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+---
+title: Sitemap - replace the browser XSLT view before Chromium drops XSLT
+date: 2026-10-19
+priority: normal
+area: sm-sitemap-plugin
+g15office: w8kupqi3
+---
+
+Chromium now warns on `/sitemap.xml` (seen on UAT during the Phase 17 UAT, test 7): "This site uses XSLT; that functionality is being removed from this browser very soon…". The sitemap plugin serves the PHP plugin's `<?xml-stylesheet type="text/xsl" href=".../sitemap.xsl"?>` and `/sitemap.xsl` to show a readable table in the browser.
+
+Crawlers read the XML and are unaffected; only the in-browser view breaks.
+
+Options:
+
+- Drop the stylesheet processing instruction and `/sitemap.xsl`. This breaks byte parity with the PHP golden, so the parity tests change too.
+- Keep the XML for crawlers and serve an HTML view elsewhere (for example `/sitemap.html`, or in the admin).
+- A JS-based XSLT polyfill on the XSL page.
+
+Decide, then update the plugin, its goldens and README.