Dynamic Title Set by JavaScript Not Indexed by Google
Your SPA updates `document.title` after the first render, but Googlebot indexes the original placeholder. The SERP shows "Loading..." or your home title on every URL.
🏷️ SEO Metadata & Structured Data Issues
Title / meta rewritten by Google, canonical & hreflang, accidental noindex, Breadcrumb / FAQ / WebSite JSON-LD, OG image, date mismatches.
Metadata issues are the worst kind — silent until GSC throws a warning or Google rewrites your title. This hub focuses on metadata & structured data: rewritten titles, replaced descriptions, missing OG image, structured-data warnings, canonical conflicts, hreflang warnings, broken Twitter Cards, JSON-LD errors, accidental noindex, Breadcrumb / FAQ / WebSite schema, Article vs JSON-LD date mismatch. Every article separates "real problem" from "Google`s normal rewriting" and ships Rich Results Test / URL Inspection walkthroughs.
Common problems
- Google rewrites my page title ≤60 chars, match intent, align with H1.
- Google rewrites my meta description Per-query snippets often don`t need a fix.
- Canonical URL is wrong Self-canonical is the safe default.
- Canonical mismatch on bilingual site Each language version must be self-canonical.
- Hreflang warning in multilingual sites Bi-directional + valid language codes.
- Robots meta conflicts with sitemap noindex pages should not be in sitemap.
- Noindex accidentally applied to public pages Template default noindex never flipped off.
- Duplicate without user-selected canonical Your canonical signal was too weak.
- Alternate page with proper canonical Usually not a fix-it, but verify direction.
- Structured data warning on article pages JSON-LD fields / types must match schema.org.
- Breadcrumb JSON-LD mismatch JSON-LD path differs from visible breadcrumbs.
- FAQ schema missing or invalid FAQ must be visible + 1:1 Q/A.
- WebSite JSON-LD inconsistency Name / search URL / language don`t line up.
- Social OG image missing Absolute URL + 1200×630 + flush debugger cache.
- Canonical still points to old domain After domain change, template still uses old URL.
- Meta description duplicated across many pages Template applied without variable substitution.
- Article date vs JSON-LD date mismatch datePublished / dateModified must be real.
- Pagination canonical configuration confusion Self-canonical per page; rel=next/prev deprecated.
- Last-Modified response header missing curl -I after deploy; don't let CDN strip the header.
In-depth articles in this hub
HowTo Schema Deprecated But Template Still Emits It
Google deprecated HowTo rich results in 2023, yet your template still injects HowTo JSON-LD on every page. Rich Results Test passes, but the rich result never returns — and the markup may now be a liability.
Product Schema Review Count Does Not Match Visible Reviews
JSON-LD reports 1,247 reviews and a 4.8 star rating, but the page only shows 32. Google flags it as a content mismatch and your star rating disappears from SERPs.
Article Schema Missing Required Field author.name
Search Console warns "Missing field author.name" on hundreds of Article pages. The byline string is set, but the JSON-LD shape is wrong — and the rich result quietly disappeared.
Sitemap lastmod Is Always Today and Google Stopped Trusting It
Every URL in your sitemap reports today's `lastmod`. Googlebot crawl rate falls instead of rising, because Google now ignores the field as unreliable.
Title Tag and H1 Mismatch Causes Google Rewrites
The `<title>` and `<h1>` say different things, so Google picks neither — and rewrites your SERP title to a chopped fragment from body copy.
Canonical Was Changed But Google Still Shows the Old URL
You set canonical to a new URL. Weeks later, Google still ranks the old URL. Why canonical is a hint, not a command, and what actually changes the chosen canonical.
Hreflang x-default Confusion in Bilingual Sites
You set hreflang for en and zh, but Search Console flags missing x-default. What x-default actually does and when you need it.
Meta Robots vs X-Robots-Tag — Which One Wins
When `<meta name="robots">` and `X-Robots-Tag` HTTP header conflict, results are unpredictable. How to decide which to use and how to keep them in sync.
I Set Noindex But the Page Is Still in Search Results
You added `<meta name="robots" content="noindex">` weeks ago but the page is still in Google. The most common reasons.
Structured Data Became Invalid After a Template Change
A template refactor or framework upgrade broke JSON-LD blocks site-wide. How to detect and fix.
Twitter Card Image Not Showing When Sharing
Sharing your URL on X/Twitter shows no image, even though og:image is set. Why Twitter cards have their own rules.
VideoObject Schema Not Recognized in Search Console
You added VideoObject JSON-LD for embedded videos but no video rich result, no video tab listing. Why.