Edge Functions

Generating OG Images

Generate Open Graph images with Deno and Supabase Edge Functions. View on GitHub.

Code#

Create a handler.tsx file to construct the OG image in React:

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import { ImageResponse } from 'https://deno.land/x/og_edge@0.0.4/mod.ts'
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import React from 'https://esm.sh/react@18.2.0'
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export default function handler(req: Request) {
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  return new ImageResponse(
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    <div
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      style={{
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        width: '100%',
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        height: '100%',
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        display: 'flex',
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        alignItems: 'center',
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        justifyContent: 'center',
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        fontSize: 128,
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        background: 'lavender',
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      }}
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    >
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      Hello OG Image!
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    </div>
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  )
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}

Create an index.ts file to execute the handler on incoming requests:

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import { withSupabase } from 'npm:@supabase/server@^1'
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import handler from './handler.tsx'
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console.log('Hello from og-image Function!')
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// Public image endpoint, so deploy with --no-verify-jwt.
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export default { fetch: withSupabase({ auth: 'none' }, handler) }