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Notes on search, AI answers and the code behind them.
Practical guides on how search engines and AI assistants find, read and cite websites. Written by the Serpel team, with sources for every claim.
Featured · Technical SEO
JavaScript SEO: how Google crawls, renders and indexes JavaScript
JavaScript SEO explained: how Googlebot crawls, renders and indexes JS, which rendering strategy to choose and how to test what Google sees.
8 min read
Technical SEO
Bing Search Console: how to set up Bing Webmaster Tools
Bing Search Console is Bing Webmaster Tools. Set it up step by step: import from Google, verify, submit sitemaps, use IndexNow and read the reports.
10 min read
Technical SEO
Core Web Vitals test: how to measure and fix LCP, INP and CLS
Run a Core Web Vitals test with PageSpeed Insights, Search Console, Lighthouse, CrUX and Serpel, then fix LCP, INP and CLS with a table of causes.
8 min read
Technical SEO
SEO audit report example: Serpel’s own crawl of serpel.app
An SEO audit report example from Serpel’s own crawl of serpel.app: score, issues by severity, Core Web Vitals, fixes and a format you can copy.
15 min read
Technical SEO
Soft 404 errors: what they are and how to fix them
What is a soft 404? How Google defines it, what causes soft 404 errors, how Search Console reports them and how to fix each case, plus how to detect them.
8 min read