Vendar ranks 3 of 15 SEO agencies serving Chicago for ecommerce SEO: the ones with documented ecommerce SEO work on file, verified through September 2026. The top three by evidence-weighted score are Orbit Media (76/100), Straight North (68) and Perfect Search Media (67). No paid placements; every position below cites its sources. 12 more Chicago SEO agencies have no ecommerce SEO claim on file yet and are listed unranked.
Ranked agencies have at least one claim from an outside source that names ecommerce work: category and product-page optimisation, faceted navigation, Shopify or Magento platforms, or revenue from organic; official case studies and third-party reviews weigh most, profile tags least. Full rubric 2026.09 and the scoring model: How we rank.
Grouped by the clients named in documented ecommerce SEO work: client reviews and case studies, not the agencies' own positioning. The number is the place in the ranking below.
Grouped by the clients named in documented ecommerce SEO work: client reviews and case studies, not the agencies' own positioning. The number is the place in the ranking below.
“Independent” means a third-party source names ecommerce SEO work. Each profile holds the claims with their sources; the points per criterion behind every position are in the machine-readable feed.
Chicago, IL, USA · team 10-49 · since 2001
HQ in Chicago · From $4,500/month 1 documented
…diamond retailer: fixes to unoptimized keyword targets on category pages and indexability, with sales up 700% in six months and top-three ranking keywords up 633%… (WE Awards)
Downers Grove, IL, USA · team 10-49 · since 1997
serves Chicago from Downers Grove · From $5,000/month no outside source
ProStockHockey.com: …retailer, describes optimizing new and existing product category pages, expanding category structures and resolving technical SEO issues. Organic results reported separately from paid: organic traffic +1,369%… (straightnorth.com)
Chicago, IL, USA · team 10-49 · since 2010
HQ in Chicago · From $5,000/month no outside source
Perfect Search Media's own ecommerce SEO case study for Swig Life, an insulated drinkware brand, describes optimized copy for all category pages and the… (perfectsearchmedia.com)
On the Chicago SEO list, but nothing on file names ecommerce SEO work. One sourced claim moves an agency into the ranking.
No ecommerce SEO claim on file yet.
Only Vendar profile tags name ecommerce SEO; no outside source on file yet.
Sources on file say the vendor offers ecommerce SEO; no case study or client review documents the work yet.
Evidence-weighted ranking 2026.09.1: each agency is scored on the ecommerce SEO query from claims with sources. Evidence for this query 30 · Fit to this query 25 · Capability depth 15 · Reliability 10 · Transparency 10 · Reputation 5 · Market credibility 5, minus penalties; confidence is shown separately. Paid visibility never changes the order of a listing. The points, the claims and the limits behind every position are on its card above; the criteria, penalties, eligibility and ordering rules are on How we rank.
Catalogue sites are won on templates and taxonomy: category pages, faceted navigation, and what happens to a URL when a product dies. Traffic that does not convert is easy to buy and easy to lose.