FixWeb

// perf / spotlight

Performance and Delivery

Payload weight, JavaScript count, third-party load, and font pressure.

The hook

A page can pass a quick desktop smoke test and still lose users on mobile because the payload is too heavy or the page waits on too many vendors.

यह कैसे काम करता आहे

FixWeb reads browser resource timing after render and groups resources by initiator type, transfer size, and first-party vs third-party origin.

The blast radius

Heavy scripts and third-party tags commonly degrade LCP and INP, while excess fonts and images add bandwidth and layout work.

// fixweb कशी चाचणी करते

FixWeb कशी चाचणी करते

The rendered crawl records approximate transfer bytes plus script, stylesheet, image, font, and third-party counts for each page.

Ironclad defenses

Set performance budgets, remove unused vendors, split and defer JavaScript, compress assets, cache immutable files, and optimize the likely LCP image.

// run it on your own app

Keep shipping while FixWeb keeps watch.

FixWeb pressure-tests the public surface of your app the way an attacker would — no agent, no install, no card. We keep researching new vulnerability patterns and turn them into practical checks and paste-ready fixes for Cursor, Claude, and Copilot.

Performance delivery
8
tests fired in this category
modules
1
dedicated performance delivery checks
every scan
98+
tests across all categories
  • Free — no credit card, no install, no Slack ping
  • Just paste a URL — we crawl, probe, and report
  • Severity-graded findings, deduped to signal only
  • Current, AI-ready fix prompts you can paste into Cursor, Claude, Copilot
Run a free scan

// latest checks · practical fixes · ship with confidence

Performance and Delivery — Vulnerability Spotlight | FixWeb · FixWeb