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.
All guides
385 guides, page 2 of 33.
- Platforms25 min read
Shopify SEO: the complete guide
Shopify writes the canonicals, the sitemap and robots.txt for every store; the rest of Shopify SEO is yours. What is built in, what you control and how to check each part.Updated 1 Nov 2026 - Checklists14 min read
Black Friday website checklist: the four-week countdown
A four-week countdown to Black Friday: measure your speed now, freeze and test the checkout, publish deal pages early, and plan what to switch off under load.Updated 30 Oct 2026 - Best practices9 min read
ERR_ADDRESS_UNREACHABLE: when there is no route to the address
ERR_ADDRESS_UNREACHABLE means your device found no route to the site's address. A VPN remnant, broken IPv6 or a stale router causes most cases.Updated 29 Oct 2026 - Best practices10 min read
Is my website down? The 5-minute triage
A website down checker tells you whether your site is down for everyone or just you. Here is the 5-minute triage, and what to do in the first 10 minutes.Updated 28 Oct 2026 - Security13 min read
What is an SSL certificate? Inside the file
An SSL certificate is a signed file that binds your domain name to a public key, issued by an authority browsers trust. Here is everything inside it.Updated 27 Oct 2026 - Best practices10 min read
ERR_CONNECTION_TIMED_OUT: what the silence means and how to fix it
ERR_CONNECTION_TIMED_OUT means the browser asked for a connection and nothing ever answered. Clear the visitor-side causes in minutes, then find what is swallowing packets on the way to your server.Updated 26 Oct 2026 - SEO11 min read
How to improve brand visibility in AI search engines
Being named and recommended in AI answers is different work from getting pages cited. Where assistants learn brand reputation, and which levers are real.Updated 25 Oct 2026 - Security13 min read
What is an SSL handshake? Every step, in plain language
The SSL handshake, today a TLS handshake, is the short exchange in which a browser and a server agree on encryption before any page data moves. Here is each step of the TLS 1.3 exchange, what it costs in milliseconds, and where it breaks.Updated 24 Oct 2026 - Best practices10 min read
ERR_NAME_NOT_RESOLVED: fix it on Android and desktop
ERR_NAME_NOT_RESOLVED means Chrome could not get any usable DNS answer for the address, so it had nothing to connect to. Here is the Android fix ladder with the exact settings paths, the short desktop version, and the rare case where the site is the cause.Updated 23 Oct 2026 - Best practices12 min read
WHOIS lookup: read a domain's public record
What a WHOIS lookup shows and how to run one: every field of the record explained, the status codes that protect a domain, and where RDAP has taken over.Updated 22 Oct 2026 - Best practices12 min read
ERR_CONNECTION_REFUSED: fixes for visitors, localhost and servers
ERR_CONNECTION_REFUSED means the machine is there and actively turned the connection away. Here are the visitor steps, the localhost diagnosis with the exact commands, and the server-side causes in the order they actually occur.Updated 21 Oct 2026 - SEO18 min read
'Crawled - currently not indexed': what it means and how to fix it
Google fetched the page, read it and left it out of the index. What the status means next to its neighbours in the Page indexing report, the causes in order of likelihood, a raw-HTML test you can repeat, and the fix per platform.Updated 20 Oct 2026
Guides tell you how. Your report tells you what.
Run a free report to see which of these guides apply to your site.