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7/17/2026
How to Build Rich Link Previews Without Maintaining a Browser Instance

How to Build Rich Link Previews Without Maintaining a Browser Instance

Short summary

Self-hosting Puppeteer for link previews causes memory leaks, font issues, and scaling problems. The author switched to ScreenshotRun API for screenshot-based previews, falling back only when OG tags are missing. With Redis caching at 24-hour TTL, response times dropped to 5ms on cache hits and memory usage fell from 2GB to 150MB.

  • •Self-hosted Chromium for screenshots causes OOM crashes and scaling issues
  • •ScreenshotRun API replaces browser management with a single HTTP call
  • •OG tags parsed first, screenshots used as fallback with Redis caching

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