Case Study · E-Commerce

Cortinadecor Achieved a 14% Increase in ROAS With Opticks

Opticks identified invalid traffic across Google Ads and TikTok, enabling strategic budget reallocation and improved conversion rates for Spain’s leading home decoration brand.

14% Increase in ROAS

2 Channels Analysed

Smarter Budget Reallocation based on data

Get Your Free Traffic Audit See the Results

Trusted by 6,000+ businesses · €6M+ in recovered ad spend

The Client

Cortinadecor: Spain’s Leading Home Decoration Brand

Cortinadecor is a leading Spanish e-commerce brand specialising in interior decoration products — from custom curtains and blinds to a wide range of home furnishing solutions. Based in Spain, the company has built a strong online presence serving customers who demand quality and personalised home decor.

With marketing campaigns running across Google Ads and TikTok, Cortinadecor needed to ensure their ad spend was reaching real customers and driving genuine conversions — not being consumed by fraudulent traffic.

Leading Spanish brand in the home decoration industry

Custom products — curtains, blinds, and interior furnishings

Multi-channel acquisition via Google Ads and TikTok

Goals & Objectives

What Cortinadecor Set Out to Achieve

Main Challenge

“Our main challenge was to detect and prevent fraudulent traffic, which was negatively impacting both traffic quality and the efficiency of our advertising investment.”

Main Objectives

“Our goals were clear: to reduce wasted ad spend and improve traffic quality, ensuring that our marketing efforts reached real users with a higher likelihood of conversion.”

— Yolanda Zornoza, PPC Manager at Cortinadecor

The Challenge

A Solid Base With Room to Grow

With campaigns running across Google Ads and TikTok, Cortinadecor aimed to maximise the performance of its advertising investment and ensure the quality of its digital traffic.

Invalid Traffic Impact

Fraudulent traffic was negatively impacting both traffic quality and the efficiency of their advertising investment, making it harder to ensure marketing efforts were reaching real users.

Lack of Visibility

Without dedicated fraud detection tools, Cortinadecor had no reliable way to distinguish legitimate shoppers from invalid traffic across their paid channels.

Room to Optimise

Cortinadecor had a solid traffic base, but saw room to further optimise it in terms of efficiency, quality, and competitive advantage — starting with understanding the true nature of their traffic.

The Solution

Opticks Delivered Deep Analysis and Automated Protection

From the very start, Opticks provided responsive guidance and a powerful analytics platform for deep investigation of fraudulent traffic — giving Cortinadecor the tools to detect, prevent, and optimise.

1
Deep Online Traffic Analysis
Opticks performed a thorough analysis of Cortinadecor’s online traffic, identifying the primary sources of invalid traffic concentrated within Google Ads campaigns.
2
Automation for Efficient Management
Automated alerts detected spikes in invalid traffic in real time, enabling Cortinadecor’s IT team to take timely preventive action and maintain campaign integrity.
3
Beyond Detection: Better Traffic Quality
Going beyond fraud detection, Opticks helped Cortinadecor achieve greater efficiency across marketing campaigns — turning clean data into actionable insights for better performance.

““Opticks provided responsive guidance and support from the very start, along with a powerful analytics platform that allowed us to deeply investigate our fraudulent traffic sources.””
Yolanda Zornoza — PPC Manager, Cortinadecor

Want the same visibility for your campaigns?

Get Your Free Traffic Audit

The Results

Measurable Improvements Across the Board

14% Increase in ROAS Combined with internal optimisations

Invalid Traffic on Google Ads Reduced through targeted exclusions

Conversion Rate Driven by higher-quality traffic

Budget Reallocated TikTok redirected to Google Ads

By detecting and reducing invalid traffic on Google Ads, Cortinadecor achieved a 14% increase in ROAS — combined with internal optimisations and a strategic reallocation of TikTok budget to Google Ads, resulting in significant savings and more predictable performance in direct conversions.

Decreased invalid traffic on Google Ads through targeted exclusions and prevention.

Strategic budget reallocation — TikTok budget redirected to Google Ads for better performance.

Improved conversion rates through higher-quality traffic reaching the website.

Data-driven decisions — identified campaigns with high invalid traffic and elevated CPC.

