---
title: "Setting Performance Budgets — Lemwatch Help"
description: "Set thresholds and get alerted when metrics exceed your limits."
canonical: "https://lemwatch.com/help/performance-budgets"
source: "https://lemwatch.com"
---

# Setting Performance Budgets

> Set thresholds and get alerted when metrics exceed your limits.

## Setting Performance Budgets

### Pro Plan and Above

 Performance budgets define acceptable thresholds for key metrics. When a metric exceeds your budget, LemWatch alerts you immediately.

### How to Set Up

- Go to your site's Settings tab

- Click Performance Budgets

- Set thresholds for:

- LCP — e.g., max 2.5 seconds

- CLS — e.g., max 0.1

- INP — e.g., max 200ms

- Total page weight — e.g., max 2MB

- Response time — e.g., max 500ms

### When Budgets Are Exceeded

 You receive an alert via your configured channels with:

- Which metric exceeded the budget

- Current value vs. your threshold

- Whether it's a one-off spike or a sustained regression

- Link to the detailed check results

### Combining with Baselines

 Use [Baseline Comparisons](https://lemwatch.com/help/baselines) alongside budgets. Budgets set absolute limits, while baselines track relative changes from your known-good state.

### Best Practices

- Start with Google's recommended thresholds, then tighten as you optimise

- Set different budgets for different site types (marketing sites vs. web apps)

- Review and adjust budgets quarterly as your sites evolve


## Related

- [Help centre](https://lemwatch.com/help)
- [Core Web Vitals Explained](https://lemwatch.com/help/core-web-vitals)
- [Setting Up Alerts](https://lemwatch.com/help/alert-setup)
- [Baseline Comparisons](https://lemwatch.com/help/baselines)
- [How Health Scores Work](https://lemwatch.com/help/health-score-explained)
- [Lemwatch pricing](https://lemwatch.com/pricing)
- [Incident Playbooks](https://lemwatch.com/help/playbooks)
- [Can I send alerts for one site to a different email?](https://lemwatch.com/help/per-site-notifications)