Guides
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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385 guides, page 7 of 33.
- Accessibility15 min read
WCAG color contrast: the ratios, and how to fix low-contrast text
WCAG color contrast asks for a ratio of at least 4.5:1 for normal text and 3:1 for large text, buttons and focus rings. Here is how the ratio works, the colours that fail most and how to fix them once in your theme.Updated 4 Oct 2026 - Best practices14 min read
What are cookies on a website? First-party, third-party, session and persistent
Cookies on a website are small pieces of text a site asks your browser to store and send back on later visits. What they do, first-party vs third-party, session vs persistent, and whether they are safe.Updated 4 Oct 2026 - Speed14 min read
What is a CDN? What it fixes for speed, and what it does not
A CDN (content delivery network) is a set of servers around the world that keep copies of your files and answer each visitor from the nearest one. What that speeds up, what it cannot, and how to set one up without caching the wrong pages.Updated 4 Oct 2026 - Platforms17 min read
What is a CMS, and how to tell which one a website uses
A CMS (content management system) is the software that lets people publish and edit a website without writing code. What a CMS does, the main types, and how to tell what any website is built with.Updated 4 Oct 2026 - Security13 min read
Why are my emails going to spam? A diagnosis in six steps
Why your emails go to spam, and how to find out which reason applies to you: authentication, a tool sending as your domain, reputation, server basics or content. Check them in this order and fix the first one that fails.Updated 4 Oct 2026 - WordPress11 min read
WordPress login URL: how to find it, and how to protect it with 2FA and rate limits
The WordPress login URL is yoursite.com/wp-login.php, and /wp-admin/ takes you there too. Here is how to find it on any install, why bots hammer it, and how to protect it with two-factor login and rate limits.Updated 4 Oct 2026 - SEO14 min read
AI SEO: how to make your site visible in AI search
AI SEO is the work of making your site visible in AI search: let AI crawlers read your pages, serve text they can parse and publish answers worth citing.Updated 2 Oct 2026 - Security22 min read
SSL and TLS: how HTTPS works and the checks that matter
HTTPS is an SSL/TLS certificate, a handshake and a few server settings working together. This guide explains the whole system in plain language, then the checks that keep the padlock on.Updated 2 Oct 2026 - Checklists9 min read
Check your website in CI with the getReport GitHub Action
Run a full getReport checkup on every deploy, fail the build when a score drops below your minimum, and read every finding with its fix in the job summary.Updated 29 Sept 2026 - SEO11 min read
How often does Google crawl a site? Crawl rate and the Crawl stats report
How often Google crawls a site depends on how much it wants your pages and how much your server can take. How to read the real crawl rate in Search Console's Crawl stats report and your logs, and how to get pages crawled sooner.Updated 28 Sept 2026 - Speed19 min read
HTTP/2 and HTTP/3 explained: what they change for speed and how to turn them on
HTTP/2 loads every file of a page over one connection at once; HTTP/3 does the same over QUIC with a faster handshake. What each changes, how to check yours and how to turn them on.Updated 28 Sept 2026 - SEO21 min read
Website migration SEO: plan, redirect and verify a move without losing traffic
A website migration moves a site to a new domain, platform, URL structure or host. How to plan it, redirect every old URL and verify the move so search traffic survives.Updated 28 Sept 2026
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