---
title: "Image transfer exceeds the budget (perf/image-budget)"
description: "perf/image-budget: Heavy images dominate page weight on content pages and slow LCP on constrained networks."
canonical: https://void-design.vercel.app/rules/perf/image-budget
lastModified: 2026-09-16
---

# Image transfer exceeds the budget

`perf/image-budget` · severity **warn** · category Performance · detected by `void perf` and `void audit`

## Why it matters

Heavy images dominate page weight on content pages and slow LCP on constrained networks.

## How to fix it

Serve AVIF/WebP, size images to their rendered width with srcset + sizes, and lazy-load images below the fold.

## More performance rules

`void perf` reports 25 rules in this category. Core Web Vitals and bytes: LCP, CLS, TBT, TTFB, JavaScript, CSS, fonts, images, caching and compression, measured as the median of several runs on a throttled mobile and a desktop profile.

- `js-budget` First-load JavaScript exceeds the budget — [perf/js-budget](https://void-design.vercel.app/rules/perf/js-budget)
- `css-budget` CSS transfer exceeds the budget — [perf/css-budget](https://void-design.vercel.app/rules/perf/css-budget)
- `font-budget` Web font transfer exceeds the budget — [perf/font-budget](https://void-design.vercel.app/rules/perf/font-budget)
- `too-many-fonts` Too many font files are downloaded — [perf/too-many-fonts](https://void-design.vercel.app/rules/perf/too-many-fonts)
- `too-many-requests` Page makes many requests — [perf/too-many-requests](https://void-design.vercel.app/rules/perf/too-many-requests)
- `lcp-image-lazy` LCP image is lazy-loaded — [perf/lcp-image-lazy](https://void-design.vercel.app/rules/perf/lcp-image-lazy)
- `lcp-image-no-priority` LCP image has no fetchpriority="high" — [perf/lcp-image-no-priority](https://void-design.vercel.app/rules/perf/lcp-image-no-priority)
- `lcp-background-image` LCP element is a CSS background image — [perf/lcp-background-image](https://void-design.vercel.app/rules/perf/lcp-background-image)

Detected by `void perf` and `void audit`. Explain it in a terminal: `void rules perf/image-budget`