Free • No API Key Required

Logo API for HTML

The simplest integration — just an HTML image tag. No JavaScript, no build tools, no complexity.

What is apistemic logos?

A free logo API that returns company logos by domain or LinkedIn slug.

Any Company

Fetch logos for any domain — from Fortune 500 to startups. Just pass the domain and get a logo.

No API Keys

No registration, no authentication, no rate limits for reasonable usage. Just HTTP requests.

WebP Format

All logos served in WebP format — 25-35% smaller than PNG with full transparency support.

Code Examples

Production-ready code you can copy and paste into your project.

Basic Usage

<!-- Basic usage (shows monogram if not found) -->
<img src="https://logos-api.apistemic.com/domain:stripe.com" alt="Stripe logo">

<!-- With lazy loading (recommended for lists) -->
<img
  src="https://logos-api.apistemic.com/domain:stripe.com"
  alt="Stripe logo"
  loading="lazy"
  width="64"
  height="64"
>

Custom Fallback

<!-- With custom fallback (use ?fallback=404 to trigger onerror) -->
<img
  src="https://logos-api.apistemic.com/domain:stripe.com?fallback=404"
  alt="Stripe logo"
  onerror="this.src='/fallback-logo.png'"
>

Free with Attribution

The logo API is completely free. Just add a visible attribution link.

✓Add a backlink on your homepage and on pages displaying logos
✓Use a User-Agent with contact information for server-side requests

Add this link:

Logos by <a href="https://logos.apistemic.com">apistemic logos</a>

Server-side? Use a User-Agent with contact info and limit to 1 rps. We verify attribution. Don't use rel="nofollow". See full rules.

Can't add attribution? Let's talk.

Related Integrations

Explore more ways to integrate the Logo API.

Ready to integrate?

Try the API live or explore all available integrations.

Try the API All Integrations