Estimate your website's total size, load times, and performance grade
See realistic load times across 3G, 4G, 5G, and broadband connections.
Get an instant A–F grade based on your total page weight.
Receive specific suggestions targeting your heaviest resource types.
Compare your page weight against the 2.5 MB mobile median.
Page weight is the total size of all resources a browser downloads to fully render a web page, including HTML, CSS, JavaScript, images, fonts, and media files. It directly impacts load time and user experience, especially on mobile networks.
Aim for under 1 MB for fast mobile experiences. The median mobile page is about 2.5 MB according to HTTP Archive. Pages under 500 KB typically load in under 3 seconds on 4G, providing an excellent user experience.
Load times are estimated by dividing total page weight by typical real-world throughput: 3G ≈ 0.75 Mbps (~94 KB/s), 4G ≈ 10 Mbps (~1.2 MB/s), 5G ≈ 50 Mbps (~6 MB/s), Broadband ≈ 25 Mbps (~3 MB/s). Actual times vary based on latency, CDN usage, compression, and server response time.