Large image files can slow down CS-Cart storefront pages and increase server storage use. Image Compress with Squeezeimg helps optimize your entire media library through the Squeezeimg service API: compress images without visible quality loss, convert them to next-generation formats, and improve page rendering with Lazy Load.
The add-on provides a comprehensive stack of tools, including an XML image sitemap for better indexing, GZIP support, and the ability to process specific folders or automate tasks via CRON.
Key Benefits
- 50–80% smaller images on average: Use Squeezeimg compression to minimize file sizes with configurable quality levels.
- WebP, AVIF, and JP2 conversion: Move beyond traditional formats and convert images to next-gen WebP, AVIF, and JP2 via dedicated tabs.
- Lazy Load for images: Delay image loading to support faster initial page rendering.
- XML image sitemap: Generate a dedicated sitemap link for Google Search Console and Yandex.Webmaster to improve image crawling.
- Automation & Controls: Use CRON tasks for background processing, enable GZIP, and utilize CDN mode for optimized delivery.
- Safety & Flexibility: Process images from selected folders and use "Return original" controls to restore images if needed.
Requirements & Compatibility
- Accounts: A Squeezeimg account and API key are required.
- Free Tier: Up to 1000 images per month are free with one API key; higher volumes require a paid Squeezeimg plan.
- Server Environment: Compatible with Apache2, Nginx, or Microsoft IIS (with Rewrite module).
- Note: The extension will not work correctly if the Google PageSpeed Module is active.
FAQ
- Can I process images that are already on my server? Yes, the plugin includes "Compress & convert" buttons for existing images.
- Is it possible to restore the original images? Yes, the "Return original" settings allow you to retain and restore original files for supported modes.
- Which formats can be converted? The add-on supports conversion to WebP, AVIF, and

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