akifujimoto.online

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

• Twitter card taglow impactlow effort

  No twitter:card meta tag found

  X (Twitter) layers its own card markup on top of Open Graph, and without a twitter:card tag your shared links may render as plain text instead of a large image preview. Add <meta name="twitter:card" content="summary_large_image"> alongside your Open Graph tags; X will fill in the title, description, and picture from og:title, og:description, and og:image. Keep og:image an absolute URL — a relative or missing image is the usual reason cards show up without a picture.

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

Everything we check in this category passed.

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

• Fast time to first bytehigh impactmedium effort

  838 ms

  Time to first byte is the floor under every other speed metric — the browser can't parse, render, or fetch anything until the first byte arrives, so a slow TTFB drags down all Core Web Vitals and tests crawlers' patience. Add caching in front of the origin: full-page caching at a CDN (Cloudflare, Fastly) helps most, followed by server-side caches (Redis, object caching) and indexes on slow database queries. Measure from locations near your actual users — tuning only your fastest region leaves distant visitors just as slow.

• XML sitemap availablemedium impactlow effort

  no sitemap.xml found

  Without an XML sitemap, search engines discover pages only by following links, so new, deep, or weakly linked pages get found slowly or not at all. Generate one at /sitemap.xml — most frameworks and CMSs have a generator built in or as a plugin — listing every canonical, indexable URL, then add "Sitemap: https://www.example.com/sitemap.xml" to robots.txt and submit it in Google Search Console. Keep it clean: listing redirected, noindexed, or 404 URLs erodes crawler trust in the whole file.

• 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.

• Missing pages return 404low impactlow effort

  missing paths return a non-404 status (soft 404)

  URLs that don't exist on your site return a success status instead of 404 — search engines call these soft 404s, keep recrawling them, and may index the useless placeholder pages, wasting crawl budget that should go to real content. Configure your server or framework to return an actual 404 status (or 410 for permanently removed content) along with your error page. The classic mistake is serving a friendly "page not found" template with a 200 status — crawlers ignore the visible message; only the status code counts.