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SEO report: www.stackage.org scores 63/100

Fix these first

H1 headingcritical
No H1 heading.
Fix: Use one H1 that states the page topic with its main keyword.
See the details
Canonical URLhigh
No canonical tag.
Fix: Add <link rel="canonical" href="(this page's full URL)"> – only point it elsewhere for true duplicates.
Read the guide: duplicate content
See the details
Meta descriptionhigh
No meta description – Google will pick text from the page.
Fix: Write a 140–155 character description that answers the searcher's question and invites the click.
Write one free with the AI title & description writer
Read the guide: how to write meta descriptions
See the details
Topic focushigh
0 of 1 title keywords appear in the main content (missing: server).
Fix: Use your main title phrases naturally in the opening paragraph and headings.
Find the phrases people search with the free keyword generator
Read the guide: how to write SEO content
See the details
Entity clarityhigh
No Organization / LocalBusiness structured data – search engines and AI have to guess who runs this site.
Fix: Add Organization or LocalBusiness JSON-LD with name, url, logo, contact details and sameAs links to your official profiles.
Make the code with the free local business schema generator
Read the guide: schema markup
See the details
JSON-LD present & validhigh
No JSON-LD structured data.
Fix: Add JSON-LD describing the business and the page (Organization/LocalBusiness, WebSite, WebPage or Article, BreadcrumbList).
Make valid code with the free schema generator
Read the guide: schema markup
See the details
Title tagcritical
“Stackage Server”
Fix: Write a unique title of roughly 50–60 characters with the main search phrase first.
Preview and measure your title with the free title tag checker
Read the guide: how to write title tags
See the details
Open Graph & social cardsmedium
Open Graph title or image missing.
Fix: Add og:title, og:description, og:image (1200×630 PNG/JPG, absolute URL) and twitter:card=summary_large_image.
Make the tags with the free Open Graph generator
Read the guide: does social media help SEO?
See the details

Check the whole website

This report covers one page. The full-site audit crawls up to 250 pages to find broken links, duplicate titles, orphan pages and more.

Run a full-site audit

Monitor this site weekly

We'll re-check it every week and track the score, with a history graph and a list of anything that breaks.

Compare with competitors

See how this page scores against up to two competitors, side by side, and where they beat you.

Compare sites

Real-world speed Google PageSpeed

Loading Core Web Vitals from Google… this can take up to 30 seconds.

Authority & backlinks

Looking up which websites link to stackage.org…

Indexing & crawling 88%

Can search engines reach, read and index this page?

✓
Status codecritical
The page returned HTTP 200.
✓
Indexablecritical
No noindex instruction – the page can appear in search.
✓
robots.txthigh
robots.txt found.
Googlebot is allowed to crawl this page.
✓
XML sitemaphigh
Sitemap found at https://www.stackage.org/sitemap.xml with 8 URLs.
Declared in robots.txt.
This page is listed in it.
No lastmod dates – add accurate ones so search engines know what changed.
✗
Canonical URLhigh
No canonical tag.
Fix: Add <link rel="canonical" href="(this page's full URL)"> – only point it elsewhere for true duplicates.
Read the guide: duplicate content
✓
Redirectshigh
1 redirect before the page loaded.
https://stackage.org/ → https://www.stackage.org/
A single redirect to your preferred address is normal; just make sure your own links use the final address.
✓
www / non-wwwmedium
stackage.org redirects to www.stackage.org.

Content quality 47%

Is there enough clear, useful text that matches what the page targets?

✓
Word countmedium
538 words of main content (menus and footer excluded).
Google has no minimum word count – this is a rough guide to whether the page answers the question in full.
✓
Readabilitymedium
Flesch reading ease 82 (plain English), about 8 words per sentence.
✗
Topic focushigh
0 of 1 title keywords appear in the main content (missing: server).
Fix: Use your main title phrases naturally in the opening paragraph and headings.
Find the phrases people search with the free keyword generator
Read the guide: how to write SEO content
✗
H1 headingcritical
No H1 heading.
Fix: Use one H1 that states the page topic with its main keyword.
✓
Heading structuremedium
4 headings for 538 words.
Levels are in order.
✓
Text-to-code ratiolow
31% of the HTML is visible text.

AI search readiness 38%

Can ChatGPT, Claude, Perplexity and Google AI Overviews read, understand and cite this site?

✓
AI crawler accesshigh
Search and AI-search crawlers (Googlebot, Bingbot, OAI-SearchBot, Claude-SearchBot, PerplexityBot…) can read this page.
✓
Snippet controlshigh
No snippet restrictions – search and AI answers can quote this page.
✗
llms.txtlow
No /llms.txt file. It's an optional, emerging convention – few AI tools are confirmed to read it yet, so this is low priority.
Fix: Optionally add /llms.txt: a short Markdown summary of who you are with links to your key pages.
Make one with the free llms.txt generator
Read the guide: do you need llms.txt?
✗
Question-led contentmedium
No headings phrased as questions.
Fix: Add headings that match real questions ("How much does…?") followed by a direct one- or two-sentence answer – an easy format for search and AI answers to quote.
Read the guide: how to write SEO content
✗
Entity clarityhigh
No Organization / LocalBusiness structured data – search engines and AI have to guess who runs this site.
Fix: Add Organization or LocalBusiness JSON-LD with name, url, logo, contact details and sameAs links to your official profiles.
Make the code with the free local business schema generator
Read the guide: schema markup
✗
Freshness signalsmedium
No published/updated date found.
Fix: Show a 'last updated' date and add dateModified to your structured data.
✗
Trust pages (E-E-A-T)medium
Links found to about; missing contact and privacy.
Fix: Link to About, Contact and Privacy pages from every page – they help visitors, Google and AI tools see who stands behind the content.

