Image Optimization
The image optimization feature reduces the size of images so that the page is loaded faster.
The Image Optimizer compresses images in your media library to reduce their file sizes. It processes the main image and its generated sizes.
It also generates WebP versions for supported images, helping your pages load faster while preserving image quality. WebP and our optimization technique reduces the size up to %40.
How to Serve an Image as WebP
WebP is an image format developed by Google. The premium version of WP Fastest Cache optimizes the images as well as generates the webp image extension of the images.
Generating webp image does not mean that adding “.webp” extension at the end of the images. If the browser supports WebP images, the images are served a .webp image instead of jpg/png. The operation is done via htaccess so if the web-server is Nginx or Microsoft IIS, WebP does not work.
How to Disable .WebP
Please follow the steps to disable the images to be served via .webp image extension.
1. to add the following lines after <?php which exists at the top of wp-config.php file
define('WPFC_DISABLE_WEBP', true );
2. to save the setting of WP Fastest Cache
3. to purge cache of CDN if you are using
How Revert the Images
The Revert Image tool restores optimized images to their original versions using the backups created during optimization. It lets you undo image optimization for selected images and return them to their previous state.
On the image list, the reduction information is shown.
Exclude Image
You can exclude an image either via the Media Library page or via the Attachment Details modal.
You can exclude an image via the Attachment details modal.
Re-check Images
The Re-check Images tool scans previously optimized attachments in order, from the first to the last. It checks each attachment for images that were not optimized during the initial process.
Any unoptimized images are optimized, and the tool logs each image as it is checked and processed. You can pause and resume the scan at any time.
Auto Optimize
You can optimize images automatically, instead of manually optimizing them via the image optimizer.
This new feature will save time and increase performance. You will no longer need to optimize images from the image optimizer tool after uploading them. Thanks to this new feature, images will be automatically optimized silently, without tiring the server in the background.
How it works?
First of all, you need to copy the cron job rule by clicking the Auto Optimize link. (If you want, you can open the url with a browser and observe how it works)
Second, you need to add the cron job as below. If there are a lot of images that need to be optimized, the cron job should run every minute. However, after all images are optimized, you can change the working period to “every 10 minutes” or “every 15 minutes”.
How to set up a Cron Job in cPanel
How to set up a Cron Job at Hostinger
How to set up a Cron Job in Plesk Panel
Credit System
1 image optimization spends 1 credit. Extra credit is not spent for the dimensions of an image such as thumbnail. You will get 10000 bonus credit when you buy premium version. If you need more credits, you can purchase some.