/og-image

og-image service powered by deno.com

Primary LanguageJavaScript

Open Graph Image as a Service

Serverless service that generates dynamic Open Graph images that you can embed in your <meta> tags.

For each keystroke, headless chromium is used to render an HTML page and take a screenshot of the result which gets cached.

See the image embedded in the tweet for a real use case.

What is an Open Graph Image?

Have you ever posted a hyperlink to Twitter, Facebook, or Slack and seen an image popup? How did your social network know how to "unfurl" the URL and get an image? The answer is in your <head>.

The Open Graph protocol says you can put a <meta> tag in the <head> of a webpage to define this image.

It looks like the following:

<head>
  <title>Title</title>
  <meta property="og:image" content="http://example.com/logo.jpg" />
</head>

Local Service

deployctl run https://raw.githubusercontent.com/postui/og-image/main/og-image.js