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45 checks

Content

Titles, descriptions, headings and the substance of the page itself — what a searcher sees before they click, and what they find after.

High

Duplicate page titles

Write a unique title for each page that describes what only that page is about.

Id
DUPLICATE_TITLE
Fix estimate
4 min per page
High

Page answers 200 with nothing in it

Serve the page's content in the HTML, or answer 404 if there is none: an empty 200 is indexed as a page about nothing.

Id
EMPTY_PAGE
Fix estimate
15 min per page
High

Missing page title

Add a <title> tag of roughly 50–60 characters that says what the page is about.

Id
MISSING_TITLE
Fix estimate
4 min per page
High

Title arrives only after JavaScript runs

Send the title in the HTML the server returns; everything that reads the page before running scripts sees it without one.

Id
TITLE_ONLY_IN_RENDERED_HTML
Fix estimate
20 min per page
MediumNeeds GSC

Search clicks dropped vs the prior 30-day period

Id
CLICKS_DROP
Fix estimate
20 min per page
Medium

Duplicate meta descriptions

Give each page its own one- or two-sentence description of what is on it.

Id
DUPLICATE_META_DESCRIPTION
Fix estimate
4 min per page
MediumNeeds GSC

High impressions but low click-through rate

Rewrite the title and meta description to better match what searchers are looking for.

Id
HIGH_IMPRESSIONS_LOW_CTR
Fires at
≥ 100 impressions
Fix estimate
15 min per page
Medium

Title barely matches the page content

Rewrite the title so it reflects what the page actually says — a mismatched title costs clicks and rankings.

Id
IRRELEVANT_TITLE
Fires at
< 0.3 score
Fix estimate
8 min per page
Medium

Placeholder "lorem ipsum" text left on the page

Replace the placeholder text with real content — it is visible to visitors and search engines alike.

Id
LOREM_IPSUM_PLACEHOLDER
Fix estimate
15 min per page
Medium

Missing H1 heading

Add one H1 heading near the top of the page that matches its main topic.

Id
MISSING_H1
Fix estimate
5 min per page
Medium

Images missing alt text

Add a short alt attribute describing each image for screen readers and image search.

Id
MISSING_IMAGE_ALT
Fix estimate
2 min per page
Medium

Missing lang attribute

Declare the page language on the html element, for example lang="pl", so screen readers and search engines know how to read it.

Id
MISSING_LANG
Fix estimate
5 min per page
Medium

Missing meta description

Add a meta description of roughly 120–155 characters summarising the page.

Id
MISSING_META_DESCRIPTION
Fix estimate
4 min per page
MediumNeeds GSC

Clicks on a search query fell vs the prior 30-day period

Id
QUERY_CLICKS_DROP
Fix estimate
20 min per page
MediumNeeds GSC

A search query ranks for this page but almost nobody clicks

Id
QUERY_HIGH_IMPRESSIONS_LOW_CTR
Fires at
≥ 50 impressions
Fix estimate
15 min per page
MediumNeeds GSC

Average search position worsened vs the prior 30-day period

Id
RANKING_POSITION_WORSENED
Fires at
≥ 3 positions
Fix estimate
25 min per page
Medium

Structured data missing required properties

Id
STRUCTURED_DATA_INVALID
Fix estimate
10 min per page
Medium

Template image missing alt text

One image the theme prints on every page (a logo or icon) has no alt text — add it once in the template and every page is covered.

Id
TEMPLATE_IMAGE_MISSING_ALT
Fix estimate
5 min per page
Medium

Thin content

Expand the page with genuinely useful detail, or merge it into a stronger related page.

Id
THIN_CONTENT
Fires at
< 200 words
Fix estimate
30 min per page
Low

Duplicate H1 across pages

Id
DUPLICATE_H1
Fix estimate
5 min per page
Low

Duplicate image alt text

Id
DUPLICATE_IMAGE_ALT
Fix estimate
2 min per page
Low

Empty heading tags

Give every heading text, or use a styled div where the tag was only there for spacing.

