate folder and using separate table to save the location in database. I have gone through WP_Image_Editor , wp_image_editor_gd and wp_image_editor_imagick . I also ...
2
votes
1answer
4k views

Display only posts with thumbnail using WP_Query

I'm having hard times with showing only posts which have featured images using the loop. My PHP level is basic and any help will be really useful. So basically this is my original code : if( ...
2
votes
2answers
1k views

Adding uploaded images to editor from metabox instead of default popup uploader

I need to find plugin or create listing of all uploaded images for some post in custom metabox. And i can click to thumbnail for add image to editor in custom format. I downloaded a lot of photos to ...
2
votes
1answer
3k views

Thumbnails on next/previous links in custom post type single.php

I've been successful in using the following code to display thumbnails for next & previous links for normal posts but this does not work at all for custom post types. <div id="cooler-nav" ...
2
votes
4answers
518 views

Detect if image file is a thumbnail

I want to be able to detect if a file at a certain path is a WordPress generated thumbnail. The only distinguishing feature of the WordPress thumbnail, as far as individual files are concerned, is ...
2
votes
1answer
366 views

Changing playlist shortcode thumbnail sizes?

I'm using do_shortcode() to display a custom WordPress audio playlist. By default the playlist will load cover art for each audio file (the attachment's featured image) and change according to what ...
2
votes
1answer
7k views

Why is wp_get_attachment_image_src returning wrong dimensions? [duplicate]

I am using wp_get_attachment_image_src to construct the srcset attribute of an img tag. In that attribute I want to output a comma separated list of image urls along with the image widths. Using the ...
2
votes
2answers
1k views

Setting default thumbnails size & creating multiple thumbnail sizes

Two quick questions. How does default thumbnail size work? if ( function_exists( 'add_theme_support' ) ) { add_theme_support( 'post-thumbnails'); set_post_thumbnail_size( 800, 600, true ); } ...
2
votes
1answer
868 views

Adding a custom field or metabox to the post-thumbnail widget?

Is it possible to add a custom field to an existing "widget" in the backend? What I wanna do is provide a way to have a checkbox to apply a thumbnail that is double the size of the normal one on the ...
2
votes
2answers
2k views

Additional image sizes are not being generated

When I upload an image through the admin interface, the image is only saved at full-size. The other sizes are configured to their default values in Settings > Media. The automatic resized versions are ...
2
votes
1answer
307 views

Is it possible to generate JPEG progressive thumbnails?

I noticed the even if I upload a progressive JPEG in Wordpress media when it generates the thumbnails it creates them in baseline format instead of original progressive format. Is it possible to ...
2
votes
1answer
135 views

Media thumbnail for custom post inside post content

Some media are added to the post but not inserted into post content. How to insert media into post content without doing it manually. I was able to find the following code to display the attached ...
2
votes
1answer
94 views

Cannot get full thumbnail size using the_post_thumbnail

I cannot get the full (unmodified) image size using the_post_thumbnail( 'full' ); I have also tried: the_post_thumbnail(); It still returns the cropped image. I can see that the unmodified size ...
2
votes
1answer
150 views

Custom image sizes only for thumbnails

I solve one problem, I use in template several different sizes of images (add_image_size), but I use them only for thumbnails, it is completely unnecessary to create these sizes for each image ...
2
votes
2answers
1k views

Underscores.me retrieve next / previous post thumbnail in post_nav function

I am using Underscores.me for a project. I'd like to add the featured image (thumbnail) to the previous / next post links. They have a function which I'm trying to edit called THEMENAME_post_nav(). I ...
2
votes
1answer
8k views

Getting blank thumbnails in media library?

I run a Multisite installation with 10 blogs. All the other blogs work fine except for one where any image that's uploaded does not show up in the media library. There's just a blank image instead of ...
2
votes
2answers
6k views

Add_image_size not cropping

I want to make a crop on the images of my blog page that have more than 443px adjust it to 645x443 size, exactly. I used this code: add_theme_support ('post-thumbnails'); add_image_size ('blog-page',...
2
votes
1answer
4k views

Thumbnail and Featured Image With Fixed Sizes?

In my index.php file, I'm trying to create a thumbnail for each post with the size width: 200px and height 142px. And on the single.php, I would ike for the featured image to be width: 598px and ...
2
votes
1answer
772 views

WP 3.4 has missing photo data

I just updated to WP3.4 and discovered that previously available images are no longer "found" by the system. By this I mean that all the image files remain online and accessible, but WP has lost ...
2
votes
1answer
3k views

List category posts - Thumbnails are not displaying

we've been using List Category Posts to display different category posts on one page and it was working great until recently when the thumbnail images disappear. The 'thumbnail=yes' option is there. ...
2
votes
1answer
589 views

How to disable multiple thumbnail generation?

Tried setting the thumbnail size, but left medium + large to 0 0 to disable them, still all 3 were generated. Is there anyway to selectively disable these via functions.php?