Oh Dear

Changelog for June 12th, 2026

New website down checker, full-range port scanning, custom origin certs, and major reliability improvements.

New #

  • Added full-range port scanning support using Masscan, with Nmap used to identify services running on open ports.
  • Added a free public Website Down Checker tool.
  • Added blog search, powered by local content rather than external crawling.
  • Added social sharing to public uptime checker results.
  • Added support for custom origin certificates on status pages.
  • Added a live system status indicator to the marketing site footer.
  • Added FAQ sections to feature pages.
  • Added a downtime minutes column to daily uptime CSV exports.

Improvements #

  • Redesigned the website footer with improved navigation, use-case links, and social media visibility.
  • Improved mobile performance for blog posts by reducing Largest Contentful Paint (LCP).
  • Added a Markdown version of marketing pages for LLM and SEO crawlers.
  • Redesigned snooze confirmation screens.
  • Uptime percentages are now displayed with three decimal places for greater precision.
  • Made warning and destructive monitor actions more deliberate and visually consistent.

Fixes #

  • Fixed AI checks using the latest model strategy failing to dispatch.
  • Fixed background globe flickering in Chromium browsers on the Website Down Checker page.
  • Fixed the "Show more" functionality on the Who Uses Oh Dear page.
  • Fixed hero mockups overlapping section numbers on use-case pages.
  • Fixed a server error when syncing cron checks without a configured server timezone.
  • Fixed a server error caused by custom origin certificates expiring beyond 2038.
  • Fixed downtime tooltips on the uptime overview card and improved contrast on the "Past 12 Months" tab.
  • Fixed an issue where crawler, Lighthouse, and Sitemap checks could miss their daily runs.

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