Mirage Analytics vs Google Analytics: A GDPR-Compliant Alternative
The debate is no longer “should you leave Google Analytics?” The debate has become “why haven’t you done it yet?”
Since February 2022, CNIL (French data protection authority) has issued formal notices to French companies for their use of Google Analytics. In 2025, three companies were sanctioned. In November 2025, CNIL announced an intensification of audits on Google Analytics usage in the first half of 2026.
The EU-US Data Privacy Framework adopted in July 2023 provides a legal basis, but it is contested and fragile. The specter of a “Schrems III” looms. And meanwhile, your data continues to transit through Google’s servers in the United States.
There is an alternative: a comprehensive, sovereign, compliant-by-design analytics solution. That is what DPLIANCE built with Mirage Analytics.
The Google Analytics Problem: A Recap of the Facts
The CNIL Timeline
August 2020: The association noyb (None of Your Business, founded by Max Schrems) files 101 complaints with European data protection authorities, including CNIL (French data protection authority), against websites using Google Analytics and Facebook Connect.
July 2020: The Court of Justice of the European Union invalidates the Privacy Shield (Schrems II ruling), the mechanism that governed EU-US data transfers.
February 2022: CNIL issues formal notices to several French website operators. The finding is unequivocal: using Google Analytics under standard conditions is not GDPR-compliant because personal data is transferred to the United States without sufficient safeguards. CNIL grants a one-month deadline for compliance.
July 2023: The European Commission adopts the EU-US Data Privacy Framework (DPF). Google LLC is among the certified companies. However, the EDPB highlights troubling similarities with previously invalidated frameworks.
2025: Three French companies sanctioned. CNIL announces an intensification of audits for the first half of 2026.
Sources: CNIL - Google Analytics formal notice, noyb - CNIL decision, GDPRhub - CNIL Google Analytics
The Fundamental Problem: Data Goes to Google
Even with GA4, even with Consent Mode v2 (mandatory since March 2024), one reality remains: your data transits through Google’s servers in the United States. Consent Mode v2 introduces granular parameters (ad_user_data, ad_personalization), but does not change the destination. Even in “denied” mode, Google collects anonymized “pings” on its infrastructure.
NGOs are actively preparing a “Schrems III” that could invalidate the Data Privacy Framework — just as Schrems I invalidated Safe Harbor (2015) and Schrems II invalidated the Privacy Shield (2020).
Source: Piwik PRO - Is GA4 GDPR compliant?, Usercentrics - GA4 and GDPR
Detailed Comparison Table
| Criterion | Mirage Analytics | Google Analytics (GA4) |
|---|---|---|
| Personal data | Zero third-party cookies, zero persistent trackers | First-party cookies + Google identifiers |
| Data storage | France (Scaleway) | USA (Google Cloud) |
| Consent required | No (CNIL exempt) | Yes (cookie banner mandatory) |
| Session replay | Native (rrweb) | No |
| Heatmaps | Click + scroll included | No |
| JS error monitoring | Included | No |
| Conversion tracking | Multi-type (Purchase, Initiate, Prospect) + price CSS | Enhanced Ecommerce, GA4 events |
| Funnels | No | Yes (Explorations) |
| Attribution | Direct only | Multi-touch (data-driven) |
| Custom dimensions | No | Yes (event + user properties) |
| UTM parsing | No (in development) | Yes (native) |
| Audiences / Segments | No | Yes (advanced) |
| Ad integration | No | Google Ads, Display, DV360 |
| Real-time | Yes | Yes |
| API | In development | Full API (Data, Admin, Reporting) |
| Price | From 19 EUR excl. tax/month | Free (GA4 standard) / GA360 paid |
| Data owner | You | |
| Open source | No (proprietary SaaS) | No |
| GDPR compliance | By design | Depends on configuration + DPF |
Why “Free” Is Not Free
Google Analytics is free. That is its most powerful and most misleading argument.
You Pay with Your Users’ Data
Google Analytics is not an act of generosity — it is a collection tool that feeds the Google advertising ecosystem. Every tracked visit enriches Google’s understanding of your users. With Consent Mode v2, even when a user refuses tracking, Google collects anonymized “pings” that feed its models. The user said no, but the machine keeps enriching itself.
You Pay with the Consent Banner
Google Analytics requires explicit user consent (first-party cookie, identifiers, transfer outside the EU). This means:
- A consent banner on every page
- A refusal rate reaching 30 to 50% depending on the sector in France
- Incomplete data: you only measure traffic from visitors who accept
- A degraded user experience from intrusive banners
With Mirage Analytics, no third-party cookies, no persistent trackers, no banner required. You measure 100% of your traffic in full legality.
You Pay with Your Sovereignty
Your traffic data is on Google’s servers. You do not control it. Google can change its terms of use, its data format (farewell Universal Analytics in July 2024), or its retention policy at any time. You are a tenant, not an owner.
What Mirage Analytics Offers (That GA4 Does Not)
Native Session Replay
GA4 does not offer session replay. To see how your users actually navigate your site, you need to add a third-party tool (Hotjar, FullStory, Contentsquare) — with an additional script, an additional budget, and additional data potentially leaving the EU.
