function adjust_image_sizes_attr( $sizes, $size ) {
$sizes="(max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px";
return $sizes;
}
add_filter( 'wp_calculate_image_sizes', 'adjust_image_sizes_attr', 10 , 2 );
As outlined here:
https://www.smashingmagazine.com/2015/12/responsive-images-in-wordpress-core/
Related Posts:
- How do I disable responsive images in WP 4.4?
- WP 4.4. responsive images browser choosing the “wrong” one
- How to insert pictures without hard coded dimensions?
- Making WordPress Gallery (.gallery-item) Responsive?
- WP 4.4 aspect ratio with responsive image
- How can I serve different images depending on screen size with wordpress
- How to Make WordPress Default gallery responsive on mobile?
- Responsive background images added inline
- Responsive Images – Add srcset attributes to custom Images Function
- Get a list of all image sizes that match aspect ratio of original one
- How to exclude an image size from the WordPress srcset
- Responsive Images Resizing Images
- Featured image (responsive) above content is too small after update to WordPress 4.4
- How to display a different image size for mobile
- WP Responsive images – upload custom image sizes
- Fuzzy Images in WordPress 4.4
- Removing height and width from images with a caption
- How to create ‘Local’ filters for WordPress srcset sizes in template parts?
- Multiple amp-image overlays. How to properly do this in wordpress?
- Fallback for missing srcset images
- max_srcset_image_width doesn’t work as intended
- Using SRCSET with Images and Featured Images
- Custom responsive ‘featured image’ sizes
- One of my image sizes isn’t showing up in srcset
- How to stop WordPress from completely overriding my tags in my templates?
- Adding srcset to an image in ajax
- the_content not showing responsive image attributes srcset or sizes
- Serve different images per screen size and cache possible?
- Disable Media File Image Link On Mobile Devices
- All 3?: Responsive resizing of images + image width of actual image for small images + max-width for all larger images
- Why does WordPress list all image sizes in srcset even if they’re larger?
- Responsive header image
- What’s are some best practices for responsive images (e.g. for section headers)?
- WordPress Responsive Image ( srcset ) not work properly
- Responsive Images – Defining
- Decide how Hero image appears on mobile
- Responsive Featured Images Not Working
- Responsive images with srcset
- Getting extra image links in code with wp_get_attachment_image
- built-in responsive images in content – do I need to add anything to functions.php?
- Responsive images in Bootstrap 4 slider
- WordPress not choosing the right image from srcset
- Responsive Images in WordPress
- Is there a good way to use CMS images with CSS
- Remove one srcset entry from wp_get_attachment_image
- Generate / attach Image srcsets from ACF Image Field
- How to automatically add rounded corners to thumbnails?
- Retina images – custom syntax for inserting images into post content
- show author image in posts
- Replace Woocommerce Images
- Dynamically add titles to post images if they are empty
- SSL: How to make customizer images Protocol Relative in WordPress?
- Is there a way to pull the first featured image in a loop and not all other featured images?
- Change the URL of an image from wp_get_attachment_image_src
- Do I need to resize an image to fit the post?
- Some images not found 404 in localhost
- wp_upload_bits does not retrieve images that do not have an extension
- Convert uploaded GIF to non animated image automatically
- Is it possible to split Default WP Media directory to multiple Folder/Subdomain?
- Add srcset and sizes to older uploads?
- Divi Theme – images not showing on front page [closed]
- Edit image results in copies of file being created
- t5-fresh-editor-stylesheets.php breaks image placement in WP Beta 3 editor
- Find and Use an image’s caption
- Export xml use/import images from theme directory
- Is it possible to change image size used for preview thumnail in Add Media popup
- Images showing in editor but not in post [closed]
- Why are featured images sometimes cropped, and sometimes not
- How do you import images from a URL in your post?
- Multiple post image, echo url (path of image)
- Make featured image be shareable across multiple pages?
- When the new post which has no image published, save the specific image as the featured image ( by category )
- How do I link a featured photo to it’s post?
- How to indent pictures on WordPress blog? [closed]
- Image and shortcode not showing in excerpt
- What is the plugin to import image from URL?
- problem with add_size_image
- How to enlarge thumbnail on mouseover?
- Images not showing after wordpres update 5.6
- Images names not inserting in WordPress Database from Dynamic Add / Remove fields
- Images do not show in the website, but they appear on new tab
- Image Uploader Doesn’t Open Modal in Widget
- Image linking and lightbox
- Which tools should I use for a gallery that uses an API and url for the path of the images?
- Uploaded images not showing properly using wordpress
- Uploaded images appear broken in WP 4.4
- How to best adjust images to a max content width of 490px?
- Get attachment images does not return any attached images
- attachment.php & flexslider—linking thumbnail to specific image
- Add two images with Sweet Testimonials
- Breadcrumbs for Single Image page
- Import existing image as a single post
- How can i make like this structure?
- Stop Attachment image names from taking top level permalink
- Media Library is not loading on grid view in admin panel
- How can I put pictures next to each other and how can I add a location? [closed]
- Media upload error
- Featured Image not displaying [closed]
- Uncaught Error: Call to undefined function file_is_valid_image()
- Understanding responsive imagery