Knowledge Base (English edition)

Introduces PC / animals / plants, etc., focusing on WordPress customization methods and plugin reviews.

Causes and solutions for posting titles becoming vertically long in the posting list on the management screen

Causes and solutions for posting titles becoming vertically long in the posting list on the management screen

  • Published：
  • WordPress

When you open a past post in WordPress, isn’t it difficult to see the title column because it has many lines or is vertically long one character at a time? This is not a bug and can be fixed with a simple fix, so let’s adjust it ourselves.
How to make sure that the default value and the conditional branch judgment are the same in the checkbox of the theme customizer.

How to make sure that the default value and the conditional branch judgment are the same in the checkbox of the theme customizer.

  • Published：
  • WordPress

If you add a checked checkbox to the theme customizer and the condition branch judgment is processed as unchecked even though it is also checked on the customizer Cause and remedy
How to change the update time (cache time) of RSS feed block

How to change the update time (cache time) of RSS feed block

  • Published：
  • WordPress

In WordPress, the update interval when receiving RSS feeds and displaying the new arrival list of external sites is set to 12 hours as standard. I’ll show you how to use a simple code to update at any time or on demand.
[WordPress] How to automatically display “old information” on posts that have passed a certain period of time since the last update date

[WordPress] How to automatically display “old information” on posts that have passed a certain period of time since the last update date

  • Published：
  • WordPress

Introducing a method to automatically display “may be old information” on the body of a post that has been created and managed by WordPress for a certain period of time since the last update date.
How to make a button that can be clicked when checked (agree with something) using jQuery

How to make a button that can be clicked when checked (agree with something) using jQuery

  • Published：2021-07-12
  • WordPress

A button that transitions to the next screen when you check “I agree with XX”, which is often seen on mail-order sites and sites that make insurance contracts. I think that it will be quite difficult, but I will introduce it because it can be implemented unexpectedly easily using jQuery in WordPress.
Even 2560px is too big! ?? How to change the automatic reduction when uploading a huge image to an arbitrary value

Even 2560px is too big! ?? How to change the automatic reduction when uploading a huge image to an arbitrary value

  • Published：
  • SEO
  • WordPress

We will introduce how to change the setting of the function that automatically reduces the long side of the uploaded huge image to 2560px, which was adopted from around WordPress 5.3, and set any size as the upper limit of the long side. All you have to do is add some simple code to your theme’s functions.php.
How to display the file size and vertical / horizontal size of the image in the media list on the WordPress management screen [Note]

How to display the file size and vertical / horizontal size of the image in the media list on the WordPress management screen [Note]

  • Published：
  • WordPress

I will introduce how to display the file size in the WordPress media list, and in the latter half, display additional image size. When searching for heavy images, it is convenient because you can check it without having to go to the media edit screen.
[WordPress] How to create a site in another language without a plugin (Example: Create an English secondary site to a Japanese site)

[WordPress] How to create a site in another language without a plugin (Example: Create an English secondary site to a Japanese site)

  • Published：2021-05-22
  • WordPress

I want to create a site in another language with the same content as well as my mother tongue! Multilingual support (multilingual). In WordPress, there are many people who use plugins to translate into other languages, but about the possibility of building by yourself, verification & management article when adding an English site to a site actually created with a Japanese site is.
How to reduce the weight of uploaded images and replace them (PageSpeed Insights score improvement measures)

How to reduce the weight of uploaded images and replace them (PageSpeed Insights score improvement measures)

  • Published：
  • SEO
  • WordPress

Using lighter and more optimal images on WordPress sites has a huge impact on PageSpeed Insights score improvement and SEO. Learn more about how to download, reoptimize, and easily and efficiently replace uploaded images with the original images using several plugins and online tools.
Verification and remedy when Warning (warning) “Attempt to read property” 〇〇 “on null in …” appears in PHP8.0 (example)

Verification and remedy when Warning (warning) “Attempt to read property” 〇〇 “on null in …” appears in PHP8.0 (example)

  • Published：
  • WordPress

After changing the PHP version of the WordPress site from 7.4 to 8.0 for several months, when I looked at the error log, I found a lot of “Attempt to read property” ID “on null in …”. In my case, I understand the cause of this warning and how to deal with it, so I will introduce it as a memorandum.
How to make the widget at the bottom follow display (fixed display to the end of the page) with CSS only

How to make the widget at the bottom follow display (fixed display to the end of the page) with CSS only

  • Published：
  • WordPress

Is it unavoidable that the sidebar is blank for long articles? I will show you how to create a follow-up widget that can be implemented in WordPress with CSS only and without plugins, and the bottom widget is displayed all the way to the end of the page.
[BbPress] How to set up a link button to move to the profile page of the user who is currently logged in to any location

[BbPress] How to set up a link button to move to the profile page of the user who is currently logged in to any location

  • Published：
  • WordPress

I will show you how to use a short code to display an independent button to go to the profile screen of the logged-in user with [bbPress], which is famous as a WordPress bulletin board creation plugin.
Inconveniences and problems that occurred when a post created with a text editor was converted to an editor with 【Switch to block editor】 of the Classic Editor plug-in [Note]

Inconveniences and problems that occurred when a post created with a text editor was converted to an editor with 【Switch to block editor】 of the Classic Editor plug-in [Note]

  • Published：
  • WordPress

Block editor【Gutenberg】 adopted from WordPress 5. Many people think that new posts are made in blocks, and those created with a text editor are converted when updating. This time I will report on the conversion problems and inconveniences that occurred in my environment when doing this work. I hope it will be helpful for checking before conversion and dealing with problems.
How to implement anti-spam measures using Honeypot in WordPress without plugins

How to implement anti-spam measures using Honeypot in WordPress without plugins

  • Published：
  • WordPress

Comment spam is a problem when running a blog on WordPress. We will show you how to take Honeypot-style comment spam prevention measures by simply adding simple code to the theme’s functions.php without plugins.
Causes and countermeasures when line breaks occur in file data when uploading / downloading files by FTP-Filezilla-

Causes and countermeasures when line breaks occur in file data when uploading / downloading files by FTP-Filezilla-

  • Published：
  • FTP

When I download a file in WordPress that I uploaded a file using Filezilla, for some reason there is a line break in each line. Even if you correct it and transfer it, the result is the same. We will introduce the cause of such a problem and the remedy.
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