Custom HTML Block Extension
by Aki Hamano · Blocks
Also makes 5 other plugins · 53K+ installs across the portfolio →
Extend Custom HTML block to evolve into the advanced code editor.
Try it live opens a temporary test site in your browser, which can take about 20 seconds to load. Plugins that rely on outside services or a full server may not work completely there.
Health
A 88/100
no flags
Active installs
7K+
≈7.5K estimated
Momentum
-9%
downloads vs prior 30d
Biggest opportunity: Swap “block” and “gutenberg” for “extension” and “custom block”. “block” isn't earning its slot: you're not in the first 24 results for its own search. “extension” sits at #9 untagged, close enough for a declared tag to move it up. “gutenberg” isn't earning its slot: you're not in the first 24 results for its own search. “custom block” sits at #14 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
88 health vs 71 average across 2,526 Blocks plugins
Install conversion
How it's measured →12%
of downloads still active
At least 7K of 60.7K lifetime downloads are still running, above its category: the median Blocks plugin keeps 2.1%, across 1,580 plugins.
Downloads count every update, not just first installs, so older and more frequently released plugins read lower. Compare against other Blocks plugins, not across the directory. wp.org reports active installs as the bottom of a band, so the real rate is this or higher.
This plugin shipped 4 releases in the last 12 months, and every existing install that updated counted as another download. wp.org publishes no split between first installs and updates, so we show the raw rate rather than guess at one.
Details
Directory ranking optimization
How it's scored →How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.
Well optimized
Most to gain: Support resolution
Updated 98 days ago
Tested up to WordPress 7.1.4, the current branch or newer
5.0★ over 13 reviews, smoothed to 4.29★ and held back under 25 reviews
5 of 5 tags set · short description in place
0 of 1 support threads resolved in the last 2 months
To rank higher: Mark more forum threads resolved — the resolved ratio feeds the ranking.
Get the full rank-higher report →Search visibility
How it's tracked →Directory searches this plugin turns up in, and which way each one is moving. WordPress.org publishes no history of search positions, so this starts the day we first tracked a keyword and never backfills.
39
Momentum
Losing ground
-0.3
Velocity
places per keyword, 28d
22%
Breadth
of keywords climbing, 28d
-0.3
Acceleration
recent half vs earlier
wp.org is where the directory puts the plugin for that search. On merit is where it would sit if results were ranked on rating, support and updates, without the install boost. The last column is how far the wp.org position moved, from our first reading in the last 90 days to the latest.
| Keyword | wp.org | On merit | wp.org move, 90 days |
|---|---|---|---|
| html block | #1 | #1 | 0 |
| emmet your tag | #1 | #1 | 0 |
| custom html | #2 | #5 | 0 |
| emmet editor | #2 | #2 | 0 |
| html your tag | #7 | #11 | 0 |
| extension | #9 | #14 | 0 |
| highlighting your tag | #16 | #22 | down 5 |
| welcome to the block editor | #7 | #9 | 0 |
| add extension | #8 | #14 | 0 |
| add html | #8 | #12 | 0 |
| custom block | #14 | #21 | 0 |
| page extension | #10 | #20 | up 2 |
| php html editor | #12 | #19 | up 1 |
| html code | #12 | #15 | 0 |
| html editor | #12 | #16 | 0 |
| block your tag | Not in the top 24 | ||
| gutenberg your tag | Not in the top 24 | ||
77 searches this plugin appeared in over the last 90 days, 15 listed. 62 left out as unrelated or noise (years, numbers, stray words). 2 of its tags aren't in the top 24 for their own search.
What to do about it
- Swap “block” and “gutenberg” for “extension” and “custom block”. “block” isn't earning its slot: you're not in the first 24 results for its own search. “extension” sits at #9 untagged, close enough for a declared tag to move it up. “gutenberg” isn't earning its slot: you're not in the first 24 results for its own search. “custom block” sits at #14 untagged, close enough for a declared tag to move it up. All five slots are taken, so one has to go.
