Privacy Policy

1. Privacy at a Glance

General Information

The following information provides a simple overview of what happens to your personal data when you visit this website. Personal data is any data that can be used to identify you personally.

Data Collection on This Website

Who is responsible for data collection on this website?

Data processing on this website is carried out by the website operator. You can find their contact details in the legal notice of this website.

How do we collect your data?

Some data is collected when you provide it to us. This could, for example, be data you enter in a contact form.

Other data is collected automatically or with your consent when you visit the website by our IT systems. This is primarily technical data (e.g., internet browser, operating system, or time of page access).

What do we use your data for?

Some of the data is collected to ensure the proper functioning of the website. Other data may be used to analyze your user behavior.

2. Hosting

We host the content of our website with the following provider:

Vercel

This website is hosted by Vercel. The provider is Vercel Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, USA.

When you visit our website, Vercel collects various log files including your IP addresses. For details, please refer to Vercel's privacy policy: https://vercel.com/legal/privacy-policy.

The use of Vercel is based on Art. 6 para. 1 lit. f GDPR. We have a legitimate interest in ensuring the most reliable presentation of our website.

3. General Information and Mandatory Information

Data Protection

The operators of this website take the protection of your personal data very seriously. We treat your personal data confidentially and in accordance with statutory data protection regulations and this privacy policy.

Note on the Responsible Party

The responsible party for data processing on this website is:

Jerome Sommerfeldt
Germany
Email: hello@jeromesommerfeldt.de

Storage Duration

Unless a more specific storage period has been specified in this privacy policy, your personal data will remain with us until the purpose for data processing no longer applies.

Your Rights

You have the right at any time to receive information free of charge about the origin, recipient, and purpose of your stored personal data. You also have the right to request the correction or deletion of this data.

4. Data Collection on This Website

Cookies

Our website uses so-called "cookies". Cookies are small text files and do not cause any damage to your device. They are stored either temporarily for the duration of a session (session cookies) or permanently (permanent cookies) on your device.

Server Log Files

The page provider automatically collects and stores information in so-called server log files, which your browser automatically transmits to us. These are:

• Browser type and browser version
• Operating system used
• Referrer URL
• Hostname of the accessing computer
• Time of the server request
• IP address

Vercel Analytics

This website uses Vercel Analytics, a web analytics service provided by Vercel Inc. Vercel Analytics collects anonymized usage data such as page views and click paths to improve the user experience. No personal data is collected and no cookies are set. The data is processed exclusively in aggregated form.

The use of Vercel Analytics is based on Art. 6 para. 1 lit. f GDPR. We have a legitimate interest in analyzing user behavior in order to optimize our web offering.

For more information, please refer to Vercel's privacy policy: https://vercel.com/legal/privacy-policy.

Local Data Processing

This website processes GPX and FIT files entirely in your browser. None of your fitness data is transmitted to or stored on our servers. All conversions and analyses are performed locally on your device.

5. Contact

If you have any questions about data protection, please contact:

Jerome Sommerfeldt
Email: hello@jeromesommerfeldt.de

Last updated: 10/5/2025