4SEO is a modern integrated Joomla search engine optimization solution. It constantly analyzes your site for changes, identifies important pages, adds meta and structured data, optimizes for social sharing, and generates a sitemap. 4SEO also gives you tools for your daily SEO work: broken link list, custom error pages, redirects, content replacement, robots.txt

Info: https://weeblr.com/joomla-seo/4seo

Works like Google or Bing
Like a search engine system, 4SEO crawls your site in the background to understand it and collect information about each page.

It automatically detects multiple URLs for the same content, adds rel=canonical links, and makes sure no duplicates are listed in the sitemap. And it detects duplicate page title or description and a lot of other important SEO information.

Measuring Real Core Web Vitals
Core Web Vitals are new speed factors that Google uses when ranking pages. They are difficult to measure because Google uses real visitors to collect them.

4SEO provides you with real and accurate Core Web Vitals measured based on your real visitor experience. These are the same values ​​that Google uses, unlike all online speed testers. And 4SEO can show you exactly which pages didn't pass the speed test before Google did.

Quickly and easily on your server
4SEO is integrated: data is collected only once, in the background. When your page is displayed to visitors, it takes a minimum of work to get the best performance. With separate extensions, the same work has to be done multiple times, resulting in performance degradation.

4SEO replaces the metadata extension, sitemap extension, structured data extension, social media sharing extension, redirect extension, content placeholder extension (and more) with just one quick extension.

Admin Metadata...
Manage and create page title and meta description in one place.

4SEO showcases accurate, live simulation of Google search results for both mobile and desktop. Adding robot tags is done in one click.

... or on the front end
Restrict access to the interface only to authors or SEOs, and they can visually customize metadata and share images. They can perform Facebook and Twitter verification with one click.

Structured Data Generation (Rich Snippets)
Perhaps the most important SEO action you can take on your site in 2021?

4SEO automatically generates structured data for your content. Search engines will better understand your content. Featured snippets will bring more traffic.

Create simple rules for structured data types supported by Google. Rules are applied from one page to many URLs, components or categories. Built-in rules let you get started without configuration.

Social sharing tags Sharing
content on social networks only works when certain metadata is included: OpenGraph and TwitterCards. 4SEO generates them automatically.

But what really matters is including the right image. Posting without an image costs nothing, so 4SEO detects images in your content and chooses the best image. You can change this selection either in the admin panel or directly in the user interface.

XML sitemap generation
An XML sitemap is only meaningful for SEO if it does NOT contain all of the pages on your site.

4SEO automatically generates, updates, and submits to Google and Bing an SEO-optimized sitemap that includes canonical URLs and excludes duplicate or archived content. The robots meta tag and the robots.txt file are respected.

4SEO also automatically removes content older than the number of days you specify for the desired categories from your sitemap.

No plugin required, all sitemap creation is based on continuous full site analysis. Dedicated support for Hikashop, J2Store, Virtuemart, IgniteGallery or Phoca Gallery optimizes even more sitemap URLs or image selections.

Error detection
As you read your site's content, 4SEO detects broken links and tells you which pages they appear on so you can quickly fix them.

But it also logs PHP errors so that you are aware of possible errors that only your visitors may have seen so far. With an accurate error description, file name, and line number, developers can quickly fix the situation.