Legal Notice, Terms & License

1. Legal Notice

Required under § 5 German Telemedia Act (TMG)

Responsible for content:

Raimo Geisel Uhlandstraße 15 75385 Bad Teinach-Zavelstein Germany

Note: This website is a non-commercial documentation project. No goods or services are sold or offered.

EU Online Dispute Resolution

The European Commission provides an online dispute resolution (ODR) platform: https://ec.europa.eu/consumers/odr

We are neither obligated nor willing to participate in dispute resolution proceedings before a consumer arbitration board, as this website does not offer goods or services to consumers.

2. Privacy Policy

Data Controller (Art. 4 No. 7 GDPR): Raimo Geisel, Uhlandstraße 15, 75385 Bad Teinach-Zavelstein, Germany — see Section 1 for contact details. No Data Protection Officer is required for this non-commercial personal site.

2.1 Hosting

This website is hosted via GitHub Pages (GitHub, Inc., 88 Colin P. Kelly Jr. Street, San Francisco, CA 94107, USA). When you visit this site, GitHub may collect your IP address and other technical data as part of standard server logging. See GitHub’s Privacy Statement for details.

2.2 Data We Collect

This site itself does not use cookies, tracking pixels, analytics scripts, or any third-party advertising. The following data is stored exclusively in your browser’s localStorage. None of it is ever transmitted to our servers or any third party:

Key	Purpose	Duration
`ooxml-theme`	Saves your chosen colour theme (`light`, `dark`, or `auto`)	Until you clear browser storage
`ooxml-privacy-ts`	Records when you last acknowledged this privacy notice so the banner can be re-displayed after one year	Refreshed each time you click “Got it”; re-shown after 365 days

You can remove both keys at any time via your browser’s developer tools or by clearing site data for this domain.

2.3 Contact Form (Formspree)

When you submit the contact form on this website, your data is processed by Formspree, Inc. (340 S. Lemon Ave #1854, Walnut, CA 91789, USA), which acts as our data processor pursuant to Art. 28 GDPR. The following data is transmitted to Formspree’s servers:

Name and e-mail address as entered in the form
Your message subject and message text
IP address and browser metadata collected automatically by Formspree

Legal basis: Art. 6(1)(b) GDPR (processing necessary to handle your voluntary enquiry) and/or Art. 6(1)(f) GDPR (our legitimate interest in responding to communications). You are under no obligation to use the contact form; you may contact us directly by e-mail instead.

Transfer to the USA: Formspree is based in the United States. Data is transferred on the basis of Standard Contractual Clauses (Art. 46(2)(c) GDPR). See Formspree’s Privacy Policy for full details, including their retention periods.

Our retention: We keep your message only as long as necessary to handle your enquiry.

2.4 External Resources

All fonts (Inter, JetBrains Mono) and the syntax highlighting library (highlight.js) are self-hosted on this website. No requests are made to Google, Cloudflare, or any other third-party CDN when you visit this site.

Under the General Data Protection Regulation (GDPR) you have the following rights regarding any personal data we process:

Right of access (Art. 15 GDPR) — obtain confirmation of whether and which personal data we process
Right to rectification (Art. 16 GDPR) — request correction of inaccurate data
Right to erasure (Art. 17 GDPR) — request deletion of your data (“right to be forgotten”)
Right to restriction (Art. 18 GDPR) — request restriction of processing
Right to data portability (Art. 20 GDPR) — receive your data in a structured, machine-readable format
Right to object (Art. 21 GDPR) — object at any time to processing based on legitimate interest (Art. 6(1)(f) GDPR), including profiling. We will then cease processing unless we can demonstrate compelling legitimate grounds
Right to lodge a complaint (Art. 77 GDPR) — you have the right to lodge a complaint with a data protection supervisory authority. The competent authority for our location is:

Landesbeauftragte für den Datenschutz und die Informationsfreiheit Baden-Württemberg (LfDI BW)
Lautenschlagerstraße 20, 70173 Stuttgart, Germany
https://www.baden-wuerttemberg.datenschutz.de

Since this site does not itself collect personal data beyond what GitHub Pages logs (governed by GitHub’s policy) and what is transmitted to CDN providers (governed by their respective policies), please direct access or erasure requests to those providers directly. For any privacy concerns, you may also contact us at the address in Section 1.

3. Terms of Use

3.1 Acceptance

By accessing this website you agree to these terms. If you do not agree, please do not use this site.

3.2 Purpose

This website provides free, open documentation about the Office Open XML (OOXML / ECMA-376 / ISO 29500) file format specifications. It is intended solely for informational and educational purposes.

3.3 Accuracy

The documentation is provided on a best-effort basis. While we strive for accuracy and completeness, we make no warranty — express or implied — that the content is correct, up to date, or fit for any particular purpose. Always consult the official ECMA-376 / ISO 29500 specifications for authoritative information.

3.4 Acceptable Use

You may use this website for personal, educational, and commercial research purposes. You may not:

Scrape or mirror the site in a way that disrupts service
Reproduce substantial portions of the content without attribution
Use the site in any way that violates applicable law

3.5 External Links

This site may contain links to third-party websites. We have no control over their content and accept no liability for them.

3.6 Changes

We reserve the right to modify or remove content at any time without notice.

4. License

4.1 Documentation Content

All original documentation text, examples, and diagrams on this site are published under the Creative Commons Attribution 4.0 International License (CC BY 4.0).

You are free to:

Share — copy and redistribute the material in any medium or format
Adapt — remix, transform, and build upon the material for any purpose, even commercially

Under the following terms:

Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made.

Full license text: https://creativecommons.org/licenses/by/4.0/

4.2 OOXML Specification

The Office Open XML file format is standardized as ECMA-376 and ISO/IEC 29500. The specification itself is the intellectual property of Ecma International and ISO. This site documents the standard but does not reproduce the specification text verbatim.

4.3 Source Code

The source code of this website (HTML, CSS, JavaScript, Jekyll configuration) is proprietary and all rights reserved. The source code is not publicly available, not open source, and may not be copied, modified, distributed, or reused in any form without explicit written permission from the copyright holder.

5. Disclaimer of Liability

5.1 Content

Despite careful review, we accept no liability for the accuracy, completeness, or timeliness of the content. As a service provider we are responsible for our own content under general law (§ 7 para. 1 TMG). However, under §§ 8–10 TMG we are not obligated to monitor transmitted or stored third-party information.

5.2 Links

Our site contains links to external websites over which we have no control. We therefore cannot accept any liability for this external content. The respective provider or operator of the linked pages is always responsible for their content.

5.3 Copyright

The content and works on this website are subject to German copyright law. Any use beyond the narrow limits of copyright law without our consent is prohibited. Insofar as content on this site was not created by us, third-party copyrights are observed and marked accordingly.

Last updated: May 2026