Framecast

The interesting thing about Framecast is not that it converts HTML to MP4 — plenty of things claim that — but how it does it. A screen recorder does not capture your animation; it captures your screen showing your animation, which means it taps in at the very end of the pipeline: browser paint, GPU compositing, OS blending, monitor colour profile, and a real-time encoder compressing on the fly while your CPU is still running the animation. Framecast's own guide lays out the three failure modes that follow — dropped frames (a 60fps animation on a 60Hz display has zero headroom), gradient banding when a real-time encoder cuts corners under load, and crushed colour and transparency from the compositing chain. Its answer is to decouple time from your machine: load the HTML in a real browser engine, advance a virtual clock one frame at a time, capture each frame at full quality in order, then stitch. The render is identical whether your laptop is idle or pinned. The practical advantage over export-ZIP tools is the input side. Tools that require a Claude project export only work when your animation matches the shape the tool expects — a standalone HTML file you pasted into an editor, a forked pen, a GSAP demo from a tutorial or a raw canvas sketch all sit outside that export. Framecast's rule is simply "if it runs in a browser, it renders," and everything GSAP, CSS, canvas and SVG comes out as designed up to 4K. One drop producing 16:9, 9:16 and 1:1 simultaneously is a genuine convenience for anyone posting to YouTube, TikTok and Reels from the same source. Where it stops is just as clear. There is no editing — no trimming, no effects, no audio overlay — so it sits at the end of a motion-design workflow, not inside one. It is not built for batch processing, so if you are converting dozens of animations a month the one-time $2.99 per video becomes a recurring line item rather than a one-off. And because the whole value proposition rests on output fidelity, the free watermarked preview is the right first move: render once, watch the frames and the gradients, then pay for the clean export. Treat Framecast as a specialist component — the final mile between a browser animation and a postable file — and it earns its place. Treat it as your video stack and you will hit its edges quickly.