When optimizing images, I encounter an error: libpng warning: Interlace handling should be turned on when using png_read_image. What can I do about it?
The issue is most likely to occur due to the outdated libpng on the server. However, this message can be ignored since it doesn't interrupt the image optimization process in any way. If you would like to eliminate the warning, please update libpng or contact your host provider to do so.
Related Articles
How to optimize images using Google Page Speed Optimizer extension?
In order to optimize images using Google Page Speed Optimizer extension, first, you need to create WebP copies and make sure they are displayed on the frontend. Please follow the steps below to create WebP copies of the images. Step 1. In Amasty → ...
What PageSpeed Insights metrics does Google Page Speed Optimizer cover?
The Google Page Speed Optimizer extension is designed to optimize images and code, which can help to improve certain PageSpeed Insights metrics and enhance the overall website performance. Our extension guarantees up to 97% rating if the fast server ...
How to optimize JS with the Google Page Speed Optimizer extension?
To optimize JS with the Google Page Speed Optimizer extension, please follow the steps below. Step 1. Transfer Magento to the Production mode. It can be done with the next command from the root Magento folder: php bin/magento deploy:mode:set ...
What optimizer settings do I use for images, if I have both the Jet Theme and the Google Page Speed Optimizer module?
The Image Optimizer inside Jet Theme is a Lite version of any optimizer-type modules. So, considering you have the Google Page Speed Optimizer extension, it leads over the optimizer settings inside the Jet Theme. If you have already installed, or are ...
For the image optimization, do we need running optimization all the time when the new image is uploaded?
According to the extension’s functionality, all newly uploaded images will be optimized automatically. Make sure to enable the following setting in Stores → Configuration → Amasty Extensions → Image Optimizer → Automatic Optimization of the Newly ...