WordPress Themes: Signs of a Dud
First published in 2014, rewritten in 2026 so the advice holds today.
Picking a WordPress theme still means wading through thousands of options that all look fine in a screenshot. Whether you're after a free theme from the WordPress.org repository or paying for one on a marketplace, the checks that separate a solid theme from a dud haven't changed much since we first covered this. A few things matter more now than they did in 2014, mostly around security and how themes work with the modern block editor.
Read the reviews and the support forum, not just the demo
If a theme has a pile of poor reviews, believe them. It's tempting to think you'll be the exception, but negative feedback on WordPress.org or a marketplace is there because real users hit real problems. Before installing anything, check the support forum too. A theme with dozens of unanswered support requests, some going back months, tells you the developer isn't around when things go wrong.
A messy demo or documentation is a warning sign
Look at the theme's demo site and its documentation. Spelling mistakes, broken layout, or instructions that don't match what you're actually seeing all suggest an amateur operation. You can't expect a premium finish from a free theme, but there's a difference between "basic" and "buggy". If your gut says it feels unfinished, trust it.
Check the last update date, and know why it matters more now
In 2014 the worry was compatibility with new widgets and plugins. Today the bigger issue is security. Themes that haven't been updated in a year or two are a common route for attackers, and WordPress.org now flags themes in the repository that haven't been tested against the current core version. An abandoned theme isn't just inconvenient, it's a genuine vulnerability sitting on your site.
There's also a functional reason to check update history now: WordPress moved to block themes and Full Site Editing from version 5.9 (2022 onwards), built around theme.json rather than the old widgets and menus system. A theme that hasn't been touched since before then may not support block editing properly, or may only offer partial, clunky compatibility.
Be wary of free themes that come with strings attached
This point holds up completely. If getting a "free" theme means visiting a sponsor's site first, signing up to a mailing list, or installing a toolbar or extra plugin you didn't ask for, walk away. A theme's developer should want people using and reviewing their work, not funnelling them through hoops. Themes distributed this way are rarely a priority for whoever built them, and that shows in the code.
Two checks that didn't exist in 2014
- Page-builder lock-in: some themes are built to work only with one specific page builder plugin. If that plugin is abandoned or you want to move away from it later, you can end up rebuilding the site from scratch. Check whether the theme works with WordPress's own block editor as a fallback.
- Performance and Core Web Vitals: a theme loaded with unnecessary scripts and fonts will drag down page speed, which affects both user experience and search visibility. Test the demo with a free page speed tool before committing, rather than assuming a nice-looking theme is a lean one.
The underlying advice from a decade ago still stands: check what other people say before you decide you know better, judge the quality of what's in front of you rather than what's promised, and don't touch anything that's been left to rot. Add security and block-editor compatibility to that list, and you'll avoid most of the duds still doing the rounds.