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In-depth guides
Longer walkthroughs for specific setups: real screenshots, code you can paste and the reason behind every step. The short fix page for each check lives under Learn.
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346 guides, page 23 of 29.
- Social10 min read
Facebook App ID (fb:app_id): do you need it and what it changes
Most sites do not need fb:app_id: previews render without it and the Sharing Debugger warning is harmless. When the tag does matter, how to get an ID and where WordPress plugins put it.Updated 25 Sept 2026 - SEO10 min read
Favicon and touch icons: sizes and formats that work everywhere
Four files cover every browser tab, Google result, iPhone home screen and Android install prompt. The sizes, formats and link tags, one script to generate them, and how to check the result.Updated 25 Sept 2026 - Speed13 min read
Field data vs lab data: why PageSpeed and Search Console disagree
Lab data is one throttled test run; field data is 28 days of real Chrome visitors. Why the two disagree, which one Google ranks with, and what to do in each of the four combinations.Updated 25 Sept 2026 - Best practices14 min read
GA4 and Tag Manager: what they cost your page and how to load them
See what GA4 and Google Tag Manager cost your page in bytes and main-thread time, the loading options ranked by cost, Consent Mode v2 defaults in code, and a container clean-up list.Updated 25 Sept 2026 - Social11 min read
Generating Open Graph images automatically for every page
Stop making share images by hand. Build one 1200×630 template, render it from the page title at build time or on request, cache it, and check the result with a free link preview tool.Updated 25 Sept 2026 - WordPress11 min read
Hello world and Sample Page: cleaning up after a WordPress install
A fresh WordPress install ships with a sample post, page, comment, category, tagline, themes and plugins. See what to delete, what to keep and edit, and how to do it in wp-admin or WP-CLI.Updated 25 Sept 2026 - Checklists13 min read
How to read a getReport report (and what to do first)
What every part of a getReport report means, from the header and the seven module scores to Top fixes and a single finding, and the order in which to fix things so the work pays off.Updated 25 Sept 2026 - SEO11 min read
hreflang in sitemaps vs in HTML: pick one and keep it consistent
hreflang can live in the page head, in an HTTP header or in the XML sitemap. This guide compares the three, shows a working sample of each, and explains how to pick one so the sets never disagree.Updated 25 Sept 2026 - Security11 min read
HSTS: enabling it safely and joining the preload list
Turn on Strict-Transport-Security without locking anyone out, raise max-age in three stages, and decide whether the browser preload list is worth a commitment that is hard to undo.Updated 25 Sept 2026 - Best practices11 min read
HTML validation errors: which ones matter and which are noise
A validator can list 200 errors on a page that works. Learn the handful that change how browsers, screen readers and Google read the page, how to find them, and which ones you can safely ignore.Updated 25 Sept 2026 - Speed14 min read
Image CDNs and on-the-fly resizing: URL parameter or build step?
An image CDN resizes and converts to WebP or AVIF from a URL parameter, so one master serves every screen. What the services cost, the URL patterns, the pitfalls, and when a build step is enough.Updated 25 Sept 2026 - WordPress14 min read
Image optimisation plugins compared honestly
ShortPixel, Imagify, EWWW, Smush, Optimole, TinyPNG and the core Modern Image Formats plugin, compared by what they actually do, what they cost and what none of them fixes. Pick one and measure the result.Updated 25 Sept 2026
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