- Slipping on “highlighting”. Down 5 places since 2026-09-23, now #16. Check what shipped around then, and what moved above you.
Daily downloads
Since 5 Oct 2022 · 1,489 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peak 4.1K · peaks are release surges
Directory rank vs rivals
wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you
Health trend
Composite health score, snapshotted daily
Update activity
How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.
Release cadence
Actively maintainedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
4
releases in the last 12 months
3mo ago
latest release · v4.1.0 · 26 Jul 2026
45
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin. Green is the current release; a big slice on older versions is a user base that has stopped updating.
Estimated active installs
The public count shows “7K+”. Our estimate pins where the real number sits.
Crossed into this band 6 months ago; a band this size takes about a year or more to cross, which places it about 45% of the way through.
At the current install trend, crossing 8K+ in roughly 419 days.
Install history since 16 Oct 2021
Recent reviews
All reviews on wp.org ↗- ★★★★★ johnny2ponny10mo ago
Love to use it.
Read on wp.org ↗ - ★★★★★ ryuryu10291.7y ago
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。
Read on wp.org ↗ - ★★★★★ nikvasko3.7y ago
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 computer. Minimap, code folding, suggest function are absolutely dead. But there is a wonderful indentation system. Find and replace text works great. Code coloring is remarkably fast. Well chosen colors. Very convenient multiple selection and correction.Indeed, I have tried dozen of editors and coloring systems, no one of them is comparable to your package. Huge thanks to you for your work. Maybe you will find time to understand Why some of the functions do not work on my computer. I am working with WordPress 6.1.1, PHP 7.4.26 system. Even if you only make assumptions, I will be extremely grateful to you. I am Nick, best regards!
Read on wp.org ↗ - ★★★★★ TRUmsg4.1y ago
Coding candy!
Read on wp.org ↗ - ★★★★★ WP Forhad4.1y ago
That’s what I’ve been looking for ♥♥
Read on wp.org ↗ - ★★★★★ hefin4.2y ago
<p>This plugin is solid. I LOVE it!Adds much-needed functionality to the Custom HTML block and then some.<br />Unbelievably well put together, you can tell the developer of this plugin has put much time and effort into its creation.<br />The options/settings available for the plugin are extensive and the little helper pop-up showing you visual representations of what the option does is really useful and intuitive.<br />The HTML custom extension also appears to remove wpAutop which is a filter which automatically adds to text. Which is great.<br />Your HTML formatting is retained! Yes, you heard right all your indents and extra lines etc, are not lost on save like the standard HTML editor.<br />Wow just Wow, congratulations to the Author of this plugin is very powerful, very useful and very well put together.<br />This plugin is an absolute must if you work with CustomHTML blocks at all!</p> <p>In the future would love to see this in use in the Code Editor mode (which for those who don’t know is accessed via the visual editor with Ctrl+shift+alt+M)</p> <p>Thank you Aki Hamano! Hope this becomes core functionality in WordPress one day.</p> This topic was modified 3 years, 10 months ago by hefin. This topic was modified 3 years, 6 months ago by hefin. Reason: spelling error This topic was modified 3 years, 6 months ago by hefin. Reason: wordpress adding so removing This topic was modified 3 years, 6 months ago by hefin. This topic was modified 3 years, 6 months ago by hefin.
Read on wp.org ↗ - ★★★★★ kitakami4.8y ago
A god plugin. It’s a plugin you want even if you pay for it!
