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).

This is a step-by-step guide to using NVM for Windows to change multiple Node.js versions depending on the project. It also includes how to deal with errors.

This is for those who use TortoiseGit as their Git client software and Bitbucket for hosting their repositories. This article summarizes the steps to generate an SSH key to enable two-step verification on Bitbucket and configure it on TortoiseGit and Bitbucket.

I had a chance to look up the "appropriate font size for body text" again, so I put it together. The conclusion was that 12px to 18px is the standard for both Japanese and English. It is also important to adjust the font size according to the demographics of the visitors to your site.