Reference
Troubleshooting Vercel Speed Insights
Learn about common issues and how to troubleshoot Vercel Speed Insights.Table of Contents
Speed Insights is available on all plans
If you are experiencing a situation where data is not visible in the Speed Insights dashboard, it could be due to a couple of reasons.
How to fix:
- Double check if you followed the quickstart instructions correctly
- Check if your adblocker is interfering with the Speed Insights script. If so, consider disabling it
If /_vercel/speed-insights/script.js
is correctly loading but not sending any data (e.g. no vitals
request), ensure that you're checking for the request after navigating to a different page, or switching tabs. Speed Insights data is only sent on window blur or unload events.
Speed Insights may not function when using a proxy, such as Cloudflare.
How to fix:
- Check your proxy configuration to make sure that all desired pages are correctly proxied to the deployment
- Additionally, forward all requests to
/_vercel/speed-insights/*
to the deployments to ensure proper functioning of Speed Insights through the proxy
Last updated on November 14, 2024
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