Id
EMPTY_HEADING
Fix estimate
3 min per page
Low

Heading levels skip a rank

Move down one heading level at a time, so an H1 is followed by an H2 before any H3.

Id
HEADING_ORDER_SKIP
Fix estimate
5 min per page
Low

Share card is missing tags

Fill in the four tags a share card needs: title, description, image and url.

Id
INCOMPLETE_OPEN_GRAPH
Fix estimate
10 min per page
Low

Meta description barely matches the page content

Rewrite the description using the vocabulary of the page itself so Google keeps it instead of substituting its own.

Id
IRRELEVANT_META_DESCRIPTION
Fires at
< 0.2 score
Fix estimate
6 min per page
Low

Low text-to-HTML ratio

Id
LOW_TEXT_RATIO
Fires at
< 10 %
Fix estimate
20 min per page
Low

Meta description too long

Id
META_DESC_TOO_LONG
Fires at
> 160 characters
Fix estimate
3 min per page
Low

Meta description too short

Id
META_DESC_TOO_SHORT
Fires at
< 70 characters
Fix estimate
3 min per page
Low

Article has no author in its markup

Name the author in the article markup: an answer engine cites what it can attribute.

Id
MISSING_ARTICLE_AUTHOR
Fix estimate
10 min per page
Low

Article has no date in its markup

Add datePublished, and dateModified when it changes: undated advice is quoted less and trusted less.

Id
MISSING_ARTICLE_DATE
Fix estimate
10 min per page
Low

No BreadcrumbList markup

Emit BreadcrumbList JSON-LD on pages below the top level so search results show the path instead of a bare URL.

Id
MISSING_BREADCRUMB_MARKUP
Fix estimate
10 min per page
Low

Missing character-encoding declaration

Declare <meta charset="utf-8"> early in <head> so text renders correctly everywhere.

Id
MISSING_CHARSET
Fix estimate
3 min per page
Low

No favicon found

Add a favicon — Google shows it next to your result on mobile, and browsers show it on every tab.

Id
MISSING_FAVICON
Fix estimate
10 min per page
Low

No llms.txt

Add an llms.txt naming what the site is and where its canonical explanations live, the way robots.txt names the sitemap.

Id
MISSING_LLMS_TXT
Fix estimate
30 min per page
Low

Missing Open Graph tags

Id
MISSING_OPEN_GRAPH
Fix estimate
5 min per page
Low

Organization markup has no logo

Add a logo property to the Organization block, pointing at a square image of at least 112 px.

Id
MISSING_ORGANIZATION_LOGO
Fix estimate
10 min per page
Low

Site identity not marked up

Add an Organization or LocalBusiness block naming who the site belongs to, so search engines can tie the pages to one entity.

Id
MISSING_ORGANIZATION_MARKUP
Fix estimate
15 min per page
Low

Organization markup has no sameAs links

List the brand profiles you control in sameAs, so search engines can confirm the entity against sources they already trust.

Id
MISSING_SAMEAS_PROFILES
Fix estimate
10 min per page
Low

Missing structured data (JSON-LD)

Id
MISSING_STRUCTURED_DATA
Fix estimate
15 min per page
Low

Missing Twitter/X Card tags

Add twitter:card, twitter:title, twitter:description and twitter:image so links shared on X show a preview instead of a bare URL.

Id
MISSING_TWITTER_CARD
Fix estimate
5 min per page
Low

More than one H1

Keep a single H1 per page and demote the extra ones to H2 or H3.

Id
MULTIPLE_H1
Fix estimate
5 min per page
Low

Multiple meta descriptions

Id
MULTIPLE_META_DESCRIPTION
Fix estimate
4 min per page
Low

Multiple title tags

Id
MULTIPLE_TITLE
Fix estimate
4 min per page
Low

Title longer than recommended

Trim the title to roughly 60 characters so it is not cut off in search results.

Id
TITLE_TOO_LONG
Fires at
> 60 characters
Fix estimate
3 min per page
Low

Title shorter than recommended

Expand the title with a few descriptive words so searchers know what to expect.

Id
TITLE_TOO_SHORT
Fires at
< 30 characters
Fix estimate
3 min per page
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