Skyneuron sitemap a professional XML sitemap generator that automatically builds, compresses and serves sitemap files fully compliant with the Sitemap Protocol 0.9 standard. Supports multilingual stores, hreflang tags, product image sitemaps, incremental generation, and automatic updates via CRON or admin event hooks.
Content Types:

• Products — with optional full category path in URL
  
• Categories
  
• Manufacturers
  
• Information Pages
  
• Product Images — separate sitemap with image metadata for Google Image Search

Multilingual Support:

• Configurable URL prefix per language (e.g. / for default, /en/, /uk/ for others)
  
• hreflang xhtml:link tags for every language version of every page
  
• Automatic hreflang="x-default" for the default language
  
• Compatible with SEO URL modules that hide the language prefix

SEO Settings per Content Type:

• Priority — 0.1 to 1.0
  
• Frequency — always / hourly / daily / weekly / monthly / yearly / never

Exclusions & Filters:

• Exclude specific product IDs or category IDs by comma-separated list
  
• Skip out-of-stock products (quantity = 0)
  
• Incremental mode — generate only pages modified in the last N days, for fast daily updates

Automatic Regeneration (Event Hooks):

• Products — on add, edit, delete
  
• Categories — on add, edit, delete
  
• Information pages — on add, edit, delete
  
• Manufacturers — on add, edit, delete

Each type is independently toggled. Settings are read directly from the database in the event context — guaranteed to work regardless of OpenCart's config loading order.
File Output:

• All chunk files stored as .xml.gz (gzip compressed) — 10-15x smaller than plain XML
  
• sitemap.xml index file can be placed directly in the webroot for standard discovery
  
• Chunk files stored in a configurable subfolder (default: /sitemap/)
  
• Automatic .htaccess with correct Content-Encoding and Content-Type headers
  
• Sorted index: products → categories → manufacturers → information → images

Admin Generator:

• One-click generation per content type or all types at once
  
• Real-time progress bar, per-type mini bars, elapsed timer and live log
  
• Preview first 20 URLs from any generated file without downloading
  
• Delete all files with one click

CRON / Scheduling:

• Dedicated CRON URL with secret token for each content type
  
• Token regeneration with one click — all CRON links update instantly
  
• set_time_limit(0) — no timeout on large catalogs
  
• Lock file prevents parallel CRON runs from corrupting output

Technical:

• Cursor-based pagination (no OFFSET) — stable performance on catalogs of any size
  
• Batch DB queries for images, product names and category paths — eliminates N+1 queries
  
• Admin panel only — zero impact on storefront performance
  
• Does not modify any core OpenCart files
  
• No OCMOD or vQmod required
  
• Standard Bootstrap 3 markup, consistent with OpenCart admin design
  
• Compatible: OpenCart 2.3 - 4
  
• PHP 7.2+

Contact the Developer & Support
If you have any technical questions regarding the installation or configuration of the module, notice any issues with its functionality, or have suggestions for improvements and feature extensions — please feel free to contact our team directly.
We are also open to discussing custom modifications tailored to your specific needs, compatibility questions with other solutions, and potential collaboration opportunities.
For prompt processing of all inquiries, please use the single contact email address:
marketplace@skyneuron.com