Privacy Policy

Version 2026-10-20 · Effective from the day it is published

This policy explains how Headlark handles personal data when we are the controller: for account holders, people who contact us, and visitors to headlark.com. When we process personal data that appears on our customers' websites, we do so on the customer's behalf under the data processing agreement.

Who is responsible

The controller is Felwood Studios (Gustav Henning, enskild näringsverksamhet), Fleminggatan 63A, 112 32 Stockholm, Sweden, headlark.info@gmail.com. Felwood Studios is a sole proprietorship registered in Sweden and runs Headlark. See also company information.

What we collect, why, and on what legal basis

DataPurposeLegal basis (GDPR art. 6)
Email address, sign-in links, account and plan details, accepted terms versionCreating and running your accountContract (6.1.b)
Sites, domains, page addresses, usage countsProviding the service and enforcing plan limitsContract (6.1.b) (or legitimate interest, 6.1.f, where you act for your employer)
Billing details, VAT number, invoices (held by Stripe, which sells paid plans as merchant of record and is a separate controller for payment data)Charging for paid plans, bookkeepingContract (6.1.b), legal obligation (6.1.c)
Messages you send usAnswering youLegitimate interest (6.1.f)
Technical logs from our hosting provider (IP address, requested URL, time)Security and troubleshootingLegitimate interest (6.1.f)
Visits to headlark.com: page, referring site, campaign parameters, browser and screen type, country, and clicks on "Start free" and runs of the SEO checker, site checker, llms.txt generator and structured data checkerCounting visits to see which pages and channels workLegitimate interest (6.1.f)

The text of the pages you connect and the metadata we generate from it are processed on your behalf as processor under the DPA, not under this policy.

Visits to headlark.com are counted with GoatCounter, without cookies and without storing anything in your browser. Your IP address and browser details are used only in memory, for up to 8 hours, to avoid counting the same visit twice; they are never saved, so the counts can't be traced back to you. The dashboard at /app and the script customers add to their sites are not counted. We use no advertising trackers and we do not sell personal data. The script customers can add to their sites sets no cookies and sends us nothing about their visitors beyond the ordinary request for the metadata file, which our hosting provider (Vercel) serves from its CDN and may log like any static file.

Providers that process data for us

ProviderWhat forWhere
AnthropicThe AI model that writes metadata from page contentUnited States
VercelHosting and file storage for published metadataEU (Frankfurt, Stockholm); company in the US
UpstashDatabase for accounts, sites and usageEU (Frankfurt); company in the US
StripePayments, tax and invoices (merchant of record for paid plans)EU and United States
ResendSending sign-in and service emailsUnited States
GoatCounter (Martin Tournoij, Ireland)Cookieless visit counts for headlark.comEU (Hetzner, Finland and Germany)
Google (Gmail, Drive)Email correspondence and bookkeeping recordsEU/United States (DPF)

Where data is transferred outside the EU/EEA, the transfer relies on the EU–US Data Privacy Framework for providers certified under it, and otherwise on the European Commission's Standard Contractual Clauses. Anthropic does not use data sent through its commercial API to train its models.

How long we keep data

Your rights

You have the right to access your data, to get it in a portable format, and to have it corrected or erased. You can also restrict or object to certain processing. You can download your data and delete your account yourself in the dashboard, or email us. We answer within one month; in complex cases we may extend this by two months and tell you so within the first month. If you think we handle your data wrongly, you can complain to the Swedish Authority for Privacy Protection (Integritetsskyddsmyndigheten, IMY, imy.se).

Cookies

We use only cookies that are strictly necessary. See the cookie statement.

Changes

We update this policy when our processing changes, and tell account holders by email about material changes.