This article introduces top three tools for converting markdown files to HTML files. They are useful for creating documents and instruction manuals.

This article introduces the basic usage of Docusaurus, a static site generator that generates sites from markdown files. Docusaurus is a useful tool for creating manual sites with a lot of information.

The website of the sculptor Aya Sasakura, created by ZATTA PRODUCTION, Kota Shimizu's media production and marketing agency, won the Appleple Awards at the a-blog cms awards 2021.

I found a new referrer spam recently, so I did a referrer exclusion in both Google Analytics Universal Analytics and GA4. It seems that referrer exclusion was not possible in GA4 before, but now it can be done easily.

Best practices for implementing looping and auto-playing videos using video tags, as well as recommended values for video file size and encoding. You can also see the real examples through this article.

How to add properties for GA4 and use them together with Universal Analytics property. It's easy, but one thing to keep in mind when setting up with Google Tag Manager (GTM).

Simple Gantt is a free Excel book that allows you to easily create simple Gantt charts. It can be used for project management, shift charting, etc.

I am pleased to announce that the website of sculptor Aya Sasakura, which was created by Zatta Production (Founded by Kota Shimizu), has been selected as an Honorable Mention and The Mobile Excellence Award in the international website design and development competition "Awwwards".

This article explains how to debug a web page opened in Safari on iOS (iPhone) from Chrome on Windows PC.

Visualization of open data on novel coronaviruses in Fukushima Prefecture (data visualization).