AI 技術性 SEO 稽核：找出並修正阻礙網站發展的所有 Issue

Content strategy, link building, and on-page optimization all depend on one prerequisite: that search engines can find, read, and correctly interpret every page on the site. A page that cannot be crawled cannot rank regardless of how good the content is. A page that is canonicalized to the wrong URL passes its ranking signals to a different page. A page with a redirect chain loses link equity at every hop. Technical SEO failures are invisible to everyone except people who know to look for them, and they compound silently. Every piece of content created on a crawl-restricted section is wasted. Every link built to a page with a broken canonical is misattributed.

A complete technical SEO audit covers crawlability and indexation (can search engines access pages, are they indexed, any robots.txt or noindex blocks), page speed and Core Web Vitals (LCP, INP, CLS ranking signals), site architecture and internal linking (URL structure, crawl depth, link distribution, orphaned pages), canonical tags and duplicate content (canonicalization errors, filtered URLs, pagination), redirect configuration (redirect chains, loops, broken redirects), structured data and schema markup (implementation validity, missing rich result opportunities), and mobile usability (viewport, tap targets, text legibility).

Core Web Vitals are three metrics that are direct ranking signals for Google: Largest Contentful Paint (LCP, loading performance), Interaction to Next Paint (INP, interactivity), and Cumulative Layout Shift (CLS, visual stability). Sites that fail Core Web Vitals thresholds are at a ranking disadvantage against comparable sites that pass them. The audit identifies specific elements causing failures — typically unoptimized images, render-blocking JavaScript, or layout instability from elements that load without reserved dimensions. Every month that passes with a Core Web Vitals failure is a month of ranking suppression that content investment cannot overcome.

Canonicalization errors are among the most common and most damaging technical SEO issues, particularly on e-commerce sites with filtered URLs, or any site with pagination, parameter-based URLs, or www/non-www inconsistencies. A misplaced canonical tag signals to Google that the wrong version of a page is the authoritative one, splitting ranking signals between URLs rather than consolidating them. This means every link built to a page with a broken canonical is misattributed — the ranking power goes to the wrong page. This is especially damaging on e-commerce sites with hundreds of product variations.

Run a technical SEO audit after any significant site change (platform migration, redesign, URL restructure, CMS change), after an unexplained traffic drop, before launching any significant content or link building program (because technical issues not resolved first will undermine everything built on top of them), and as a regular quarterly health check for any site where SEO is a primary traffic channel, because technical issues accumulate continuously with each site change. Quick wins can be fixed within 30 minutes each, then Critical findings, then High, then Medium severity issues.