aiqindaohs.cc

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

Everything we check in this category passed.

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

• Hreflang annotationslow impactlow effort

  Invalid hreflang value(s): "zh-Hans"

  Search engines silently skip hreflang entries with malformed codes, so users in those locales may be served the wrong language version — and no error report will ever tell you. Use an ISO 639-1 language code, optionally followed by an ISO 3166-1 region: "en", "en-US", "pt-BR", plus "x-default" for the fallback. Watch for the classic mistakes: "en-UK" should be "en-GB", and underscores like "en_US" are invalid — hreflang requires hyphens.

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

• Fast time to first bytehigh impactmedium effort

  3848 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.

• HTTP redirects to HTTPSmedium impactlow effort

  http:// version serves content without redirecting

  Your http:// URLs serve content instead of redirecting, so search engines can crawl and index two parallel copies of every page and split ranking signals between them. Add a permanent 301 redirect from http to https at the server or CDN level — in nginx, "return 301 https://$host$request_uri;" in the port-80 server block; in Apache, a RewriteRule in .htaccess; on Cloudflare, enable "Always Use HTTPS". Use a 301, not a 302 — temporary redirects don't consolidate ranking signals — and preserve the full path in the redirect target.

• 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.