Car seat law checker widget for your site

A short HTML snippet drops a verified car seat law checker, covering all 50 states, DC, and US territories, into any post. Customize it, copy one line, done.

Customize

Default state

Pre-select a state, or let each visitor choose their own.

Lock to this state

Hide the state picker entirely.

Theme

Light Dark Match

Accent color

The button, links, and highlights.

Default units

Inches / lb cm / kg

Pediatric recommendation

Show the AAP best-practice note under the legal answer.

Widget header

Show the title & shield at the top.

Corner radius (12px)

Maximum width

The widget fills its container up to this width.

Compact mode

Tighter padding for sidebars.

Live preview

Embed code

Updates as you change settings

All 50 states, DC, and US territories in inches and centimeters, verified from official statutes
Auto-updates as we verify each law, so embedded widgets never go stale
Privacy-friendly, no cookies and no third-party trackers
Under 50 KB, lazy iframe, won't hurt Core Web Vitals
Free, no signup, no API key, no usage limits

How to add it

1. Copy the embed code above (the Copy button is in the top-right of the snippet).
2. Paste it into any HTML block on your site, then publish.

Works on WordPress (Custom HTML block), Squarespace (Code block), Ghost (HTML card), Webflow (Embed element), Wix, Jekyll, Hugo, Astro, Next.js, and any static HTML page.

Usage terms. The SeatChecker attribution that sits directly below the widget must remain visible and clickable. Free for personal blogs, commercial publications, clinics, and educational resources. Laws change, so the widget is general information, not legal advice. Found a data error? Email [email protected].

Frequently asked questions

Will this widget slow down my site?

No. The widget loads inside a lazy-loaded iframe that totals under 50 KB. It makes no external requests during page load, so it will not affect your Core Web Vitals or Lighthouse score.

Does it work on WordPress?

Yes. Open the block editor, add a Custom HTML block, and paste the embed code. The widget renders immediately in the preview and on your published page.

Will the law data stay current?

Yes. The widget pulls from a database of all 50 states, DC, and the US territories, verified from official statutes with a last-verified date. When we update the data, every embedded widget reflects the change automatically.

Can I customize the colors?

Yes. The widget supports light and dark themes, a custom accent color via hex code to match your brand, adjustable corner radius, and a compact mode for sidebar embeds. Use the customizer on this page to configure everything visually.

Do I need to create an account or pay anything?

No. The widget is completely free with no registration, API keys, or usage limits. Paste the code and it works.

What platforms does it support?

Any platform that allows HTML embeds: WordPress, Squarespace, Ghost, Webflow, Wix, Jekyll, Hugo, Astro, Next.js, and static HTML sites.

Can I remove the SeatChecker attribution?

The attribution line that sits directly below the widget must remain visible. It is a small, unobtrusive credit that helps us fund ongoing statute verification.

Related tools

Prefer to use the checker directly or read the underlying data? Start here.

Tool

Use the checker

Check the legally required restraint for your child right now, on the homepage.

Reference

Browse state laws

Read the full car seat law for any of the 50 states, DC, or US territories, with the statute.

Tool

Compare two states

Put two states side by side to see which has the stricter car seat law.