PluginSift

Custom HTML Block Extension vs Urvanov Syntax Highlighter (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Custom HTML Block Extension

Custom HTML Block Extension

5(13)

6.0K+ active installs

Free

Updated 1 month ago
View Custom HTML Block Extension
VS
Urvanov Syntax Highlighter

Urvanov Syntax Highlighter

4.5(19)

3.0K+ active installs

Free

Updated 9 months ago
View Urvanov Syntax Highlighter

Quick Verdict

As of April 2026, Custom HTML Block Extension has a higher user rating (5/5 from 13 reviews) and leads in active installations (6.0K+ vs 3.0K+). Both are free WordPress plugins. Custom HTML Block Extension has accumulated 47K+ total downloads while Urvanov Syntax Highlighter has 64K+.

Detailed Comparison

Rating
5/5Custom HTML Block Extension
◄
Urvanov Syntax Highlighter4.5/5
Total Reviews
13Custom HTML Block Extension
►
Urvanov Syntax Highlighter19
Active Installs
6.0K+Custom HTML Block Extension
◄
Urvanov Syntax Highlighter3.0K+
Total Downloads
47K+Custom HTML Block Extension
►
Urvanov Syntax Highlighter64K+
Support Resolution
N/ACustom HTML Block Extension
Urvanov Syntax HighlighterN/A
Last Updated
1 month agoCustom HTML Block Extension
◄
Urvanov Syntax Highlighter9 months ago
First Released
2021Custom HTML Block Extension
Urvanov Syntax Highlighter2019
Age
5 yearsCustom HTML Block Extension
Urvanov Syntax Highlighter7 years
WP Requires
6.9+Custom HTML Block Extension
Urvanov Syntax Highlighter6.7+
PHP Requires
8.0+Custom HTML Block Extension
Urvanov Syntax Highlighterfalse+
Business Model
FreeCustom HTML Block Extension
Urvanov Syntax HighlighterFree
Latest Version
4.0.0Custom HTML Block Extension
Urvanov Syntax Highlighter2.9.0

Rating Breakdown

Custom HTML Block Extension

5/5(13 reviews)
5
100%
4
0%
3
0%
2
0%
1
0%

Urvanov Syntax Highlighter

4.5/5(19 reviews)
5
84%
4
5%
3
0%
2
0%
1
11%

Recent Reviews

Custom HTML Block Extension Reviews

by johnny2ponny

Nice tool!

Love to use it.

by ryuryu1029

emmetを利用できるプラグインで最も優れています

テーマエディター上でemmetを利用したい目的から導入しました。emmetの利用はもちろん、豊富なオプションでカスタマイズ性も素晴らしいです。設定のUIも大変わかりやすいです。最終的に導入に至らなかった点は、テーマエディター上でファイル更新を行うと、ページが更新され元に戻せない点です。ページ更新やphpのエラーメッセージ表示・位置などがデフォルトの仕様であれば是非導入したいと思います。

by nikvasko

I like it very much, but…

Dear friend. You have made a wonderful plugin. I’ve wanted to find one for a long time and I’m very glad I found it. This is despite the fact that half of the plugin’s functions do not work on my comp

Urvanov Syntax Highlighter Reviews

by audioscavenger

useless for classic editor users

How about the other half of WordPress users? We stink or what?

by vasimov

Very usefull plugin

Im using it in wordpress 6.4.3. But there is one important thing: it doesnt work with default editor. I installed plugin Classic Editor, now it’s working great!

by erden15

Wonderfull

I like it a lot. It works great.

Frequently Asked Questions

Is Custom HTML Block Extension or Urvanov Syntax Highlighter more popular?
Custom HTML Block Extension has 6.0K+ active installations while Urvanov Syntax Highlighter has 3.0K+. Custom HTML Block Extension is the more widely-used plugin as of April 2026.
Which has better ratings — Custom HTML Block Extension or Urvanov Syntax Highlighter?
Custom HTML Block Extension has a 5/5 rating from 13 reviews, while Urvanov Syntax Highlighter has a 4.5/5 rating from 19 reviews.
Are Custom HTML Block Extension and Urvanov Syntax Highlighter free?
Custom HTML Block Extension is free and Urvanov Syntax Highlighter is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Custom HTML Block Extension or Urvanov Syntax Highlighter?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Custom HTML Block Extension was last updated 1 month ago and Urvanov Syntax Highlighter was last updated 9 months ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.