Catalog › Duplicate Code › Duplicate JavaScript
Duplicate JavaScript
Multiple script bundles ship the same code, wasting bandwidth and parsing time.
| Check ID | DUPLICATE_JS_CODE |
|---|---|
| Category | Duplicate Code |
| Severity | Notice |
| Plans | Available on every plan |
How to fix it
Deduplicate via a shared chunk, externalise common dependencies, or audit your bundler split-chunks config.
Catch it on your site
Wrendex catches duplicate javascript on every audit. No credit card, all 140+ checks, full PDF report.