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Page Calc

Add up page size and load time. Nothing leaves your browser.

Assets
Add an asset or paste a list of sizes to start.
Total size
—
Add an asset or paste a list of sizes to start.
Biggest assets
—
Load time (estimate, single download, no parallelism)
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Page Calc Pro

$1.99/90d
    Card
    USDT · Crypto

    Pay securely by card, Apple Pay, or Google Pay via Stripe.

    🔒 100% private · runs in your browser

    Estimate your page weight fast

    Enter your page's assets and see total size, load time on real connections, and what to trim first.

    Free

    • Up to 15 asset rows (name, type, size)
    • Total size and per-type breakdown (HTML, CSS, JS, Images, Fonts, Other)
    • Load time estimate on 3 connections: Slow 3G, Fast 3G, 4G
    • Biggest-asset highlight (top 3 by size)
    • Paste a list of sizes to fill rows
    • Copy summary as plain text

    Pro PRO

    • Unlimited asset rows (cap 2,000)
    • All 6 connection presets plus custom Mbps and latency
    • Compression estimate (gzip/brotli) per type
    • Performance budget check (set a KB limit, pass/fail)
    • Export CSV and JSON
    • Saved history of the last 20 calculations (localStorage)
    • Import by pasting a HAR file (JSON) to auto-fill assets
    100% private — your data never leaves your device. v1.0.0

    Embed Page Calc

    Paste this into any page:

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