Free Embeddable Code Tools

Add a working barcode, IBAN, VAT, ISBN, ISIN or card-number validator to your own website with one line of HTML. No signup, no API key, no maintenance — it always runs the latest version, and it's free.

How it works

Each tool below runs entirely in the visitor's browser. Copy its embed snippet, paste it into your page's HTML where you want the tool to appear, and you're done. The widget carries a small "Powered by CodeClassify" credit — that link is all we ask in return.

Great for: e-commerce help pages, developer docs, accounting and invoicing sites, self-publishing blogs, logistics tools — anywhere your readers work with codes. Need it server-side or in bulk instead? Use the pay-per-use API (10 free calls/month).

Want it programmatically?

The embeds are perfect for one-off checks on a web page. To validate thousands of codes, run it server-side, or integrate it into an app, use the CodeClassify API — the same deterministic engine as a clean JSON endpoint, with a free tier to start. See all 16 tools on the homepage.

Embeds are free to use on any website, including commercial ones, provided the "Powered by CodeClassify" link stays visible. The widgets compute results from public standards and are provided as-is, not as official or legal advice.