ScriptShield

Read-only external diagnostic

Find the scripts slowing your Shopify store without breaking your theme.

Third-party JavaScript weight and main-thread block time, measured from outside your storefront. No invasive edits, no forced app removals.

Audit my storefrontSee how we are different

Sample scorecard

velvetcanopy.com

62

Speed score

512

KB JS weight

842

ms block time

Block time by vendor842 ms
  • Klaviyo312 ms
  • Loox178 ms
  • Okendo98 ms

Diagnostics first. Theme surgery never by default.

ScriptShield is built for merchants who need proof, not another app that rewrites their storefront overnight.

What we do

Read-only external scan

ScriptShield audits public storefront assets from the outside. Your theme files, app embeds, and checkout remain untouched.

What we do

No uninstall pressure

See which Klaviyo, Loox, or Yotpo scripts cost milliseconds without ripping out revenue tooling on day one.

What we avoid

Invasive optimization apps

Many speed tools inject snippets, rewrite Liquid, or force theme diffs that break sections and skew attribution.

What we avoid

Theme-breaking refactors

Blind JS deferral can delay reviews widgets and break add-to-cart flows. Diagnostics should come before surgery.

Three steps to a scorecard

  1. Step 1

    Paste your Shopify storefront URL

  2. Step 2

    ScriptShield maps third-party script weight and block time

  3. Step 3

    Prioritize HIGH impact vendors with a shareable scorecard

Ready to see what your apps are costing in milliseconds?

Open the control room