Perf Quick Audit

Web Page performance audit overlay: preload/lazyload/font hints + INP monitor.

As of June 2026, Perf Quick Audit has 207 users and a 5.00/5 rating from 1 reviews in the Developer Tools category.

Developer Tools

Chrome Web Store ↗.crx

Users+4.5%

207

Rating0%

5.00

1 reviews

Reviews0%

Version

1.0.4

Manifest V3

History

9 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	198	5.00	1	1.0.4
Apr 16, 2026	197	5.00	1	1.0.4
Apr 22, 2026	200	5.00	1	1.0.4
Apr 27, 2026	199	5.00	1	1.0.4
May 4, 2026	200	5.00	1	1.0.4
May 11, 2026	202	5.00	1	1.0.4
May 20, 2026	201	5.00	1	1.0.4
May 30, 2026	205	5.00	1	1.0.4
Jun 7, 2026	203	5.00	1	1.0.4
Now	207	5.00	1	1.0.4

Permissions & access

Permissions: activeTabscripting
Host access: None declared

Screenshots

About

Perf Quick Audit — Web Performance Checks (Instant Overlay)

Perf Quick Audit is a lightweight Chrome extension that runs a fast, practical performance audit on any page you open. Click the extension, and it shows an on-page overlay with clear ✅ / ❌ checks so you can spot common speed issues in seconds.

It’s built for SEOs, developers, and site owners who want quick answers while reviewing real pages

What it checks
1) Above-the-fold image checks

Hero image preload detection (supports common preload patterns)

Hero image fetchpriority="high" check

Logo checks

Detects logo element in the header area

Checks logo fetchpriority

If logo is SVG, it highlights it with 😍 (SVG is typically smaller and stays sharp)

2) Below-the-fold lazy loading checks (smart rules)

Finds clearly below-fold images and checks if they use loading="lazy"

Avoids false flags for images that are still partially visible

Does not flag SVG images for lazy loading (lazy-loading SVG usually has limited benefit)

3) Preload checks for key assets

Font preload checks (link[rel="preload"][as="font"])

Flags common issues like missing crossorigin on cross-origin font preloads

CSS preload checks (as="style")

Highlights whether high priority loading hints are present

JS preload checks

Includes both preload and modulepreload

Highlights whether high priority loading hints are present

4) Inline critical CSS signal

Detects inline CSS under <style> tags (especially in <head>)

Shows count and approximate size, so you can confirm whether critical CSS is being used

5) DNS Prefetch & Preconnect hints (external domains)

Looks at page resource usage and identifies the top external domains

Checks if the page includes dns-prefetch and/or preconnect hints for those domains

Treats subdomains as same-site (so your own asset subdomains don’t get mislabeled)

6) Font loading and fallback checks

Scans accessible @font-face rules and flags missing font-display

Checks whether the page has a generic fallback in the computed body font stack

Detects font file sources as:

same-site (including subdomains)

external

7) Static image caching checks (Cache-Control max-age)

Samples same-origin image resources and checks Cache-Control: max-age

Flags cases where max-age is too short (useful for spotting caching gaps)

Notes: browser scripts can’t always read headers for cross-origin CDNs unless allowed

8) INP monitor (interaction responsiveness)

Shows a live INP-style monitor while the overlay is open

Tracks real user interactions (clicks/typing)

Flags when the slowest interaction goes above 200ms

Copy report

The extension includes a “Copy as text” button that copies the audit results to your clipboard. This makes it easy to paste findings into:

Slack messages

Jira tickets

QA notes

Client updates

How to use

Open any webpage

Click the Perf Quick Audit extension icon

Review ✅ / ❌ checks in the overlay

Click an item to highlight the related element on the page (when applicable)

Use Copy as text to share results

Notes & limitations

Some checks depend on what the browser can access (example: cross-origin CSS rules or CDN response headers may be restricted).

If a hero image is set via CSS background-image instead of an <img>, it may not be detected as a “hero image”.

The tool is designed for quick audits and fast debugging, not as a replacement for Lighthouse or lab tooling.