Free LCP Tester & Analyzer
Test and analyze your Largest Contentful Paint (LCP) score. Measure this page's LCP in real-time or enter a value from PageSpeed Insights to get a rating and tips.
LCP Score Analyzer
From PageSpeed Insights, Lighthouse, or DevTools
LCP Thresholds
Good
< 2.5s
Needs Improvement
2.5s – 4.0s
Poor
> 4.0s
How to Improve LCP
Optimize hero images
Compress above-fold images and use modern formats (WebP/AVIF). Add width/height attributes.
Preload critical resources
Use <link rel="preload"> for your largest contentful image or font to start loading earlier.
Reduce server response time
Aim for TTFB under 600ms. Use caching, CDN, and optimize server-side processing.
Remove render-blocking resources
Defer non-critical CSS and JavaScript to avoid blocking the main thread.
Avoid lazy-loading above-fold images
Don't apply loading="lazy" to the hero image — it delays LCP.
Use a CDN
Serve assets from a CDN geographically close to your users to reduce latency.
LCP is one of Google's Core Web Vitals and directly impacts your search rankings. Measure it with PageSpeed Insights, Chrome DevTools Performance panel, or Lighthouse.
Frequently Asked Questions
What is LCP?
Largest Contentful Paint measures how long it takes for the largest visible element (usually a hero image or heading) to load.
What is a good LCP score?
Under 2.5 seconds is Good. 2.5–4.0s needs improvement. Over 4.0s is Poor.
Is it free?
Yes, completely free.
Is my data safe with this tool?
Absolutely. The LCP Tester & Analyzer processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the LCP Tester & Analyzer work on mobile devices?
Yes, the LCP Tester & Analyzer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the LCP Tester & Analyzer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
Does this tool follow Google's latest guidelines?
Yes, the LCP Tester & Analyzer is built following current Google Search guidelines and best practices. We regularly update the tool to reflect changes in search engine requirements.
How do I use the LCP Tester & Analyzer?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The LCP Tester & Analyzer works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free LCP Tester & Analyzer
Free LCP Tester & Analyzer is a free, browser-based tool in our SEO Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.