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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 17 of 33.
- SEO8 min read
How to find the sitemap of any website
How to find the sitemap of a website, yours or anyone else's: read robots.txt, try the common sitemap paths, use the default address for each CMS, and what it means when none of them answer.Updated 26 Sept 2026 - Speed14 min read
How to improve Core Web Vitals and pass the assessment
How to improve Core Web Vitals: find the metric and template that fail in the field, fix the usual cause of each (LCP, INP, CLS) in the right order, and confirm the pass over 28 days.Updated 26 Sept 2026 - Best practices20 min read
How to make a website mobile-friendly: viewport, layout, text and tap targets
Add the viewport tag, let the layout fit any screen, keep text readable and tap targets large, and serve phones the same content Google indexes.Updated 26 Sept 2026 - Speed12 min read
How to reduce image file size without losing visible quality
To reduce image file size, resize the image to the pixels you need, compress it at a sensible quality and save it in an efficient format. The steps, the settings and the free tools, on any computer.Updated 26 Sept 2026 - WordPress17 min read
How to speed up a WordPress site: 11 steps in the order that pays off
Speed up a WordPress site step by step: measure first, then fix the server and page cache, PHP, plugins, the builder, images, scripts, fonts and background jobs, re-testing after each change.Updated 26 Sept 2026 - SEO9 min read
How to submit a sitemap to Google, Bing and every other crawler
How to submit your sitemap to Google in Search Console, step by step, add it to Bing Webmaster Tools, declare it in robots.txt so every crawler finds it, and read the statuses Search Console shows afterwards.Updated 26 Sept 2026 - WordPress9 min read
How to tell what WordPress theme a site is using, child themes included
To tell what WordPress theme a site is using, search its page source for /wp-content/themes/: the folder name after it is the theme. How to confirm the name and version from the theme stylesheet, spot a child theme and its parent, and why theme detectors sometimes fail.Updated 26 Sept 2026 - SEO11 min read
hreflang and canonical tags: how to use them together
hreflang and canonical tags do different jobs, and they only work together when every language version is canonical to itself. The rules, examples for tricky cases, and the conflicts that make Google ignore your hreflang.Updated 26 Sept 2026 - SEO11 min read
hreflang language and region codes: the reference table
hreflang language codes are ISO 639-1 two-letter codes, optionally followed by an ISO 3166-1 country code or an ISO 15924 script. A reference of valid codes for Spanish, English and other common languages, the look-alikes Google ignores, and how to choose.Updated 26 Sept 2026 - SEO14 min read
hreflang: what it is and how to implement it
hreflang tells Google which language or country version of a page to show each searcher. The syntax, the three places it can live, working examples and the rules that make it count.Updated 26 Sept 2026 - SEO9 min read
HTML sitemap vs XML sitemap: who each is for and whether you need both
An HTML sitemap is a page for people that links to the main sections of a site; an XML sitemap is a file for search engines. What each does, when an HTML sitemap is worth building, and how to make a good one.Updated 26 Sept 2026 - SEO17 min read
HTTP status codes: the full list for site owners, with SEO effects
HTTP status codes are the three-digit answers a server gives to every request. Every code a site owner meets, what browsers do with it and how Google treats it.Updated 26 Sept 2026
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