Frontend developer portfolio

Hello, I'm Kai.

A passionate frontend developer with a keen eye for design and a love for creating beautiful, functional web experiences.

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Technology background
Selected work

My Projects

Current projects, product experiments, and useful web tools.

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TempMail project
TempMail.Best

Best Temporary Email.

Web app
DNS project
DNS.Surf

DNS resolution results in different regions worldwide.

Developer tool
HTML zone project
HTML.ZONE

A compact web toolbox for everyday builders.

Product
Developer workspace
About

Design-minded development for modern portfolios.

Clean project pages, thoughtful writing, and fast navigation come together in a simple multi-page portfolio experience.

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Writing

My Writing

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Apr 25, 2025

Run MCP Server in a Docker sandbox
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April 19, 2025

Use Cloudflare Workers to concat audio files
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Dec 31, 2024

RSS.Beauty - Make Your RSS Beautiful