About me
Anonymity and security are the cornerstones of a free internet. I build tools that defend these rights.
My Philosophy
The internet was built to connect people. Not to spy on them. Not to manipulate them. Not to control them.
Every person has the right to anonymity. Not because they have something to hide, but because privacy belongs to human dignity. Those who are constantly watched behave differently. Those who are constantly surveilled think differently. A free society needs free, unobserved spaces.
Every person has the right to communicate. Freely, uncensored, without fear. To share opinions, ask questions, hear other perspectives. The internet has created this possibility like no medium before. And like no medium before, it is under attack.
Every person has the right to security. From scammers. From phishing. From data theft. From stalking. From everything that turns the internet into a minefield. Security should not be expensive, not complicated, not a premium feature. Security should be the default.
My tools pursue a single goal: to defend these three rights in everyday life. A phishing link is blocked before it reaches you. A file is converted without being uploaded to a server. A document is stripped of metadata before you share it. Small things that add up to make a difference.
My Story
It all started in late 2025 with a series of small online tools. Converters, calculators, reference tools. Simple tools I needed myself in everyday life, and which were not available in good quality for free.
The more I built, the clearer the common direction became: tools I would use myself, with respect for user privacy as a basic rule. In early 2026 the first SaaS projects came along. FixCosts, because I had lost track of my own subscriptions. CompanysControll for freelancers. ClicksLeft for time-limited links.
With LinkSentry came the first tool with a clear protection mission. Over 157,000 scam sites blocked, more than 70 IP logger services detected, 14 protection layers active. Free. Local in the browser. Without your data ever landing anywhere.
Today my portfolio includes 30 projects. What they all have in common: they solve a concrete problem, they respect privacy, and they treat you as a human being, not a product.
I am currently developing two new projects that will go live soon. TrackMyCashflow is a privacy first personal finance platform for people with many income sources and diversified portfolios. Pervigilo is a monitoring platform for solo developers and small teams, inspired by Edward Snowden's Heartbeat system. Both follow the same principles: local where possible, established infrastructure providers where necessary, honest communication about the architecture.
My Principles
Local First
If a tool can work in the browser, it should. No server. No database. No upload. What stays on your device cannot be taken from you.
No Coercion
No forced signup. No credit card for trials. No dark patterns. If a tool is useful, people will use it voluntarily.
Transparency
No hidden features. No trackers that only surface in the source code. What's in my tools is openly documented.
Accessibility
Tools should work for everyone. In German and English. On desktop and mobile. With mouse, keyboard and screen reader. Accessibility is not an afterthought.
Honesty
If a tool cannot do something, I say so. If a feature is planned but not ready, it says Coming Soon. No marketing promises that don't hold up later. Same for privacy: if a tool needs a database, it says so clearly. No greenwashing, no sugarcoating.
Honesty About Limits
I want to be honest: There is no one hundred percent protection on the internet. No system is absolutely secure. No software is flawless. Anyone who promises the opposite is lying.
What I can promise: I minimize risk wherever possible. For most of my tools, that means no servers, no databases, no data collection. What is not on a server cannot be hacked or leaked.
For some projects, this is not possible. FixCosts, CompanysControll, LicenseGate, ClipToss and the two planned SaaS projects need a database to function. These databases live with professional providers like Supabase and are delivered through Vercel. The data is encrypted and technically separated.
But: in the cloud era, no one can guarantee that servers are exclusively in a specific country. Vercel is a global CDN, Supabase offers various regions. I choose European regions where possible, but that is not an unshakeable promise.
What I can promise: I only collect data I need for the functionality. I do not sell data. I do not look into user data without reason. But as operator I have technical access to the infrastructure, that is reality for any SaaS product. For anyone who cannot accept this, my local tools are the better choice (BrowserCut, MetaDataGone, OfficeToAI, Piktokoli, Summatio and more, all without a server).
On every project page you will find a dedicated privacy section that describes how the specific tool handles data. No marketing text, but an honest assessment. What runs locally is marked as local. What runs on servers is marked as server based.
This is my approach: data security and minimal server architecture as the ideal, but honest communication when a project cannot reach this ideal one hundred percent.
Why free?
A large part of my tools is permanently free to use. There is a reason for this: security and privacy are not luxury goods. Those who can only afford expensive tools are not more protected than someone who does not have them. That's why the protection features of LinkSentry, the converters of BrowserCut and OfficeToAI, the decision tools of Piktokoli and most other tools are free.
Those who need more features or want to support the work can buy a Pro version or support me on Ko-fi. The base stays free.
Tech Stack
Next.js, TypeScript, Tailwind CSS for most web apps. Supabase when a backend is needed. Stripe and LemonSqueezy for payments. Vercel for hosting.
For browser extensions Manifest V3 with TypeScript. For 3D graphics Three.js and Manifold WASM. For video processing WebCodecs and FFmpeg.wasm. For document processing mammoth.js, SheetJS and pdf.js.
Development happens with Claude Code in VS Code. Every project goes through quality control: TypeScript Strict Mode, ESLint, automated tests, plus manual audits for GDPR, WCAG AA accessibility and security.