Registry · Embed Widget

Embed our NAICS & SIC Lookup Tool

Add a fast, free, client-side classification search box to your site. Help your users search NAICS and SIC codes instantly, directly inside your pages.

Configure & Preview

Copy Integration Snippet

<iframe src="https://entitycodes.org/embed/widget/" width="100%" height="420"
        style="border:1px solid #e5e7eb;border-radius:12px;max-width:640px"
        title="NAICS & SIC code lookup" loading="lazy"></iframe>
<p style="font:13px sans-serif">Free <a href="https://entitycodes.org/">NAICS & SIC code lookup</a> by EntityCodes.org</p>

Usage Terms & Guidelines

Our code lookup widget is completely free to use on commercial and personal websites. To maintain eligibility, you must comply with the following simple guidelines:

Attribute the Source: The attribution link line directly below the iframe widget must remain intact, visible, and uncloaked. No rel="nofollow" or hidden CSS tricks.
No Reverse Engineering: The widget runs client-side and queries our static indexes. Do not automate queries, scrape, or flood the endpoint with artificial traffic.
No Modifications: Do not alter the iframe source URL to reference third-party files.