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Does your host support object caching? With the Redis and WordPress logos, xSpeed cover
Object CacheRedis

Checking Whether Your Host Supports Object Caching in 2026: WordPress Never Opens the Connection

WordPress decides whether your host supports object caching from five PHP extension names, and never opens the connection. Four checks that answer it properly.

Sep 29, 2026 9 min read
WP-Optimize vs WP Rocket, with the WP-Optimize name and WP Rocket logo, xSpeed cover
WP-OptimizeWP Rocket

WP-Optimize vs WP Rocket 2026: Only One Compresses an Image, and It Sends the File Somewhere Else

WP-Optimize compresses images free by posting every file to reSmush.it with a 5 MB ceiling. WP Rocket does not compress at all. Both cache, minify and clean the database.

Sep 29, 2026 20 min read
Brotli was bigger than gzip, with the WordPress logo, xSpeed cover
CompressionPerformance

Brotli Was Bigger Than Gzip on 31% of WordPress Sites in 2026: Read the Bytes, Not the Header

2,787 scan reports and 159 byte-identical documents, measured 29 September 2026. Brotli beat gzip by a median 1.29 KB, and lost outright on 31.4% of sites.

Sep 29, 2026 18 min read
Delay JavaScript broke the menu, with the WordPress logo, xSpeed cover
PerformanceTroubleshooting

Delay JavaScript Broke the Menu: The Script Ran After the Event It Was Waiting For

A delayed script is not a slower script. It runs in a document that already fired the event it was written to wait for. Three loads tell you which cause you have.

Sep 28, 2026 7 min read
Remove unused CSS Lighthouse ignores, with the Lighthouse and WordPress logos, xSpeed cover
CSSPerformance

Removing Unused CSS From WordPress in 2026: Lighthouse Skips Every Sheet Under 10 KiB

Lighthouse skips any stylesheet with 10,240 bytes or less of unused CSS, and Google's own guide says 2,048. How to find, remove and defer CSS on WordPress.

Sep 28, 2026 10 min read
The best WordPress caching plugin, with the FlyingPress, WP Rocket, LiteSpeed, W3 Total Cache, Perfmatters and xSpeed Cache logos, xSpeed cover
CachingComparison

We Scored 11 WordPress Cache Plugins Twice in 2026, and One Criterion Moved Us From First to Fourth

Eleven caching plugins scored from their own shipped source on 28 September 2026. On an unweighted feature grid we win. Weight track record and we come fourth.

Sep 28, 2026 39 min read
A CDN alone barely moves TTFB, with the Cloudflare and bunny.net logos, xSpeed cover
CDNTTFB

Adding a CDN Took 29ms Off WordPress TTFB in 2026. Making the Edge Answer Took 298

1,748 WordPress sites measured to 28 September 2026. A third have a CDN, and three of five on Cloudflare still send every page request to the origin.

Sep 28, 2026 18 min read
Reduce TTFB: measure the real number, with the WordPress logo, xSpeed cover
TTFBPerformance

Reducing WordPress TTFB in 2026: The Number in Site Health Is Not Time to First Byte

WordPress core calls a server response good under 600ms, but it times a request the server makes to itself and waits for the whole page. Which number to reduce first.

Sep 27, 2026 9 min read
NitroPack vs WP Rocket, with the WP Rocket logo and the NitroPack name, xSpeed cover
NitroPackWP Rocket

NitroPack vs WP Rocket: Four Metered Limits, One Flat Licence, and Three Cloud Jobs Inside the Plugin in 2026

NitroPack meters four things, and its own pricing table calls pageviews the traffic you can generate before optimizations stop. WP Rocket meters one website.

Sep 27, 2026 21 min read
The 350 KB cliff, with the WordPress logo, xSpeed cover
Core Web VitalsPerformance

The 350 KB Cliff: Where Page Weight Starts Deciding Mobile LCP on 912 WordPress Sites in 2026

912 WordPress sites measured on 27 September 2026. Transfer weight predicts mobile LCP better than our own lab score does, and the threshold that matters is 350 KB.

Sep 27, 2026 18 min read
Fast signed out, slow signed in, with the WordPress logo, xSpeed cover
CachingTroubleshooting

Fast Signed Out, Slow Signed In: Every Request You Make Runs the Whole of WordPress

WordPress recommends a persistent object cache once 500 options autoload. A fresh install starts at 95. Why signing in leaves the page cache behind.

Sep 26, 2026 7 min read
W3 Total Cache vs WP Super Cache, with the W3 Total Cache logo and the WP Super Cache name, xSpeed cover
W3 Total CacheWP Super Cache

W3 Total Cache vs WP Super Cache in 2026: 510 Configuration Keys Against One Click That Sets Four

W3 Total Cache ships 510 configuration keys and 20 of 21 master switches default off. WP Super Cache's Easy tab is one click that sets four. Both cache nothing at first.

Sep 26, 2026 19 min read

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