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Specify Missing Image Dimensions is a WordPress plugin that helps to add missing width and height attributes to images. This plugin scans the entire HTML page and specify missing width and height to tags.
If you are seeing error like “Image elements do not have explicit width and height” on <a href="https://developers.google.com/speed/pagespeed/insights/" rel="nofollow ugc">Google PageSpeed Insights</a> then this plugin will help you to remove that error by adding missing width and height attributes to the required images.
By adding width and height to the images, Cumulative Layout Shift (CLS) also improves as there will be no more unwanted jumps while HTML page rendering.
<h3>How this Plugin Works</h3>
<ol>
<li>Specify Missing Image Dimensions plugin scans the entire HTML page and finds images with missing width and height attributes.</li>
<li>After finding the images, this plugin gets the image dimensions using getimagesize() function.</li>
<li>After getting the required dimensions, plugin adds the width and height attributes to the images.</li>
</ol>
<h3>Features</h3>
<ul>
<li>Exclude images by image extension</li>
<li>Exclude images by image Name</li>
<li>Exclude images by class</li>
<li>Exclude images by ID</li>
</ul>

Specify Missing Image Dimensions

This plugin helps to add missing width and height attributes to images.

Freemius

Passionate Brains

AEH Speed Optimization boosts site speed with caching, minification, lazy loading, and image optimization to improve performance and SEO.
<h4>Advantages</h4>
1) Serves static assets with an efficient cache policy helps to leverage browser caching.
2) Reduces page loading time of website.
3) Improves user experience as page loads very quickly than before.
4) Decreases total data-size of page.
5) Larger band of predefined file types are covered so it will increase bandwidth of files which can have expiry headers.
6) You can have different expire time for cache base on type of resources.
7) Merge multiple CSS files into one helps reducing http requests and improving page load speed.
8) Async loading of processed CSS files.
9) Minify CSS files which reduce data transfer requirement hence increase page load speed.
10) Inline small footer CSS files which helps to improve page speed.
11) Escape admin users from minification to avoid page builders related issues.
12) Lazy loading support for images, iframes, and videos.
13) Widgets and shortcodes can also be lazy loaded.
14) Lazy loading fully supports responsive images for better performance across devices.
15) Custom placeholder images can be used during lazy loading.
16) Exclude critical elements from lazy loading to ensure essential visuals load immediately.
<h4>Pro Features</h4>
1) Ability to add expires headers to External Resources
2) Adding new file types for adding expires headers
3) Refresh cache periodically
4) Unset Entity Tags
5) HTTP(Gzip) compression
6) Prevent Specific files from caching
7) Removing version info from files
8) Inline google fonts helps to load page faster and reduce external http requests.
9) Merge multiple JS files into one helps reducing http requests and improving page load speed.
10) Minify JS files which reduce data transfer requirement hence increase page load speed.
11) Plugin offers Defer scripts option to speed up rendering process.
12) HTML minification helps to reduce overall data size of page.
13) Automatically convert images to optimized formats like WebP or AVIF for faster delivery without manual effort.
14) Smartly resize and serve images based on screen size and device type to minimize bandwidth and boost speed.
15) Support next-gen formats like WebP and AVIF for superior compression, smaller files, and sharper visuals.
16) Track image optimization stats, savings, and performance improvements directly from your WordPress dashboard.
17) Automatically deliver the perfect image size for every device, ensuring crisp visuals and smooth performance.
18) Optimize images without visible loss in clarity—maintaining pixel perfection while reducing file size.
19) Works out-of-the-box with WordPress and major themes or plugins, no setup hassles or coding required.
<h4>Documentation</h4>
For Plugin documentation, please refer our <a href="https://www.addexpiresheaders.com/documentation" rel="follow nofollow ugc">plugin website</a>.
<h4>Requirements</h4>
1) Make sure that the “mod_expires” module is enabled on your website hosting server.
2) It is necessary to have read/write permission of .htaccess file to plugin. If not then update file permissions accordingly.
3) check status page of plugin for more info.
<h3>Usage</h3>
To use this plugin do the following:
1) Firstly activate Plugin.
2) Go to plugin settings page.
3) Check Files types you want to have expires headers and also add respective expires days for mime type using input box and make sure you enable respective mime type, for which group of files you want to add expires headers.
4) Once you hit “submit” button all options you selected in settings page saved database of website and accordingly .htaccess file will updated and add expires headers for respective selected files.
5) For Minification check respective settings at Minification Tab of plugin settings page.
6) For Lazy Loading check respective settings at Lazy Loading Tab of plugin settings page.

AEH Speed Optimization: Browser Cache, Optimized Minify, Lazy Loading & Image Optimization

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Specify Missing Image Dimensions vs AEH Speed Optimization: Browser Cache, Optimized Minify, Lazy Loading & Image Optimization