During the post-migration phase of updating our JavaScript library, we noticed random 404 errors in our SEO tools and Google Search Console. The strange part? The affected pages weren’t consistent, ...

Common causes JavaScript Errors Let’s start with a disclaimer here. Most JavaScript errors you encounter don’t matter for SEO. So if you go on the hunt for errors, take a long list to your dev, and ...

Check rendered HTML instead of source code when diagnosing Google indexing issues. Fix JavaScript error pages that return 200 status codes instead of proper 404s ...

Learn how a single JavaScript Date() timezone mistake silently corrupts web apps and how to fix timestamp bugs in JS, Python, cron jobs, MySQL, and React SSR.