A Google preview you can trust
Google cuts titles and descriptions by width in pixels, not characters. Core SEO measures every letter in Google’s own font and cuts the preview exactly where Google does — on desktop and mobile.
Core SEO · WordPress plugin
SEO that shows exactly what Google shows.
Core SEO measures every title and description the way Google cuts them, checks your writing in nine languages and takes care of schema, sitemaps and analytics — free. Core SEO Premium adds an AI assistant that finds what to fix and writes it for you.
- Free version complete on its own
- Works with WooCommerce
- GPL, 9 languages
- Yoast import
- Consent Mode v2
Xoliushttps://xolius.com › product › core-seo
Core SEO Premium — SEO with an AI assistant built in
Core SEO measures titles and descriptions the way Google cuts them, checks your content in nine languages and fixes what matters most first …
Title548 / 600 px
Description884 / 920 px
SEO score 92
Readability good
Keyphrase: wordpress seo plugin
Works with the tools you already use
9
Languages for the content checks
1 click
To switch from Yoast or Rank Math
$0
For the complete free version
Core SEO · free
Everything a site needs. Free.
Not a teaser: the free plugin is complete, with nothing locked or limited.
Checks that tell you what to do
One SEO score and one readability score, each with a short list of fixes — most important first. The checks understand nine languages, word forms included.
Schema, done for you
One connected schema.org graph: organisation, website, page, article and breadcrumbs, so search engines and AI answers understand who you are.
Clean sitemaps
XML sitemaps without hidden pages, with last-modified dates. Old Yoast and Rank Math sitemap addresses keep working.
Switch in one click
Import titles, descriptions, keyphrases and settings from Yoast SEO or Rank Math. The other plugin stays untouched until you are sure.
Analytics with consent
Google Analytics 4 and Tag Manager with Consent Mode v2: paste your ID, and nothing is stored until your visitors agree.
Core SEO Premium
Let the AI do the work. You decide.
Premium finds what holds your site back, prepares the fix and waits for your OK. Nothing changes without you.
One score. One list. Most important first.
The dashboard gives your whole site one health score with its trend, and a to-do list ranked by what helps most. Fix buttons prepare the change for you to review.
An SEO assistant on every screen
Ask in plain words. The assistant looks at your real pages and proposes changes as a clear before and after — you apply them, or undo them, with one click.
Your own AI key. You pay only for what you use.The AI runs on your own Anthropic API key: no subscription and no markup from us, usually a few cents per page. You stay in control of the costs and your data.
A hundred descriptions before lunch
Titles, descriptions, social texts, image alt texts and FAQs — for one page or a hundred. You see every suggestion before anything is saved.
A site crawl, built in
Core SEO Premium visits every page like a search engine: broken links, redirect chains, missing titles, duplicates and slow pages, with a CSV export.
Redirects & 404 log
Automatic redirects when an address changes, and a log of missing pages with a suggested target.
Internal links
Link suggestions while you write, and the pages no other page links to yet.
Content screen
Every page as Google shows it, with filters for missing descriptions, duplicate titles and thin text.
WooCommerce
Product data for Google Shopping and rich results: price, stock, brand and reviews.
Local business
Address, opening hours and map position for local search and Google Maps.
News & IndexNow
A Google News sitemap, and new pages announced to Bing and others the moment you publish.
Cornerstone & FAQ blocks
Mark your key pages, and add FAQ and How-to blocks with rich-result data.
llms.txt for AI search
A map of your site for ChatGPT, Claude and other AI search, kept up to date.
Compare
Free or Premium?
| What you get | Core SEOFree | Premium$79 / year |
|---|---|---|
| Google preview with pixel widths | ✓ | ✓ |
| SEO and readability checks in nine languages | ✓ | ✓ |
| Schema, sitemaps, robots and canonicals | ✓ | ✓ |
| Import from Yoast SEO and Rank Math | ✓ | ✓ |
| Google Analytics & Tag Manager with Consent Mode | ✓ | ✓ |
| Health score and ranked to-do list | — | ✓ |
| SEO assistant and AI writer | — | ✓ |
| Content screen with bulk editing | — | ✓ |
| Site crawl | — | ✓ |
| Redirects and 404 log | — | ✓ |
| Internal link suggestions | — | ✓ |
| WooCommerce, local business and news SEO | — | ✓ |
| Updates and support from the studio | — | ✓ |
Coming from Yoast or Rank Math?
Switching takes a few minutes, and nothing is lost on the way.
- Switch in one clickTitles, descriptions, keyphrases and settings come with you. Premium brings your redirects too.
- Old sitemaps keep workingThe sitemap addresses Google already knows lead to the new sitemaps.
- Your old plugin stays untouchedCheck a few pages first, and only then deactivate it.
- One price, no add-onsWooCommerce, local business and news SEO are all part of Premium.
Pricing
Start free. Upgrade when it pays off.
Core SEO
$0free forever
The Google preview, content checks, schema, sitemaps, analytics and the import from Yoast and Rank Math.
Download freeMost chosen
Core SEO Premium
$79per year, 1 site
Everything in Core SEO, plus the SEO assistant, AI writer, site crawl, redirects, internal links, WooCommerce, local and news SEO. Updates and support for a year.
Get Premium — $79 / yearFull access
$199per year, 1 site
Core SEO Premium plus every theme and plugin we make — the News. theme, every JobCore add-on and everything new.
Compare all plansFAQ
Questions, answered
Do I need the free Core SEO plugin?
Yes — Premium adds to it. Both are in your account under Downloads: install Core SEO first, then Premium. All your settings stay.
Do I need an AI subscription?
The AI features use your own Anthropic API key, so you only pay Anthropic for what you use — usually a few cents per page. Everything else works without a key.
Can I switch from Yoast SEO or Rank Math?
Yes. Core SEO imports their settings, titles, descriptions and keyphrases, and Premium imports redirects from Yoast SEO Premium, Rank Math and Redirection. Old sitemap addresses redirect automatically.
What happens when my licence ends?
Everything keeps working. Renewing brings new versions and support again.
On how many sites can I use it?
On one live site per licence. Local and staging copies are free.
Which languages does it speak?
The plugin is translated into German, Dutch, French, Italian, Spanish, Portuguese, Arabic, Bosnian and Croatian, and its content checks understand those languages.
Changelog
-
Scores that keep themselves up to date
- A daily or weekly check in the background
- A new check when templates change
- Clearer licence options
-
Easier to find your way
- Live search in the Content screen
- Edit SEO links in the post lists
- Every section in the WordPress menu
- The SEO assistant on your pages
- SEO scores that update themselves
- Variables in Quick edit
-
First release
- SEO assistant
- AI writer
- Health score and to-do list
- Content screen with bulk editing
- Site crawl
- Redirects and 404 log
- Internal links
- WooCommerce
- Local business
- News SEO
- IndexNow
- llms.txt
See what Google sees.Fix what matters.
Install Core SEO for free today,
and add Premium when you want the AI to do the work.