Case Study: Leboncoin achieves market-specific SEO improvements with Oncrawl's data-driven granular segmentation

Powering SEO For Classifieds Sites With Data and Granular Segmentation

leboncoin, France’s leading classifieds site with tens of millions of users and millions of active ads, faced complex SEO challenges: managing ~32 million ad URLs, deciding which pages to index, and applying different SEO best practices across distinct markets. To tackle this, they worked with OnCrawl, using OnCrawl’s SEO data platform and segmentation features to analyze the site by market, page type and template.

Using OnCrawl, Julien Crenn segmented the site, cross‑analyzed crawl logs, Google Search Console and analytics, and made targeted templates indexable; this delivered measurable impact — the average time to first organic visit improved 15× (from about 45 days to ~3 days), visibility gains across five markets, confirmation that Analytics underreported visits using log data, two coordinated marketing campaigns, and three enhanced SEO dashboards.

Leboncoin

Julien Crenn

Search Engine Optimization Manager