What are good Core Web Vitals scores?
The target numbers for LCP, INP and CLS, how the 75th percentile rule works and what Needs improvement and Poor mean, in one short reference page.
Guides
Practical, step-by-step website launch and SEO health guides.
Categories: All (297)
Showing 193 to 216 of 297 guides (page 9 of 13)
What are Open Graph tags?
Open Graph tags are meta tags that set the title, description and image shown when your page is shared on social sites and in chat apps. See the main tags.
What are render-blocking resources?
Render-blocking resources are CSS and JavaScript files that stop a page from showing anything until they load. Learn how to spot and unblock them.
What causes layout shift (CLS)?
The usual culprits behind a poor CLS score: images without sizes, late embeds, injected banners, web fonts and animations. Learn how to spot each one.
What do Google and Yahoo require from bulk email senders?
A plain summary of the Google and Yahoo bulk sender rules: SPF, DKIM, DMARC, one-click unsubscribe and spam complaint limits, with where to confirm them.
What does 'p 0' in DMARC mean?
Find out why p=0 is not a valid DMARC value, what people usually mean by it, and how to correct the record using p=none or pct=0 correctly.
What does \"Crawled, currently not indexed\" mean?
Googlebot has visited the page but not added it to search. See what the status means, the likely reasons and what to improve before you wait.
What does \"Discovered, currently not indexed\" mean?
Google knows the page exists but has not crawled it yet. Learn why that happens and which site changes make a crawl more likely.
What does \"Sitemap could not be read\" mean?
Understand the Search Console status \"Sitemap could not be read\", the usual causes behind it and the checks that show which one applies to your file.
What does a correct DMARC record look like?
See copy-ready DMARC record examples for monitoring, gradual enforcement and full reject, with the syntax rules that make a record valid.
What does a noindex tag do?
A noindex tag asks search engines to leave a page out of results. See how to add it, how to confirm it works and the mistakes that break it.
What does pct= mean in a DMARC record (and what is pct=0)?
Learn how the DMARC pct= tag works, why it defaults to 100, what pct=0 asks receivers to do, and how to use it to roll out enforcement gradually.
What does rua= mean in a DMARC record?
Find out what the rua= tag does in a DMARC record, what an aggregate report contains, how to write the mailto: address and send reports elsewhere.
What does ruf= mean in a DMARC record?
Understand the ruf= tag in a DMARC record, how failure reports differ from rua summaries, the fo option, and why many receivers never send them.
What file size should website images be?
There is no official image file size limit. Get practical size ranges for hero, article and thumbnail images, plus the steps that shrink a heavy picture.
What is a 301 redirect?
A plain-English explanation of the 301 permanent redirect: what it does, when to use it, how to set one up and how to confirm it works.
What is a canonical tag?
A canonical tag tells search engines which URL is the main version of a page. See what it looks like, where it goes and how to avoid common errors.
What is a CDN and do I need one?
A CDN serves copies of your files from servers near visitors. Find out what it does, who benefits most and how to tell whether your site needs one.
What is a Content-Security-Policy header?
A Content-Security-Policy header tells browsers which sources a page may load code and files from. See the main directives and how to roll one out safely.
What is a redirect chain and why is it bad?
A redirect chain sends visitors through several redirects before the final page. See why it slows pages and wastes crawling, and how to flatten it.
What is a sitemap index file?
A sitemap index file points to several sitemaps so a large site stays within size limits. See the format, an example and how to submit it.
What is a soft 404?
A soft 404 is a page that looks missing or empty but returns a success code. Learn how to spot soft 404s and fix them with the right status code.
What is alt text and how do I write it?
Alt text is a short written description of an image for people who cannot see it. Learn what to write, when to leave it empty and how to check your images.
What is an SPF record?
Understand what an SPF record is, how receiving servers use it to check who may send mail for your domain, and how to read each part of one.