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Analytics

Seline

Analytics

Seline is an EU hosted cookieless web analytics platform built in Estonia that delivers privacy first metrics without persistent identifiers, generally not requiring user consent under Article 5(3) ePrivacy.

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Overview

What does Seline do?

What is Seline

Seline is a privacy first web analytics platform built and hosted in the European Union by an Estonian team. It positions itself as a Google Analytics alternative for European publishers and SaaS founders who want simple, ePrivacy friendly metrics. Seline tracks page views, custom events, conversions and source attribution without persistent identifiers in the default mode. The script is lightweight, the data stays in Frankfurt on Hetzner infrastructure, and the dashboard exposes only aggregated counts.

What data and identifiers does Seline use

In its default cookieless configuration Seline does not write any cookie or localStorage entry. Instead, the server computes a daily rotating hash from the visitor IP, the user agent and the website domain to estimate unique visitors for the day; this hash is not stored beyond 24 hours. The platform receives the URL of each page view, the referrer, the country derived from the IP, the device class and any custom event payload defined by the publisher. No advertising IDs and no cross site identifiers are processed.

GDPR and ePrivacy implications

Because the default Seline configuration does not write or read any identifier on the user terminal, Article 5(3) of the ePrivacy Directive does not apply, in line with EDPB and CNIL guidance for first party, aggregated audience measurement. Processing can therefore be operated under Article 6(1)(f) GDPR (legitimate interest) without prior consent. If you switch to extended retention, identifiable session replays or third party integrations, the analysis must be redone and consent will likely be required.

Data hosting and transfers

Seline hosts all customer data in Germany on Hetzner servers. The vendor is registered in Estonia, an EEA Member State, so there is no third country transfer for the operational service. Sub processors are documented in the DPA and limited to EU based providers. This is a notable advantage compared to most US analytics tools that still require Standard Contractual Clauses and a transfer impact assessment.

Practical compliance steps

Document a legitimate interest assessment that records the cookieless design, the daily rotating hash and the EU hosting. Add Seline to your record of processing activities under web analytics. Inform users in your privacy notice that you use a cookieless analytics tool and that no personal data leaves the EU. If you later activate optional cookies, identifiable user IDs or extended retention, switch the legal basis to consent and bring Seline behind your CMP.

Compliance

Seline and the GDPR

Legal basis
Article 6(1)(f) GDPR (legitimate interest) for the cookieless mode that aggregates anonymous metrics. Switch to consent (Article 6(1)(a)) when extended retention or identifiable analytics are enabled.
Risk level
low
Applicable regulations
GDPR, ePrivacy Directive (Article 5(3)), CNIL France, BfDI Germany, AEPD Spain, ICO UK PECR

Impact assessment (DPIA)

Low risk by design. A formal DPIA is not mandatory in the default cookieless mode. Document the legitimate interest assessment, retention periods and data minimisation choices.

Sample text for your banner

We use Seline (cookieless web analytics, Estonian vendor with EU hosting) which counts visits without persistent identifiers and does not track you across sites. No personal data leaves the European Union.
Cookies and trackers

What Seline sets and contacts

Tracking method
JavaScript tag, cookieless analytics by default, optional first party identifiers for repeat visitor counting
Server location
European Union (Frankfurt by default, hosted on Hetzner European infrastructure)
Cookieless mode available
Yes

Cookies set (1)

NameTypeDurationPurpose
No cookiesnonen/aSeline is a cookieless privacy first analytics platform. It identifies sessions through a hash of user agent, IP and a daily salt, and does not write cookies or localStorage entries on the visitor browser. No client side identifiers are persisted.

Third-party domains contacted (3)

  • seline.so
  • cdn.seline.so
  • api.seline.so
Questions

Frequently asked questions about Seline

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Does Seline set cookies?

No, in its default configuration Seline does not write any cookie or localStorage entry. Unique visitors are estimated server side using a daily rotating hash that is not retained beyond 24 hours.

Is consent required to use Seline in the EU?

In the default cookieless mode, no. Because no identifier is stored or read on the user terminal, Article 5(3) of the ePrivacy Directive does not apply, in line with EDPB and CNIL guidance for aggregated first party measurement. If you activate optional persistent identifiers, prior consent becomes mandatory.

What is the legal basis for processing through Seline?

Article 6(1)(f) GDPR (legitimate interest) is appropriate for the cookieless mode that aggregates anonymous metrics. Document a legitimate interest assessment that explains the design choices, the daily rotating hash and the EU hosting.

Does Seline transfer data outside the EU?

No. Seline hosts data exclusively in Germany on Hetzner Frankfurt and the company is registered in Estonia. Sub processors are limited to EU based providers. There is no third country transfer for the operational service.

Do I need a DPIA for Seline?

A formal DPIA is not mandatory in the default cookieless mode because the residual risk is low. Document a legitimate interest assessment, retention rules and the cookieless design instead. If you activate optional identifiable features, the DPIA decision should be reassessed.

How do I implement Seline in a GDPR compliant way?

Install the Seline script, keep the cookieless mode enabled, document the legitimate interest assessment and add Seline to your record of processing activities. Mention the cookieless analytics tool in your privacy notice and verify that EU hosting is enforced in your account settings.

Are there alternatives to Seline?

Comparable privacy first analytics tools with EU hosting include Plausible Analytics (Estonia), Fathom (Canada with EU option), Simple Analytics (Netherlands), Pirsch (Germany), Matomo Cloud EU and Piwik PRO. Selection depends on event modelling, conversion goals and budget.

How should I update my cookie policy for Seline?

Mention that you use Seline (cookieless analytics, EU hosting) for aggregated audience measurement, that no persistent identifier is stored and that no personal data leaves the EU. List Seline as a processor in your privacy notice and explain the data minimisation choices.

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