Portfolio

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CMS systems, WordPress plugins, Firefox extensions, JS libraries, and in-browser tools. Filter by type, or search directly.

9 active · 6 categories · 1 archived

Active: 9
Categories: 6
Archived: 1

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What I am most proud of right now

PHP & CMS Active

Custom CMS

The codebase behind this site: versioned migrations, role-based admin, Danish/English/German UI, theme-driven pages, a unified media library, and security tooling - built so each layer can grow without a framework treadmill.

PHPSQLTypeScriptCSS

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Desktop apps Active

Minside Admin desktop app

Electron Windows client for the SaaS portal: locked shell, persistent login, 2FA, and live Analytics.

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Browser extensions Active

Privacy Monitor

Observe-only Firefox extension on addons.mozilla.org: records cookies, third-party requests, storage, and fingerprinting - and explains what happened.

Read the case → Firefox Add-ons ↗

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More projects

6 projects

WordPress Maintained

WordPress Task Manager plugin

Tasks, metaboxes, and defaults in wp-admin - without scattered spreadsheets.

PHPWordPress

Read about the plugin →

WordPress Maintained

WordPress custom admin dashboard

Custom menus, dashboards, and workflows shaped for real wp-admin work.

PHPWordPress

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Sandbox tools Active

Sandbox tools

Browser-based experiments and demos on this site - small utilities you can run without leaving the portfolio.

JavaScriptBrowser APIs

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JS libraries Active

Toast notification layer

Vanilla JS notifications with positions, a timer bar, pause on hover, and optional links. GPL-3 and easy to drop into a page.

Vanilla JSGPL-3

Read about the library → GitHub ↗Demo ↗

Sandbox tools Active

EXIF extractor

Client-side metadata extraction with structured output for debugging media files and upload flows.

JavaScriptEXIF.jsLeaflet

Run it →

Desktop apps Active

Local Music Player

Music player for Windows in C#/.NET 10. Plays music from your PC and from FTP/FTPS servers, with a 10-band equalizer and media keys.

C#.NET 10WPFNAudio

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Sandbox

Small tools that run right in the browser

Experiments and utilities with no login or install. Try them without leaving the portfolio.

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Archive

Older experiments and tools that are no longer updated. Case studies and screenshots remain for reference; live demos may be stale or offline.

PDF Builder / EditorSandbox tools · Case preserved Sandbox tools Case preserved Read the case study →

1. About this website

This website is owned and operated by Simon Ringwelski and serves as a personal portfolio, a showcase of projects, and a demonstration of custom-built software and tools. By accessing or using this website, you agree to these Terms of Service. If you do not agree, you should not use the website.

2. Acceptable use

You may use this website only for lawful purposes, including learning about my projects, contacting me, and using the features provided. I reserve the right to restrict or block access where misuse is suspected. You must not:

Attempt to gain unauthorized access to the website, its servers, databases, or related systems
Attempt to bypass or test security measures without prior written permission
Perform actions that overload, disrupt, or damage the website or its infrastructure
Use automated tools for large-scale scraping, data harvesting, or similar activities that negatively affect the operation of the website
Submit unlawful, abusive, harmful, misleading, or offensive content through forms, uploads, or other features
Distribute malware or malicious code, or otherwise use the website for unlawful purposes

3. Intellectual property

Unless otherwise stated, the text, graphics, design, layout, images, and original source code on this website are owned by Simon Ringwelski. You may quote content in reasonable amounts provided that clear attribution is given. Copying, redistributing, or using content for commercial purposes requires prior written permission. Third-party libraries, open-source components, and other materials remain subject to their respective licences.

4. Demos and tools

This website may contain demos, sandboxes, or other interactive tools. These are provided for demonstration, testing, or learning purposes only and must not be used for unlawful purposes or in a way that negatively affects the operation or security of the website. Features may be changed, restricted, or removed without notice.

5. Third-party links

This website may contain links to external websites or services. These are operated by third parties and are subject to their own terms and privacy policies. I have no control over their content, security, or availability and accept no responsibility for them.

6. Disclaimer

This website and all content are provided "as is" and "as available". No guarantee is given that the website will always be available, error-free, or that its content is complete or up to date. Any use of code samples, guides, or technical tools is at your own risk.

7. Limitation of liability

To the fullest extent permitted under Danish law, Simon Ringwelski shall not be liable for indirect losses, business interruption, loss of profits, loss of data, or consequential damages arising from the use of or inability to access the website. This limitation does not apply where liability cannot legally be excluded.

8. Professional services

Nothing on this website constitutes a binding offer to provide services. Any agreement regarding development work, consulting, or other professional services is only formed once both parties have agreed in writing on the scope, pricing, delivery, and other relevant terms.

9. Changes

I reserve the right to update these Terms of Service at any time. If material changes are made, the "Last updated" date will be revised. Your continued use of the website after changes have been published constitutes acceptance of the updated terms where permitted by applicable law.

10. Governing law

These Terms of Service are governed by the laws of Denmark. Any disputes shall be brought before the Danish courts unless mandatory law provides otherwise.

11. Contact

If you have any questions about these Terms of Service, you can contact me using the contact information provided for this website or through the contact section.

Simon Ringwelski
7600 Struer
Email: info@simonringwelski.dk

Last updated: July 2026

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