sarcoma-p31.org

Title, description, canonical, social tags — what search engines read first.

• Meta descriptionhigh impactlow effort

  No meta description found

  The meta description is your ad copy in search results; without one, engines pull an arbitrary snippet from the page, which usually reads poorly and costs you clicks. Add <meta name="description" content="..."> with 70–160 characters that summarize the page and give a concrete reason to click — what the visitor gets plus a differentiator (free, instant, no signup). Write a unique description per page: one duplicated across the site is treated much like a missing one.

Headings, copy depth, images, structured data, internal linking.

• Image alt textmedium impactlow effort

  1 of 2 images have alt text

  Alt text is how search engines understand what an image shows — it feeds image-search rankings and is what screen readers announce to blind visitors. Add a short, specific alt attribute to every meaningful image, describing the content rather than listing keywords: alt="Golden retriever puppy playing in snow" beats alt="dog puppy pet animal". Give purely decorative images an empty alt="" instead of omitting the attribute, so assistive technology knows to skip them rather than reading out the filename.

• Structured data (JSON-LD)medium impactmedium effort

  No JSON-LD structured data blocks found

  Structured data makes your listing eligible for rich results — star ratings, FAQs, breadcrumbs, product prices — which occupy more space on the results page and draw more clicks than plain blue links. Add a <script type="application/ld+json"> block with a schema.org type that matches the page: Organization or WebSite for a homepage, Article for posts, Product for product pages. Only mark up content actually visible on the page — markup for invisible content violates Google's guidelines and can earn a manual action.

• Heading hierarchylow impactlow effort

  Heading level jumps from h1 ("SARCOMA P31") to h3 ("DEC 15th - 17th 2026 - HEIDELBERG, GERMANY")

  Headings form the page's outline; when levels jump (h2 straight to h4), search engines and screen readers get a broken table of contents and the relationship between sections turns ambiguous. Fix the jump by stepping down one level at a time — promote the deeper heading, or add the missing intermediate level. The usual cause is choosing heading tags for their default font size; set sizes in CSS instead and let the tags reflect actual document structure.

HTTPS, redirects, robots, sitemap, speed, crawlability.

• Short redirect chainmedium impactlow effort

  https://sarcoma-p31.org/ (301) → https://www.sarcoma-p31.org/

  Every redirect hop adds a round-trip before the visitor sees anything, each hop can leak a little link equity, and crawlers abandon long chains — which can leave the destination page undiscovered. Trace the chain above and point the first URL directly at the final destination in a single 301; commonly this means merging separate http-to-https and non-www-to-www rules into one combined redirect. Also update internal links to reference the final URL directly, so most visitors never enter the chain at all.

• Response compression enabledlow impactlow effort

  no content-encoding header

  This HTML is served uncompressed, so every visitor downloads far more bytes than necessary — text compresses extremely well, and the savings directly speed up first render on slow connections. Enable Brotli or gzip on your server or CDN: in nginx it's "gzip on;" (or the brotli module), in Apache it's mod_deflate via .htaccess, and on most CDNs it's a single toggle. Make sure compression covers all text types (HTML, CSS, JS, JSON, SVG), but skip already-compressed images — recompressing them wastes CPU for no gain.