Mirage Analytics integrates session replay natively via rrweb. Every session can be replayed directly in the dashboard, without third-party tools.
Click and Scroll Heatmaps
Same story: GA4 does not offer heatmaps. Mirage Analytics integrates them natively. Visualize where your users click, how far they scroll, and identify dead zones on your pages.
JavaScript Error Monitoring
A JavaScript error can block an order form, an add-to-cart button, or a signup process. GA4 does not detect these errors. Mirage Analytics does, in the same dashboard as your traffic and behavior data.
This feature alone often justifies the migration: how many conversions are you losing due to JS errors you do not detect?
Advanced Conversion Tracking
Mirage Analytics offers multi-type conversion tracking — Purchase, Initiate, Prospect — with the ability to track prices dynamically via a CSS selector. It is less rich than GA4’s Enhanced Ecommerce, but it is integrated, sovereign, and cookie-free.
Where Google Analytics Retains the Advantage
Let us be honest about GA4’s strengths:
- Funnels and explorations: path analysis, cohort analysis, which Mirage Analytics does not yet have
- Multi-touch data-driven attribution powered by machine learning
- Google ecosystem: native integration with Google Ads, Search Console, BigQuery, Looker Studio
- Custom dimensions and predictive audiences of incomparable richness
- Native UTM parsing, complete
- Free for GA4 standard
But each of these advantages has a price: your data at Google, mandatory consent, and fragile legal compliance.
The Risk/Benefit Calculation in 2026
CNIL (French data protection authority) is intensifying audits in the first half of 2026. GDPR penalties reach 20 million euros or 4% of global turnover (Article 83 of the GDPR). The Data Privacy Framework provides coverage, but it is temporary and contested — a “Schrems III” would plunge GA4 users back into legal uncertainty.
Migrating has a real cost: technical integration (a few hours), loss of GA4 history, team adaptation. But the status quo costs much more: legal risk, 30 to 50% invisible traffic (consent), and 2-3 third-party tools for replay and heatmaps.
Sovereign Hosting: France vs USA
Google Analytics: your data is processed and stored on Google Cloud, primarily in the United States. Google offers regionalization options in the EU for GA360 (paid enterprise version), but processing remains subject to American laws (FISA, Cloud Act, Executive Order 14086).
Mirage Analytics: your data is hosted on Scaleway, a 100% French cloud infrastructure. Scaleway is ISO 27001 and HDS (Health Data Hosting) certified, and is undergoing SecNumCloud qualification from ANSSI — the highest cloud security certification issued in France. Data never leaves French territory and is never subject to extraterritorial legislation.
Source: Scaleway - SecNumCloud Process
Migrate in 4 Steps
- Assess your GA4 dependency: what reports do you actually consult each week? Do you use Google Ads or BigQuery integrations? If you primarily use GA4 for traffic and conversions, Mirage Analytics covers these needs.
- Install Mirage in parallel for 2 to 4 weeks. Compare data, verify traffic and conversion capture.
- Remove the GA4 script. Remove the associated consent banner. Observe the impact: less friction, more data.
- Leverage replay and heatmaps: watch sessions that did not convert, analyze click zones, detect JS errors. Tools GA4 never offered you.
Discover Mirage Analytics and begin your migration to sovereign, compliant analytics.
FAQ
Is Google Analytics illegal in France in 2026?
No, not as such. The EU-US Data Privacy Framework (adopted July 2023) provides a legal basis for data transfers to the United States. However, CNIL (French data protection authority) maintains reservations about the standard GA4 configuration and has announced an intensification of audits in the first half of 2026. Compliance depends on your precise configuration, and the legal framework could be invalidated by a future CJEU ruling (“Schrems III”).
Is a consent banner needed with Mirage Analytics?
No. Mirage Analytics drops no third-party cookies and uses no persistent trackers. Geolocation is done by IP address, but the IP is never stored. These characteristics allow benefiting from the consent exemption for audience measurement according to CNIL (French data protection authority) recommendations.
What happens to my Google Analytics historical data?
GA4 data is not transferable to Mirage Analytics. Note that GA4 retains only 14 months of data by default (extendable to 26 months via retention settings). If you need to preserve a history, export your GA4 reports before migrating.
Can Mirage Analytics replace Google Analytics for e-commerce tracking?
For basic conversion tracking (purchases, initiations, prospects) with price tracking, yes. For complete Enhanced Ecommerce (abandoned carts, product lists, promotions, checkout steps), GA4 remains richer. Evaluate your real needs: the majority of e-commerce sites only use a fraction of GA4’s Enhanced Ecommerce features.
Does the Data Privacy Framework really protect my use of GA4?
The DPF provides a current legal basis for EU-US transfers. But the EDPB has highlighted similarities with previously invalidated frameworks (Safe Harbor in 2015, Privacy Shield in 2020). Organizations like noyb are preparing a legal challenge. The risk of invalidation exists, which would plunge GA4 users back into legal uncertainty. Migrating to a sovereign tool like Mirage Analytics permanently eliminates this risk.
This article was updated on March 24, 2026. Legal information is based on official publications from CNIL, noyb, and the EDPB. Product information comes from official Google Analytics documentation and Mirage Analytics product data.