SEO report for scielo.org.za

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 scielo.org.za…

Indexing & crawling 67%

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

  No XML sitemap found at /sitemap.xml or in robots.txt.

  Fix: Create an XML sitemap listing every page and submit it in Google Search Console.

  Make one with the free XML sitemap generator

  Read the guide: XML sitemaps

• ✗

  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

  Loads directly with no redirects.

• ✗

  www / non-wwwmedium

  Both www.scielo.org.za and scielo.org.za load without redirecting – Google may see duplicate sites.

  Fix: Pick one version (with or without www) and 301-redirect the other to it.

Search snippet & sharing 42%

How the page looks in Google results and when shared.

• ✓

  Title tagcritical

  “SciELO - Scientific Electronic Library Online”

  About 389px of Google's ~580px desktop width.

• ✗

  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

• ✗

  Open Graph & social cardsmedium

  Open Graph title or image missing.

  No twitter:card tag.

  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?

• ✗

  Faviconlow

  No favicon linked.

  Fix: Add a square favicon at least 48×48px.

• ✗

  Languagelow

  No lang attribute on <html>.

  Fix: Add lang="en-GB" (or your language) to the <html> tag.

Content quality 47%

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

• ✓

  Word countmedium

  524 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 27 (difficult), about 21 words per sentence.

  Fix: Use shorter sentences and everyday words – aim for a score of 50+ for customer-facing pages.

  Read the guide: how to write SEO content

• ✓

  Topic focushigh

  4 of 4 title keywords appear in the main content.

• ✗

  H1 headingcritical

  No H1 heading.

  Fix: Use one H1 that states the page topic with its main keyword.

• !

  Heading structuremedium

  0 headings for 524 words.

  Levels are in order.

  Fix: Use H2s for main sections and H3s inside them, without skipping levels.

  Read the guide: the on-page SEO checklist

• ✓

  Text-to-code ratiolow

  39% 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

  No links found to about, contact or privacy pages.

  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 50%

Internal linking, anchor text and broken links.

• ✓

  Internal linkinghigh

  10 internal and 11 external links.

• !

  Anchor text qualitymedium

  Same text used for different pages: “search form”.

  Fix: Make every link text describe its destination, e.g. “logo design prices” instead of “click here”.

  Check every link's wording with the free anchor text checker

  Read the guide: internal linking

• ✗

  Broken links (sample)high

  Checked 10 internal link(s).

  Broken: /avaliacao/avaliacao_en.htm (521), /scielo.php?script=sci_home&lng=pt&nrm=iso (521), /scielo.php?script=sci_home&lng=es&nrm=iso (521), /equipe/equipe_i.htm (521), /scielo.php?script=sci_alphabetic&lng=en&nrm=iso (521).

  Fix: Fix or remove links that return errors, and update links that redirect.

• !

  Internal links to http://medium

  10 internal link(s) use http:// – each one goes through a redirect.

  Fix: Update internal links to use https:// (or relative links).

Performance 73%

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

• !

  Server response (TTFB)high

  1446 ms until the first response from our checker, including connection setup (Google rates TTFB good under 0.8 s, poor over 1.8 s).

  Fix: Use page caching or a CDN (e.g. Cloudflare) so HTML is served from the edge.

• ✓

  HTML sizemedium

  9 kB of HTML.

• ✓

  Compressionmedium

  Compressed with gzip.

• ✓

  Render-blocking resourceshigh

  0 blocking script(s) and 1 stylesheet(s) in <head>.

• ✓

  Scripts & third partiesmedium

  2 script tag(s); files loaded from 2 other domain(s): scielo-log.scielo.br, googletagmanager.com.

• ✗

  Imagesmedium

  4 image(s).

  3 without width/height – can cause layout shift (CLS).

  1 image(s) after the first three aren't lazy-loaded.

  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: no-store, no-cache, must-revalidate, post-check=0, pre-check=0

  Fix: Set Cache-Control so browsers and CDNs can reuse the page.

• i

  HTTP/3low

  Couldn't be confirmed from our server – the alt-svc header that advertises HTTP/3 isn't always visible to it. Your site is on Cloudflare, which offers HTTP/3 under Network settings.

Security 21%

Visitor safety signals that browsers and Google check.

• !

  HTTPScritical

  1 file(s) load over insecure http:// (mixed content) – browsers may block them.

  Fix: Serve everything over HTTPS and update http:// file links.

  Read the guide: fixing a "Not secure" warning

• ✗

  HTTP → HTTPS redirecthigh

  http:// does not redirect to https://.

  Fix: 301-redirect all http:// requests to https://.

  Read the guide: fixing a "Not secure" warning

• ✗

  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

  X-Powered-By reveals “PHP/5.2.17”.

  Fix: Remove X-Powered-By so attackers can't see your software versions.

Mobile & accessibility 30%

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

• ✗

  Mobile viewportcritical

  No viewport meta tag – the page won't fit phones.

  Fix: Use <meta name="viewport" content="width=device-width, initial-scale=1"> and allow zoom.

  Read the guide: mobile-friendly websites

• ✗

  Image alt textmedium

  3 of 4 images have no alt attribute.

  Fix: Describe each meaningful image in its alt attribute (use alt="" for decorative ones).

  Read the guide: image SEO

• ✓

  Link nameslow

  Every link has a readable name.

• ✓

  Tap-to-contactmedium

  One-tap contact: email.

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.

• ✓

  Contact details on pagemedium

  No phone number found.

  No postcode found (fine for service-area businesses).

  An email link is shown.

• i

  Map & directionslow

  No map or directions link.