-as of [19 JANUARY 2026]-
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*PROBLEMS* —>
when working with really large posts, what is actually causing the slowdown?
the wordpress site?
chrome?
computer?
i’m trying to perform a font change for all text in a really large post but i ge the “page unresponsive. wait/end page” prompt after a minute of nothing. is there any way to make this work?
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On a really large post, the slowdown is usually a perfect storm of:
What’s actually choking
1) The WordPress block editor (Gutenberg)
Every paragraph / heading / list is its own React “component.”
When you change typography, the editor often has to re-render a huge chunk of the block tree, recalculate layout, and update selections.
Autosave + block validation can add extra work while you’re mid-edit.
2) Chrome (the tab’s memory + CPU limits)
A giant editor page = a giant DOM + big JS heap.
If memory pressure hits (or a long JS task runs), Chrome throws “Page Unresponsive”.
Extensions (Grammarly, ad blockers, dark mode, etc.) can multiply the work because they scan/modify the page.
3) Your computer (RAM/CPU + thermal throttling)
If you’re near the edge on RAM, macOS starts swapping and everything feels frozen.
If CPU is pegged, the editor becomes unresponsive even if the site itself is “fine.”
4) The site/server is usually not the main cause of the freeze
The server matters most when loading the post or saving it.
The “page unresponsive” prompt is almost always the browser tab stuck doing heavy client-side work.
The easiest way to make a “font change everywhere” work
Option A (best):
don’t edit the post, change CSS instead
If your goal is “make all text in this post use font X,” you can do it without touching every block.
XYZ
Method 1:
Target that post by ID
Open the post on the front end.
View source (or Inspect) and find something like postid-12345 on the or an article wrapper.
Add CSS in Appearance → Customize → Additional CSS (or your theme’s custom CSS area):
body.postid-12345 {
font-family: “Your Font Name”, sans-serif;
}
Method 2: Add a wrapper class once
In the editor, select all blocks (or the top-level Group if you have one).
Put everything inside a Group block (one-time action).
In the Group’s “Advanced” settings, add a CSS class like joga-fontfix.
Add CSS:
.joga-fontfix {
font-family: “Your Font Name”, sans-serif;
}
This avoids the editor having to rewrite thousands of blocks.
If you must change inline / per-block typography
Try these in order (they’re the most effective “unfreeze” tactics):
1) Do it in smaller chunks (reduces re-render blast radius)
Use List View to select 50–200 blocks at a time, apply typography, repeat.
It’s annoying, but it prevents the single huge operation that locks the tab.
2) Switch browsers for the operation
Firefox sometimes handles Gutenberg’s worst-case posts better than Chrome.
Or use Chrome but in a fresh profile / Incognito with extensions off.
3) Kill extension interference
Temporarily disable: Grammarly, Honey, dark mode, screenshot tools, ad blockers, anything that injects
into pages.
These can absolutely tip a big post from “slow” to “dead.”
4) Give the tab more breathing room
Close other heavy tabs/windows.
In Chrome Task Manager (Window → Task Manager), watch the tab’s memory climb. If it’s huge, you’re in danger territory.
On macOS Activity Monitor: if Memory Pressure is yellow/red, you’re going to freeze no matter what.
5) Use the Code Editor only if you’re comfortable
Block Editor → menu (⋮) → Code editor.
If your post content is consistent (e.g., lots of repeated inline spans), sometimes a careful find/replace is faster.
But this can break block markup if you’re not precise—so only do it if you can restore a revision.
Two “escape hatches” when a post is just too big
A) Split the post
Break it into multiple posts (or child pages) and link them.
Gutenberg performance improves dramatically when you cut block count.
B) Convert sections to a single HTML block
Big sections of plain text can be put into one Custom HTML block (or fewer blocks).
Fewer blocks = less React overhead.
Downside: you lose per-paragraph block editing.
Quick triage to confirm the culprit
While it’s freezing:
If Chrome shows one CPU core maxed and the tab memory skyrockets → browser/editor problem.
If it only freezes on Save/Update → more likely server/PHP/timeouts, but that’s a different symptom than “page unresponsive.”
If you tell me:
roughly how big the post is (blocks or word count),
whether you’re using a block theme + Global Styles, and
whether you want the font change to affect front-end only or also the editor view,
…I can point you to the cleanest “one change” method for your setup (usually CSS targeting the post, which is the least painful).
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