Structured data 0%

Machine-readable facts for rich results and AI.

✗
JSON-LD present & validhigh
No JSON-LD structured data.
Fix: Add JSON-LD describing the business and the page (Organization/LocalBusiness, WebSite, WebPage or Article, BreadcrumbList).
Make valid code with the free schema generator
Read the guide: schema markup
i
Breadcrumbslow
Home page – breadcrumbs not needed.

Links 100%

Internal linking, anchor text and broken links.

✓
Internal linkinghigh
46 internal and 14 external links.
✓
Anchor text qualitymedium
No link text points to two different pages.
✓
Broken links (sample)high
Checked 12 internal link(s).
No broken links found.
3 link(s) point to a redirect – link to the final address instead.

Performance 82%

Speed signals from the HTML and server. Real-user Core Web Vitals load below.

✓
Server response (TTFB)high
101 ms until the first response from our checker, including connection setup (Google rates TTFB good under 0.8 s, poor over 1.8 s).
✓
HTML sizemedium
11 kB of HTML.
i
Compressionmedium
Couldn't be measured from our server (our fetch decodes compressed pages before we see them). Check in your browser's developer tools that HTML is sent with br or gzip.
!
Render-blocking resourceshigh
1 blocking script(s) and 2 stylesheet(s) in <head>.
Fix: Add defer to scripts, inline critical CSS and load the rest asynchronously.
Read the guide: Core Web Vitals
✓
Scripts & third partiesmedium
7 script tag(s); files loaded from 2 other domain(s): fonts.googleapis.com, googletagmanager.com.
!
Imagesmedium
2 image(s).
2 without width/height – can cause layout shift (CLS).
0 use WebP/AVIF or responsive srcset.
Fix: Give every image width and height, lazy-load images below the fold (but not the main image) and serve WebP/AVIF.
Read the guide: image SEO
✓
Cachinglow
Cache-Control: public, max-age=3600
✓
HTTP/3low
Server advertises HTTP/3 (faster on mobile networks).

Security 75%

Visitor safety signals that browsers and Google check.

✓
HTTPScritical
Secure HTTPS with no mixed content.
✓
HTTP → HTTPS redirecthigh
http:// redirects to https://.
✗
HSTSmedium
No Strict-Transport-Security header.
Fix: Add Strict-Transport-Security: max-age=63072000; includeSubDomains.
Read the guide: the technical SEO checklist
✗
Security headerslow
Present: none.
Fix: Add X-Content-Type-Options, Referrer-Policy, Permissions-Policy and X-Frame-Options (or a CSP).
Read the guide: the technical SEO checklist
✓
Server fingerprintlow
No X-Powered-By header (server: cloudflare).

Mobile & accessibility 58%

Usable on phones and by everyone – Google indexes the mobile version.

✓
Mobile viewportcritical
viewport: width=device-width,initial-scale=1
!
Image alt textmedium
2 of 2 images have no alt attribute.
Fix: Describe each meaningful image in its alt attribute (use alt="" for decorative ones).
Read the guide: image SEO
✗
Form labelsmedium
1 of 2 form field(s) have no label.
Fix: Give every form field a <label> or aria-label (a placeholder isn't a label).
✓
Link nameslow
Every link has a readable name.
✗
Tap-to-contactmedium
No tel: or mailto: links.
Fix: Add a tap-to-call or tap-to-email button so phone visitors can contact you instantly.
Read the guide: mobile-friendly websites

Local SEO not scored

This site doesn't look like a local business, so these checks are shown for information and not scored.

i
LocalBusiness markuphigh
No LocalBusiness structured data.
i
Contact details on pagemedium
No phone number found.
No postcode found (fine for service-area businesses).
i
Map & directionslow
No map or directions link.

This report checks one page. Scores are a guide, not a guarantee of rankings. Check another page · Print or save as PDF

SEO report for www.stackage.org

Fix these first

Real-world speed Google PageSpeed

Authority & backlinks

Indexing & crawling 88%

Status codecritical

Indexablecritical

robots.txthigh

XML sitemaphigh

Canonical URLhigh

Redirectshigh

www / non-wwwmedium

Search snippet & sharing 29%

Title tagcritical

Meta descriptionhigh

Open Graph & social cardsmedium

Faviconlow

Languagelow

Content quality 47%

Word countmedium

Readabilitymedium

Topic focushigh

H1 headingcritical

Heading structuremedium

Text-to-code ratiolow

AI search readiness 38%

AI crawler accesshigh

Snippet controlshigh

llms.txtlow

Question-led contentmedium

Entity clarityhigh

Freshness signalsmedium

Trust pages (E-E-A-T)medium

Structured data 0%

JSON-LD present & validhigh

Breadcrumbslow

Links 100%

Internal linkinghigh

Anchor text qualitymedium

Broken links (sample)high

Performance 82%

Server response (TTFB)high

HTML sizemedium

Compressionmedium

Render-blocking resourceshigh

Scripts & third partiesmedium

Imagesmedium

Cachinglow

HTTP/3low

Security 75%

HTTPScritical

HTTP → HTTPS redirecthigh

HSTSmedium

Security headerslow

Server fingerprintlow

Mobile & accessibility 58%

Mobile viewportcritical

Image alt textmedium

Form labelsmedium

Link nameslow

Tap-to-contactmedium

Local SEO not scored

LocalBusiness markuphigh

Contact details on pagemedium

Map & directionslow