Image use, alternative text and visible size
Compare your own uploads and external image embeddeds. For external resources, the normal image processing of the platform cannot achieve the same optimization.
Check the specific image in the respective element or app content. An image can perform different tasks as an informative graphic, linked card or pure decoration.
Where to check the setting in Wix
Select the specific image used or the app image and control its alternative text. After publishing, check the mobile image output. A background image has a different task than a linked product image and requires its own classification.
Example of this specific finding
Illustrative control case: A product tile with 360 CSS pixels wide loads the 4,000 pixels wide original. What matters is the variant loaded in the network protocol, not the file name in the CMS.
follow-up audit in Wix
On the published mobile page, control the loaded image, its alternative and the reserved area. A change in the editor must then be published.
For multiple screen widths, check the selected image URL, file size and sharpness. On high-resolution displays, higher natural resolution may make sense.
Derogations and scope
A detailed view with Zoom may require larger files than a preview list. Balancing quality and transmission effort against actual use.
Reference: published Wix/Wix Studio websites. SEO settings differ by static page, dynamic page type and installed app; do not require a freely managed server configuration.
Classify the general error
Definition, system-independent causes and further correction examples: Check image weight, output size and subject together