Free Website Speed Test - TTFB, Page Size & Performance Check
Run a free website speed test to measure TTFB, total load time, page size, compression, HTTP version, and redirect chain. Get an A-F performance grade and actionable optimization tips.
Last updated: May 2026
Website Speed Tester
Enter a full URL including https://
Measure:
- Time to First Byte
- Total Load Time
- Page Size & Compression
- HTTP Version & Redirects
- A-F Performance Grade
Speed Test Results
Your speed test results will appear here
Enter a URL and click Test Speed
Want to track your website's performance?
Use UseClick analytics to track clicks and performance across all your links. Understand where your traffic comes from and how they engage with your content.
Why Website Speed Matters
Website speed directly impacts user experience, conversion rates, and search engine rankings. Slow-loading pages cause visitors to leave, increasing bounce rates and lost revenue. Google's Core Web Vitals metrics now use page speed as a ranking factor, making it essential for SEO performance.
Why Website Speed Matters
Page speed is one of the few optimizations that simultaneously improves SEO, conversions, and user satisfaction.
1. Mobile Abandonment
Google found that 53% of mobile users abandon sites that take longer than 3 seconds to load.
53% of mobile users abandon sites slower than 3s (Google)
2. Conversion Loss
Akamai's research shows that a 1-second delay in page load time reduces conversions by 7%.
1s delay = 7% drop in conversions (Akamai)
3. SEO Rankings
Google uses Core Web Vitals as an explicit ranking signal.
Core Web Vitals are a Google ranking factor since 2021
What We Measure vs Full Lighthouse Audits
Honest disclaimer: our tool focuses on server-side performance. For a complete user-experience audit, combine it with Lighthouse.
- Time to First Byte (TTFB)
- Total download time
- Initial HTML payload size
- Compression detection (gzip / Brotli)
- HTTP protocol version
- Redirect chain length
- Server & Cache-Control headers
- Instant results (no Chrome instance)
- Largest Contentful Paint (LCP)
- Cumulative Layout Shift (CLS)
- Interaction to Next Paint (INP)
- First Contentful Paint (FCP)
- JavaScript execution time
- Accessibility & best-practice audits
- Image and font optimization checks
- Field data from real users (CrUX)
Honest Disclaimer
Our tool is a server-side performance check, not a full browser audit.
Speed Optimization Tips
Five high-impact improvements that almost always move the needle on website speed.
1. Enable Compression
Turn on gzip or Brotli compression at the server or CDN level.
2. Use a CDN
A Content Delivery Network caches your content at edge locations close to your users.
3. Optimize Images
Images are usually the largest assets on a page. Convert to WebP or AVIF.
4. Upgrade to HTTP/2 or HTTP/3
HTTP/2 multiplexes multiple requests over a single connection.
5. Set Cache-Control Headers
Add long-lived Cache-Control headers for static assets.
6. Eliminate Redirect Chains
Each redirect adds 100-500ms of latency.
How Our Website Speed Test Works
Five steps from URL submission to actionable performance grade.
Redirect Chain Discovery
We send HEAD requests and follow each Location header manually.
TTFB Measurement
We issue a GET request and record the elapsed time until the response headers are returned.
Payload & Compression Analysis
We stream the full response body, measure its byte size, and inspect compression.
Header & Protocol Inspection
We read the Server, Cache-Control, and Content-Type response headers.
Grade & Recommendations
We combine TTFB, page size, and compression into a single A-F grade.
Frequently Asked Questions
Yes, the UseClick website speed test is completely free with no signup, no account creation, and no usage limits.
Our website speed test measures server-side performance. Lighthouse measures client-side Core Web Vitals.
Time to First Byte (TTFB) measures how long it takes for the first byte of the response to arrive.
Page size is the total number of bytes downloaded and is one of the biggest predictors of load time.
Google uses page speed as a ranking signal. Slow sites lose visibility in search results.
Our test sends a single GET request and does not load JavaScript or fire analytics events.
Make Every Link You Share Fast and Trackable
A fast website is only half the battle. The other half is knowing which campaigns drive traffic.
Edge Redirects
Sub-50ms redirects from Cloudflare's global network
Branded Domains
Use your own domain with automatic SSL
Real-Time Analytics
Track clicks, locations, devices, and referrers
Ready to track smarter?
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