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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 16 of 33.
- Security9 min read
Gmail, Yahoo and Outlook bulk-sender requirements: the DMARC rule and the rest
Google's DMARC requirement, and the rest of the Gmail, Yahoo and Outlook rules for bulk senders: SPF and DKIM, an aligned DMARC record, one-click unsubscribe and a spam rate under 0.3%. Who counts as a bulk sender and how to check you comply.Updated 26 Sept 2026 - Best practices14 min read
Google Analytics and the GDPR: is it compliant, and how to run it with consent
Google Analytics can be used lawfully under the GDPR, but not by default: it needs prior consent in the EU, the right GA4 settings, a data processing agreement and an honest privacy notice. What the regulators decided and what to set.Updated 26 Sept 2026 - Best practices13 min read
Google Consent Mode v2: basic vs advanced, and what it changes in GA4 and Ads
Google Consent Mode passes each visitor's cookie choice to Google tags so they adjust what they store and send. What v2 added, basic vs advanced mode, what changes in GA4 and Google Ads, and how to set it up and verify it.Updated 26 Sept 2026 - Security10 min read
Google Workspace SPF record, DKIM and DMARC: the complete setup
The Google Workspace SPF record is v=spf1 include:_spf.google.com ~all. How to publish it, turn on Google Workspace DKIM in the Admin console, and set up DMARC, with the exact records and the mistakes that break them.Updated 26 Sept 2026 - SEO23 min read
Googlebot and crawling: how search and AI bots crawl your site
Googlebot is the crawler Google Search uses to fetch web pages. How it finds, fetches and renders your pages, how Bingbot and AI crawlers differ, and what your server logs show about all of them.Updated 26 Sept 2026 - SEO9 min read
Googlebot user agent strings: every Google crawler and what it does
The Googlebot user agent strings for Smartphone and Desktop, the other Google crawlers you will meet in a log, the robots.txt token each obeys, and the Bingbot strings for comparison.Updated 26 Sept 2026 - Security23 min read
Hacked website? The signs, how to confirm it, and how to recover
A hacked website rarely looks hacked to its owner. Learn the signs, see your site the way Google does, confirm what you find and clean it so the spam does not come back.Updated 26 Sept 2026 - Speed14 min read
How important is page speed for SEO? What Google has said since 2010
Page speed is a real but modest Google ranking factor: it helps between pages of similar relevance and never beats a better answer. What Google measures, what else speed changes for search, and when it is worth the work.Updated 26 Sept 2026 - SEO9 min read
How to add a canonical tag in WordPress and Shopify
Where WordPress core, Yoast SEO, Rank Math, All in One SEO and Shopify themes print the canonical tag, how to change it for one page or a whole template, and how to fix the duplicates each platform tends to create.Updated 26 Sept 2026 - SEO11 min read
How to create a sitemap: by CMS, by generator or by hand
How to create a sitemap for any site: check whether your CMS already makes one, switch it on in WordPress, Shopify, Wix or a framework, generate one by crawling, or write the XML yourself, then publish and submit it.Updated 26 Sept 2026 - SEO10 min read
How to detect AI crawlers on your website using server logs
How to detect AI crawlers on your website: find GPTBot, ClaudeBot, PerplexityBot and others in your access log, verify they are real, and measure their share of your requests and bandwidth.Updated 26 Sept 2026 - Speed12 min read
How to enable HTTP/2 and HTTP/3 on nginx, Apache, Caddy and Cloudflare
How to enable HTTP/2 and HTTP/3: the exact nginx, Apache, Caddy, LiteSpeed, IIS and Cloudflare settings, the firewall rule HTTP/3 needs, and how to check that browsers really use them.Updated 26 Sept 2026
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