About Reyoy

A good post deserves more than one platform. The problem is that a screenshot looks flat on Reels and dies on TikTok, and the tools that fix it want an account, a subscription and a watermark.

Reyoy is the small version of that idea: paste a post link, watch the text type itself out on a clean card, download the MP4. That is the whole product.

How it is built

The site is plain static pages with five small serverless readers, one per source. Each takes the post link, checks it really is a post from that site, and asks that site's public endpoint for the name, handle, text and date: X's oEmbed and syndication endpoints, Reddit's .json listing (then the thread's Atom feed, then oEmbed), Bluesky's public AppView, the Mastodon instance's own API, and the Hacker News Firebase API. No API key, no login, nothing stored. The AI chat and search mockups need no reader, because you type them in yourself.

Everything after that happens on your machine. The card is drawn frame by frame on a canvas, and the frames go straight into your browser's built in H.264 encoder, muxed into an MP4 in memory. Nothing is uploaded and there is no queue to wait in, which is why it is free.

What it exports

• 9:16 at 1080 x 1920 for Reels, Shorts and TikTok
• 4:5 at 1080 x 1350 for the feed
• 1:1 at 1080 x 1080
• 16:9 at 1920 x 1080

All at 30 frames per second, H.264, no audio track. Add your own music in whatever app you post from.

Rules of the road

Use your own posts, or posts you have permission to use. Manual mode exists so you can write your own text, not so you can fake somebody else's. The terms cover the rest.

Who made it

Reyoy is built and run by Dylan, who posts about what he builds as @Dylveloper. Ideas, bugs and feature requests are welcome as a direct message there, or by email to support@sundrymill.com. The contact page has the details.

Not affiliated with X

Reyoy is independent. It is not affiliated with, endorsed by or sponsored by X Corp.