Block theme vs page builder: which should you actually use?
Two ways to build a WordPress page, and the choice is quieter than the marketing on either side suggests.
A block theme builds pages with the editor WordPress already ships. A page builder installs a second editor on top of it. Blocks win on portability, editor familiarity and cost. Builders win on visual freedom and speed of first build. Which one is right depends on who has to maintain the site after you.
We maintain WordPress sites for other people, so we inherit both kinds. This is the comparison as it looks from the maintenance side, where the interesting differences show up two years in rather than on launch day.
Block theme vs page builder: the short comparison
The core difference is where your layout is stored. In a block theme it is in the post. In a page builder it is in the plugin. Everything else follows from that.
| Block theme | Page builder | |
|---|---|---|
| Layout stored in | The post, as HTML | The plugin |
| Editor | The one WordPress ships | A second one you install |
| Survives a theme switch | Yes, restyled | No, leaves shortcodes |
| Visual freedom | Constrained by the theme | Close to unlimited |
| Typical cost | Free or one-off | Annual, often per site |
| Front-end weight | Theme CSS and little JS | Builder CSS and JS on every page |
| Who can edit it later | Anyone who knows WordPress | Anyone who knows that builder |
Read that last row twice. It is the one that decides most handovers, and it is the one nobody asks about at the start of a project.
What is a block theme, exactly?
A block theme is a WordPress theme designed around the block editor, where pages are assembled from blocks rather than from a builder’s own canvas. The blocks are saved into the post as ordinary HTML with comment markers, so the content is readable with or without the theme.
Some block themes ship only the WordPress core blocks. Others add their own, which is where the useful nuance sits. A theme block that renders on the server produces plain markup. A theme block that renders only in the browser leaves a placeholder that dies with the theme, which is the same failure mode as a builder wearing different clothes. The block editor handbook calls these dynamic and static blocks, and the distinction matters more than the label.
Where page builders are genuinely better
At arbitrary visual layout, and at getting a first version live fast. If you need an element positioned somewhere the theme did not anticipate, a builder will do it and a block theme will fight you.
They are also better when the person building is not a developer and the site has to look a specific way now. That is a real requirement and pretending otherwise is how block advocacy loses credibility. The honest position is that builders solve a problem blocks solve less well, and charge you in portability rather than in money.
What we would not do is use one for a site somebody else will inherit. That is a different job with a different constraint.
Where block themes are genuinely better
At outliving the person who built them. Content stays readable, the editor is the one WordPress documents, and there is no licence between a client and their own pricing page.
The practical version, from taking over sites: a client on blocks can usually change their own opening hours. A client on a builder often cannot, because the field they need is three panels deep in an interface built for designers. That gap generates support tickets for years, and it is invisible when you are choosing.
Weight helps too, though less than the marketing claims. Our own theme ships 14 KB of JavaScript. The page you are reading loads considerably more, because plugins account for most of it. Removing a builder is a real saving. It is not a performance plan.
Inheriting a site and not sure which you are dealing with? Send us the URL and we will tell you, free.
Which should you choose?
Answer one question first: who edits this site in two years? If the answer is you, pick whichever you are faster in. If it is anyone else, the calculation changes.
- Choose a block theme if a client will edit it, you build more than a handful of sites a year, the site has to survive you, or you would rather not track renewals.
- Choose a page builder if the design is unusual and fixed, the site is short-lived, you are the only editor, or the deadline is measured in days.
- Choose either if it is a personal project. Portability costs nothing to have and matters only when it matters.
There is a middle option people forget: a block theme with enough section blocks that you rarely need arbitrary layout. That is the trade we made. Forty-three blocks covering the sections marketing pages actually use, which handles most briefs without a canvas, and does not pretend to handle all of them.
Can you use both on the same site?
Yes, and plenty of sites do without anyone deciding to. A builder handles the landing pages, blocks handle the blog, and the two coexist. It works, with one caveat worth knowing.
The caveat is that you now carry both dependencies and get the portability of the weaker one. When somebody eventually asks “can we drop the builder”, the answer is yes for the blog and no for the pages that earn money. Mixed sites are not a problem to fix urgently. They are just worth knowing about before the question arrives.
Frequently asked questions
Is the block editor the same thing as a block theme?
No. The block editor is the editing screen WordPress ships. A block theme is a theme built to work with it, usually adding its own blocks and styles. You can use the block editor with a theme that is not a block theme.
Are block themes faster than page builders?
Usually lighter, because there is no second editor loading its CSS and JavaScript on the front end. Whether that makes a measurable difference depends on your plugins, which are often the larger share of the page.
Can I switch from a page builder to a block theme?
Yes, but it is a rebuild rather than a conversion. The text carries over, the layout does not. Budget a day or two for a small brochure site, and expect the surprises to come from plugins rather than pages.
Do block themes limit my design?
They constrain it, which is a different thing. A good block theme gives you enough section types that the constraint is invisible for most briefs, and obvious the moment you need something genuinely bespoke.
Which is better for client sites?
Blocks, in our experience, and the reason is editing rather than performance. Clients change their own copy more often on block sites, which means fewer small invoices and fewer sites that quietly go stale.
Do I have to pay for a block theme?
No. WordPress themes are GPL licensed, and many good block themes are free. Ours is free and can be rebranded, which matters for agencies building under their own name.
The short version
The block theme vs page builder question is really a question about time. Over a few months a builder is faster. Over a few years a block theme is cheaper, more portable and easier to hand over. Decide which timescale your site is actually on, then pick accordingly.
If you want the long version of why we came down on one side, the no page builder stance covers it, and page builder lock-in covers what it costs when the trade goes wrong. We also maintain WordPress sites built either way.