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Frequently Asked Question
override image sizes
Can I set image size and quality manually for each image?
Yes. You can override the automatically determined optimization per image using HTML attributes. This is especially useful when an image is displayed differently in a page builder than can be detected automatically. Examples:
<img data-neo-optimize--width="320px" src="...">
<img data-neo-optimize--height="180px" src="...">
<img data-neo-optimize--quality="75" src="...">
With the Pro version you can additionally control the retina factor and the algorithm used per image:
<img data-neo-optimize--retina="150" src="...">
<img data-neo-optimize--algorithm="imagick" src="...">
More on the topic:
Relevant FAQs for overriding image sizes
Concise and to the point
What is neo Optimize?The plugin neo Optimize is a WordPress plugin for image optimization. It automatically reduces images to the actually required display size and converts image files to the efficient WebP format. This makes images load faster and your website more performant, which positively affects the SEO ranking.
What makes neo Optimize special is that the original images remain unchanged and the optimized versions are stored in a separate cache directory. In addition the plugin works without credit packages because it optimizes images directly for free on your own server.
Original images remain intact
Does neo Optimize modify my original images?Your original images and database remain fully intact. The neo Optimize plugin only creates optimized copies in the cache and serves those in the frontend. The original files in your media library are not overwritten.
Your WordPress database also remains untouched. When the site loads, only the image URL in the frontend is replaced with the optimized cache version.
If you disable or uninstall neo Optimize, everything returns to how it was before.
Retina factor
What does the retina factor do?The retina factor controls the pixel density at which images are displayed on high-resolution screens. A higher value makes images appear sharper on Retina displays but also increases file size.
By default, the neo Optimize plugin uses a retina factor of 1.5x to enhance rendering of small text, icons and image details on Retina displays. In the Pro version you can set the retina factor individually and compare it directly in the preview.
Clear cache
When should I clear the neo Optimize cache?Under normal operation it is not necessary to clear the neo Optimize cache. The clear cache button can be helpful if you want to remove old image variants after many tests or tidy up after major changes to image sizes in the page builder. Optimized images are then automatically regenerated as soon as they are needed again in the frontend.
If you change image quality, the retina factor or other optimization settings, neo Optimize will automatically create new optimized images. When an image is deleted from the WordPress media library, the associated cache files are automatically removed. Even optimized images that were renamed with neo Rename are automatically cleaned up.
The Clear Cache button is therefore intended primarily as a reset and cleanup function.
WebP and image quality
What image quality should I set?For most websites we recommend a WebP quality of 75%. The WebP format is very efficient, so even lower quality values often still look very good while producing significantly smaller files.
In the settings of neo Optimize you can conveniently select the quality and directly judge it via a preview with file size. This helps you quickly find the right balance between high image quality and fast loading times.
Page Builder
Does neo Optimize work with my page builder?Yes, neo Optimize works with all common page builders. These include, among others, Bricks, Elementor, Divi, Beaver, Oxygen, Breakdance and Gutenberg.
neo Optimize can automatically read the configured image sizes and use them as the basis for optimization. This adjusts the image as closely as possible to the actual display size and caches it for fast delivery.
Optimize neo Draw SVGs
How does neo Optimize optimize drawings from neo Draw?When a graphic was created with neo Draw, neo Optimize can automatically optimize it when serving on the frontend. Unnecessary editor data is removed for display and embedded raster images are converted to the efficient WebP format.
The original neoDraw file remains fully intact and editable. Visitors get a slimmer, faster version on the frontend while you can continue working with the editable original drawing in the backend.
Local optimization
Are my images sent to external servers?The neo Optimize plugin processes your images directly on your own server. Local server functions such as Imagick or PHP GD are used for image optimization. That means you do not need credit packages for external image services or additional cloud processing.
This makes optimization free, privacy-friendly and independent of external providers.