Everything you need to defer third-party scripts the right way.
A 3KB runtime engine, a discovery catalog, a hosted dashboard, per-script overrides, real-user CWV, PSI before/after, alerts, and a WordPress plugin that ties it all together.
Defer third-party scripts without breaking them.
Quickload swaps `<script>` MIME types so the browser parks them, then activates the original tag at trigger time — preserving currentScript.src, integrity, async/defer, and crossorigin. No worker sandbox, no tag-by-tag fragility.
- Cross-origin auto-detection
- Per-script trigger override
- Zero proxy server needed
- Works with GTM, GA4, Pixel, Hotjar, etc.
See every third-party script on your site.
Every cross-origin URL the engine touches is recorded, vendor-tagged, and surfaced in your dashboard. Filter by category, override per-script triggers, get alerts when a new vendor appears.
- 80+ vendors auto-categorized
- Real-user runtime beacon
- Server-side homepage scanner
- Daily new-domain detection
Real-user CWV + Lighthouse before/after.
The runtime captures LCP, INP, CLS, FCP, and TTFB on every visit. The dashboard runs PageSpeed Insights twice — with and without Quickload — so you can show the delta to clients without screenshotting two browser tabs.
- p75 + good/needs/poor breakdowns
- PSI before / after deltas
- Per-page-template trends
- Branded weekly client reports
Pick the right trigger for the right page.
Different page templates have different priorities. Configure trigger rules: front page on interaction, blog posts on idle, demo landing on eager, pricing on consent. The engine resolves the right trigger per request.
- interaction · idle · consent · load · eager · never
- Match by post type, template, or URL regex
- Per-script overrides via the discovered list
- Google Consent Mode v2 compatible
Alerts, CLI, REST API, block editor.
Quickload is a real ops product. WP-CLI commands for headless deploys, REST endpoints for monitoring, daily alerts to email or Slack, a Gutenberg block for content editors, and a debug overlay you can pop on with one URL param.
wp quickload status / scan / list / set-override- GET /quickload/v1/health & /export.csv
- New-vendor alerts via email + Slack
- Visual debug overlay
Integrations
Works with the stack you already run.
Quickload is platform-agnostic — it defers any cross-origin script. We've QA'd the integrations below; everything else just works because the engine doesn't care about the vendor.
Google Tag Manager
Tag manager
GA4
Analytics
Meta Pixel
Advertising
LinkedIn Insight
Advertising
TikTok Pixel
Advertising
Bing UET
Advertising
Hotjar
Heatmap
Microsoft Clarity
Heatmap
Fullstory
Heatmap
Hubspot
Forms
Marketo
Forms
Pardot
Forms
Klaviyo
Forms
6sense
B2B identity
RB2B
B2B identity
Warmly
B2B identity
Drift
Chat
Intercom
Chat
Segment
Analytics
Mixpanel
Analytics
Plausible
Analytics
OneTrust
Consent
Cookiebot
Consent
Iubenda
Consent
Questions
Common questions.
Will Quickload break my tags?
No. Quickload defers the original `<script>` tag — it doesn't fetch and re-inject the body. document.currentScript.src stays correct, integrity / nonce / async / defer attributes survive, and vendor self-bootstrappers behave normally.
Does it work with Google Tag Manager?
Yes. Quickload defers the GTM container itself; once GTM fires, GTM's own trigger system schedules its child tags. The Discovered Scripts page shows a notice when GTM is detected and points you to the GTM helper for tag-level triggers.
Does it work with my caching plugin?
Yes — Quickload runs after WordPress generates the HTML, so the rewritten markup goes into the cache like any other page. Compatibility shims for WP Rocket and W3 Total Cache are built in.
How is this different from Partytown?
Partytown sandboxes scripts inside a Web Worker, which breaks any tag that touches the DOM (chat widgets, heatmaps, A/B testing tools — most of a B2B stack). Quickload defers without sandboxing, so DOM-touching tags work normally.
Does it work outside WordPress?
The engine is a 3KB JavaScript runtime that drops into anything — Shopify themes, Webflow custom code, Next.js, raw HTML. The WordPress plugin is the most polished installer; non-WP support is on the roadmap.
Ready to ship a faster site?
Try Quickload free. Drop the WordPress plugin in, flip one toggle, watch the numbers move.