Technical SEO for large eCommerce catalogues

Why big catalogues stall

Once a store passes a few thousand URLs, filters for size, colour, price and sort order can generate far more crawlable pages than real products. Search engines spend their time on near-duplicate filter pages while important categories are crawled less often.

The symptoms are familiar: categories that never rank despite good content, new products slow to index, and Search Console reporting large numbers of 'crawled - currently not indexed' URLs.

What to fix first

Decide which filter combinations have real search demand (for example 'red silk saree') and give those clean, indexable URLs with unique titles and copy. Keep every other combination out of the index with canonical tags, noindex or by not linking to it in crawlable form.

Flatten the category tree so important pages sit within three clicks of the homepage, strengthen internal links from high-traffic pages to priority categories, and keep XML sitemaps limited to URLs you actually want indexed.

Measuring the result

Track indexed priority URLs, organic sessions to category pages and revenue from organic search against a baseline. On the Shreeman ethnic-wear catalogue, rebuilding the information architecture was part of the work behind +220% organic sessions.