Webpage Size Checker

Analyze source code weight and simulate page budgets. Calculate Gzip compression savings and performance impact instantly.

Paste your HTML, CSS, or JS code below to measure its transfer size.

Enter the estimated sizes of your assets (in KB) to calculate total page weight.

Images

HTML/Scripts/CSS

Fonts & Media

Total Page Weight

2.0 MB

Needs Improvement

Why Page Size Matters

The size of your webpage (measured in Kilobytes or Megabytes) directly correlates to how fast it loads for users. While fast internet connections are common, mobile networks can still be inconsistent. Keeping your page weight low ensures your site is accessible to everyone, reduces bounce rates, and improves SEO rankings.

Benchmarks for 2025

Under 500KB: Excellent. Instant load on almost any device. Ideal for blogs and text-heavy sites.
500KB - 1.5MB: Good. Standard for modern landing pages with a few optimized images.
1.5MB - 3MB: Average. Acceptable for e-commerce, but requires good hosting and CDN.
Over 3MB: Poor. Likely to cause frustration on mobile networks (3G/4G). Needs optimization immediately.

Did you know? Text content (HTML, CSS, JS) compresses extremely well. Gzip or Brotli compression can often reduce the transfer size of code by 70% or more. Use the "Source Analyzer" tab above to verify this savings.

How to Reduce Page Weight

1. Optimize Images: Never upload raw photos. Use formats like WebP and resize images to the exact display dimensions.
2. Minify Code: Remove whitespace and comments from HTML/CSS/JS.
3. Use Standard Fonts: Custom web fonts can add 100KB+ per weight. Stick to system fonts if speed is critical.