A place for developers to talk about building on Farcaster.

/dev

What is the best way to compose a dynamic image for use in social sharing? 

For example, when I share a Warpcast URL to a friend, it generates a preview. How is this done without needing to upload and store an image somewhere?

Building /bright-moments - minting onchain art IRL | /purple #15 | FID 129 #magikarp

Rome, Metropolitan City of Rome Capital, Italy

satori w/sharp works well - vercel has this built in if you're hosted there (but can get expensive).

create the svg then convert to base64 encoded png and return it, roughly like this:
```
const svg = await satori(...)
const png = await sharp(Buffer.from(svg)).png().toBuffer().then(buff => buff.toString('base64'))
...
```
i think gpt should recommend from there.