An online pet supplies retailer came to us puzzled about why their product category pages weren't ranking despite having thousands of SKUs and genuinely useful content. The answer turned out to be hiding in their own filter menus.
The Situation
Every time a shopper filtered by brand, size, or color, the site generated a brand-new indexable URL, most of them showing near-identical product grids with only a tiny slice of content changed. Multiply that across dozens of filter combinations per category, and the site had accidentally created thousands of duplicate pages competing with each other.
What We Found
A crawl using tools similar to what we cover in our SEO audit checklist turned up over four thousand indexed filter-combination URLs, most with no unique content and no real search demand behind them individually. Google was spending crawl budget on pages that would never rank for anything meaningful, while the actual category pages that deserved attention got crawled less often than they should have.
What We Did
We added canonical tags pointing every filtered URL back to its parent category page, blocked the least useful filter combinations from being indexed entirely, and left only the filter combinations with genuine search volume, like specific brand and size pairings, as their own indexable landing pages with unique intro copy.
The Result
Within two months, Search Console's indexed-page count dropped by roughly seventy percent, which sounds alarming until you see what it actually meant: crawl frequency on the pages that mattered increased noticeably, and the core category pages started climbing for the head terms they'd been stuck on for over a year.
The Takeaway
More indexed pages isn't automatically better, especially on ecommerce sites where filters can multiply URLs endlessly. This is exactly the kind of issue a solid on-page SEO checklist should catch, and it pairs well with fixing how internal links pass authority around a large catalog once the duplication is under control.
Running an ecommerce catalog that might have the same hidden bloat? Talk to Rafenthic about a technical crawl review.