Read on wp.org ↗ - ★★★★★ 96ssbike5.2y ago
カスタムHTMLブロックの編集に、驚きのEmmet実装！ それだけではなく、オプションの多さ（そして、必要最低限のベーシックの設定部分はコンパクトでわかりやすくなっている）が大変気に入っています。 神プラグインだと思います。
Read on wp.org ↗
Latest updates
via wp.org changelogRecent releases and news for this plugin
- — Version 4.0.1 Fix: Undo clears all content right after the editor loads Fix: Focus scrolls the page in the classic editor. 4.0.1
- — Version 4.0.0 Tested to WordPress 7.0 Drop support for WordPress 6.8 Remove change indentation UI Fix: Editor crashes when switching to the Code Editor in Firefox Fix: Cut line shortcut doesn’t work 4.0.0
- — Version 3.9.0 Tested to WordPress 6.9 Drop support for WordPress 6.6 and 6.7 Drop support for PHP 7 Enhancement: Show notification after exporting on the settings page Enhancement: Adjust UI elements to new 40px size 3.9.0
- — Version 3.8.0 Tested to WordPress 6.8 Drop support for WordPress 6.5 Enhancement: Use WordPress snackbar on the settings page Fix: No alert when leaving the theme/plugin editor Fix: Ajax on save doesn’t work in the theme/plugin editor 3.8.0
- — Version 3.7.0 Tested to WordPress 6.7 Drop support for WordPress 6.4 Enhancement: Polish styles and layouts Fix: Minimap and toolbar overlap in the classic editor 3.7.0
- — Version 3.6.0 Tested to WordPress 6.6 Drop support for WordPress 6.3 Fix: Editor duplication on the classic editor Fix: Critical error when clicking tab on the settings page Fix: Ctrl+S shortcut not working on the classic editor Fix: 3.6.0
Languages
via translate.wordpress.orgTranslated into 1 language, 1 at 90% or more
AI assistants
How it's measured →Whether ChatGPT and Claude name this plugin when asked the category question, and whether the readme gives them something to quote.
Not measured yet for this plugin’s topics. Its tracked searches are not among the measured topics. See the topics measured so far.
Readme readiness
3 of 8 pass · checked 26 Oct 2026Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.
- ✓ Says what it does "Extend Custom HTML block to evolve into the advanced code editor."
- ! Has a FAQ No FAQ section.
- ! FAQ asks real questions No FAQ to judge.
- ! Names who it is for Never says who the plugin is for or what they use it for.
- ! Names what it works with Names no plugin, service or platform it works with.
- ! Headings and lists 9 headings and 0 lists; assistants quote headed sections and bullet lists, not paragraphs.
- ✓ Enough to quote 1,283 characters of description.
- ✓ Tags match the text 3 of 5 tags appear in the text; "gutenberg", "highlighting" do not.
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2026-05-19 6K+ → 7K+ up after 167 days in tier
- 2025-12-03 5K+ → 6K+ up after 117 days in tier
- 2025-08-08 4K+ → 5K+ up after 1 days in tier
- 2025-08-07 5K+ → 4K+ down after 1 days in tier
- 2025-08-06 4K+ → 5K+ up after 168 days in tier
- 2025-02-19 3K+ → 4K+ up after 312 days in tier
- 2024-04-13 2K+ → 3K+ up after 263 days in tier
- 2023-07-25 1K+ → 2K+ up after 5 days in tier
Competes with
The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).
-
Spectra Legacy – Gutenberg Blocks 1M+ installs · 4.7★ · 2 shared tags A -
Crowdsignal Forms 200K+ installs · 4.1★ · 2 shared tags A -
Flexible Table Block 40K+ installs · 4.6★ · 2 shared tags A -
Genesis Blocks 40K+ installs · 3.8★ · 2 shared tags B -
Snow Monkey Forms 30K+ installs · 4.3★ · 2 shared tags A -
Snow Monkey Blocks 30K+ installs · 4.1★ · 2 shared tags A
Embed this report card
Drop a live Pulse card for Custom HTML Block Extension into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/custom-html-block-extension" width="480" height="300" style="border:0" loading="lazy" title="Custom HTML Block Extension — Plugin Pulse"></iframe> Custom HTML Block Extension: 7K+ active installs, 5.0★ (13 reviews). Plugin Pulse (WP Mayor), as of 2026-11-01. https://plugins.wpmayor.com/plugin/custom-html-block-extension
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