Dynamic Title Set by JavaScript Not Indexed by Google
Your SPA sets `document.title` after render, but Google indexes the placeholder. Every SERP result shows "Loading..." or your home title. Here is the fix.
🏷️ 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 Is Deprecated But Your Template Still Emits It
Google retired HowTo rich results in 2023. The Schema Markup Validator still passes your HowTo JSON-LD, so it looks fine — but Google's Rich Results Test no longer detects it and the result never returns. Here's how to confirm and clean it up.
Product Schema Review Count Does Not Match Visible Reviews
JSON-LD asserts 1,247 reviews at 4.8 stars but the page only shows 32. Google logs a review mismatch and your star chip drops from SERPs. Fix: make reviewCount equal the visible count, from the same source.
Fix Article Schema Missing Field author.name in Search Console
Search Console warns "Missing field author.name" on Article pages. The byline string is set, but the JSON-LD shape is wrong. Here is the exact fix, the minimum valid shape, and how to verify it.
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
Your `<title>` and `<h1>` say different things, so Google trusts neither and rewrites your SERP title. Align them and re-request indexing to get your title back.
Canonical Changed But Google Still Shows the Old URL
You set canonical to a new URL, but weeks later Google still ranks the old one. Canonical is a hint, not a command — here's how to align every signal so Google switches.
Hreflang x-default Confusion in Bilingual Sites
Set hreflang for en and zh but a validator flags missing x-default? What x-default does, the 6 configs that break it, and copy-ready fixes.
Meta Robots vs X-Robots-Tag — Which One Wins
When `<meta name="robots">` and the `X-Robots-Tag` HTTP header conflict, Google merges them and takes the most restrictive value. How to diagnose it with curl and keep both 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 six reasons, in hit-rate order, with the curl checks to tell them apart.
Structured Data Invalid After a Template Change: Find the One Broken Field
A layout refactor or framework upgrade broke your JSON-LD site-wide. Map the Rich Results Test error to its cause and fix the single field that regressed.
Twitter Card Image Not Showing When Sharing on X
Your X/Twitter link shows no image even though og:image is set. The 6 real causes, how to tell which one you have, and the fastest fix for each.
VideoObject Schema Valid but No Video Rich Result
Your VideoObject JSON-LD passes Rich Results Test but Search Console shows no indexed video. The real cause is usually thumbnail, embed URL, or video prominence — here is how to find which.