WP-Optimize
95Get caching and more with this powerful cache plugin. Cache, optimize images, clean your database and minify f...
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1M+ installs 4.8★ (2,606)
Cacheability
HTTP optimization for WordPress. Fixes soft 404 errors and adds smart cache headers.
The facts
- Active installs
- 100+
- Price
- Free
- Last updated
- 20 Aug 2026
- Added
- Apr 2022
- Requires WP
- 5.0
- Tested up to
- WP 7.0.4
- Requires PHP
- 7.0
- Downloads
- 5,578
Our analysis
AI-assistedCacheability is a WordPress plugin designed to enhance your site's HTTP performance and SEO by addressing common caching issues. It fixes soft 404 errors by returning the correct status codes for empty search results, tag archives, and category archives. Additionally, it implements smart cache-control headers to improve caching efficiency for various server setups.
This plugin is suitable for WordPress site owners who want to improve their site's SEO and ensure better cache management. It is particularly useful for those who manage sites with empty content pages that could negatively impact search engine rankings.
Best for: WordPress site owners looking to improve SEO and caching efficiency.
What it does well
- ✓Fixes soft 404 errors for empty search and archive pages
- ✓Implements smart cache-control headers for better caching
- ✓Free to use and available on WordPress.org
- ✓Active installation count of 100
Where it falls short
- •Limited features compared to the Pro version
- •No published rating available
- •Data on performance impact is not provided
Verdict
Cacheability offers essential features for optimising HTTP responses and caching on WordPress sites. It may be a good fit for those focused on SEO and cache management.
From the developer
Danila Vershinin's own description of Cacheability, lightly tidied.
Cacheability makes your WordPress site a better HTTP citizen, improving SEO and cache efficiency.
Free Features
Soft 404 Fix
WordPress returns HTTP 200 for empty search results, invalid tag pages, and empty category archives. Google marks these as “soft 404” errors in Search Console, hurting your SEO.
Cacheability fixes this by returning proper 404 status codes when:
- Search results are empty (
/?s=nonexistent) - Tag archives are empty (
/tag/nonexistent/) - Category archives are empty
- Author archives are empty
Smart Cache-Control Headers
Automatically adds s-maxage headers so Varnish, NGINX, and CDNs can cache your pages efficiently without affecting browser caching behavior.
- Search/404 pages: 1 hour cache
- All other pages: 1 year cache (your purge plugin handles invalidation)
Cacheability Pro
Upgrade to Cacheability Pro for advanced features:
- Cache Warming — Automatically warm pages after purging so visitors never hit cold cache
- Conditional GET (304) — Return 304 Not Modified for unchanged content, saving bandwidth
- ESI Support — Cache pages with dynamic nonces (comments, login forms)
- Rate-Limit Safe — Smart request queuing to avoid 429 errors
- Sitemap Warming — Warm all pages from sitemap after full purge
- WP-CLI Commands —
wp cacheability warmand more - Priority Support — Get help when you need it
Tagged as
industry
Library & Archive
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