Before you update your old content, it is important to audit it to identify which pages are performing well and which ones need attention. You can use Google Analytics to measure traffic, conversions, bounce rate, dwell time, and other user behavior indicators. Google Search Console can analyze impressions, clicks, rankings, and keywords for each page. SEO tools such as Ahrefs, Moz, or Semrush can evaluate backlinks, domain authority, content quality, and competitors. Content audit tools such as Screaming Frog, ContentKing, or HubSpot can crawl your website and find errors, issues, or gaps in your content. Once you have the audit results you can categorize your old content into four groups: keep (performing well and no major changes needed), update (some potential but need improvements or modifications), consolidate (similar or overlapping pages that can be merged into one comprehensive page), and delete (outdated, irrelevant, or low-quality pages that should be removed or redirected).