Case Study: Papernest achieves improved ROAS, 3% higher conversions and €14,000/month savings with Opticks

How one of the fastest-growing European companies improved its ROAS in Google

Papernest, a fast‑growing French home‑services scale‑up, relied heavily on Google Ads for lead acquisition but discovered significant click fraud that was draining budget and skewing performance. To protect their paid media investments they selected Opticks and its ad‑fraud prevention service—particularly valuing Opticks’ automated blacklisting and specialist support—to investigate and stop fake clicks before they impacted campaigns.

Opticks implemented automatic exclusion of fraudulent audiences, blocked invalid clicks, and provided campaign‑level visibility so Papernest could optimize spend toward real users. As a result Opticks helped Papernest save about €14,000 per month, improve ROAS by over 1.9%, boost conversion rate by 3%, reduce invalid conversions from 4% to 0.5% and cut the invalid click rate from 4% to 1%.

Papernest

Giacomo Teodori

Head of Performance Marketing