Embed Widget

Add the Crypto404 address scanner to your website or app. Let your users verify blockchain addresses directly, without leaving your site.

Quick Start

Copy and paste the following code into your HTML to embed the Crypto404 scanner:

<iframe
  src="https://crypto404.com/embed"
  width="400"
  height="300"
  frameborder="0"
  title="Crypto404 Address Scanner"
  allow="clipboard-read; clipboard-write"
></iframe>

The widget automatically adapts to the available width. We recommend a minimum width of 320px and minimum height of 280px.

Customization Options

You can customize the embed widget using URL parameters:

Default Blockchain

Pre-select a blockchain in the dropdown using the chain parameter:

https://crypto404.com/embed?chain=bitcoin

Supported values: bitcoin, ethereum, solana, cardano, polkadot, cosmos, tron, ripple, litecoin, dogecoin, avalanche, monero, zcash, polygon, bsc, arbitrum, optimism, base, zksync, osmosis, celestia, injective

Theme

Choose between dark and light themes using the theme parameter:

https://crypto404.com/embed?theme=dark

Supported values: dark (default), light

Compact Mode

Use a more compact layout for tight spaces with the compact parameter:

https://crypto404.com/embed?compact=true

Combined Example

Combine multiple parameters:

https://crypto404.com/embed?chain=ethereum&theme=dark&compact=true

Responsive Embedding

For a responsive embed that adapts to the container width, use this CSS wrapper:

<div style="position: relative; width: 100%; max-width: 400px;">
  <iframe
    src="https://crypto404.com/embed"
    style="width: 100%; height: 300px; border: none; border-radius: 12px;"
    title="Crypto404 Address Scanner"
    allow="clipboard-read; clipboard-write"
  ></iframe>
</div>

Why Embed Crypto404?

Protect Your Users

Let users verify addresses before sending funds, reducing scam losses on your platform.

Zero Setup

Just paste the iframe code. No API keys, no backend integration, no maintenance required.

22+ Blockchains

Supports Bitcoin, Ethereum, Solana, and 19 more blockchains out of the box.

Rate Limits

The embed widget shares the same rate limits as the main scanner. For high-traffic sites that need higher limits, consider using our API directly.

Free Tier

100 scans/hour per IP

Need More?

View API Docs

Questions about embedding? Need help with integration?