What They Said

In Cortinadecor’s Own Words

“We’ve observed improvements in KPIs such as conversion rate and even ROAS. However, it’s important to clarify that these results cannot be attributed exclusively to Opticks, since other optimisations were implemented in parallel. That said, we do believe it contributed to the overall improvement.”
YZ
Yolanda Zornoza PPC Manager, Cortinadecor

Ongoing Impact

From Detection to Strategic Optimisation

Opticks didn’t just help Cortinadecor detect fraud — it became a strategic tool for smarter budget allocation and campaign optimisation, contributing to measurable improvements across the marketing funnel.

Strategic budget reallocation. TikTok budget redirected to Google Ads based on data-driven insights about traffic quality and performance.

Automated fraud prevention. Real-time alerts enabled the IT team to respond to invalid traffic spikes before they drained budget.

Higher conversion rates. By filtering invalid traffic, only genuine prospects reached the site — boosting conversions organically.

Campaign-level visibility. Identified specific campaigns with high invalid traffic rates and elevated CPC for targeted action.

14% ROAS improvement. Combined with Cortinadecor’s internal optimisations, traffic quality improvements contributed to a significant return boost.

Beyond Home & Decoration

These Patterns Exist in Every Paid Channel

Invalid traffic inflating CPAs, polluting optimisation algorithms, and draining budgets — these patterns are consistent across every industry running paid digital advertising. What will your traffic audit reveal?

E-Commerce Lead Generation SaaS Financial Services Travel & Hospitality Agencies

Audit Your Traffic for Free

Frequently Asked Questions

FAQs

What challenge did Cortinadecor face with their digital advertising?

Cortinadecor had a solid traffic base across Google Ads and TikTok, but needed to detect and prevent fraudulent traffic that was negatively impacting both traffic quality and the efficiency of their advertising investment. Their goals were to reduce wasted ad spend and ensure marketing efforts reached real users with a higher likelihood of conversion.

Why did Cortinadecor choose Opticks?

Opticks was chosen for its responsive guidance and support from the very beginning, and for providing a powerful analytics platform that allows deep investigation of fraudulent traffic with a high level of detail and depth.

What results did Cortinadecor achieve with Opticks?

Cortinadecor achieved a 14% increase in ROAS (combined with internal optimisations), decreased invalid traffic on Google Ads, improved conversion rates through higher-quality traffic, and strategically reallocated their TikTok budget to Google Ads for more predictable direct conversions. Opticks also helped identify specific campaigns with high invalid traffic and elevated CPC.

What is Opticks Security?

Opticks Security (optickssecurity.com) is an ad fraud prevention company headquartered in Barcelona, Spain. Founded in 2019, Opticks provides a SaaS platform that detects, blocks, and reports over 30 types of invalid traffic across all major advertising channels. It is trusted by more than 6,000 businesses worldwide and is rated 4.9 out of 5 on both Capterra and G2.

How does Opticks detect invalid traffic?

Opticks detects 30+ types of invalid traffic in real time using behavioural analysis, device fingerprinting, and pattern recognition. It identifies bot clicks, click farms, SDK spoofing, device emulators, and other forms of ad fraud across all digital advertising channels including Google Ads, Meta Ads, Microsoft Ads, TikTok Ads, and programmatic platforms.

Which ad platforms does Opticks work with?

Opticks works with all major ad platforms including Google Ads, Meta Ads (Facebook and Instagram), Microsoft Ads, TikTok Ads, programmatic platforms, and affiliate networks. It provides multi-channel coverage from a single dashboard.

Does Opticks offer a free trial?

Yes. Opticks offers a free trial with full access to all features. Contact the sales team to get started with a personalised onboarding and full-feature access during the trial period.

Can Opticks help e-commerce brands like Cortinadecor?

Yes. Opticks serves e-commerce brands, fintech companies, education providers, lead generation agencies, travel companies, and performance marketing teams. Cortinadecor is one example of an e-commerce brand that used Opticks to reduce invalid traffic, reallocate budget more effectively, and improve ROAS.

Get Started

Stop Paying for Traffic That Will Never Convert

Cortinadecor reduced invalid traffic, improved conversion rates, and achieved a 14% ROAS increase. See exactly how much of your ad spend is going to invalid traffic — and recover it.