ScriptSpool

ScriptSpool is a free browser tool that turns a block of source code into either a high-resolution snippet image or a 60 frames per second typing animation exported as MP4 or GIF. Paste code, pick a theme and a window style, and a few seconds later you have a Retina-quality PNG for a tweet or a short video of the code being typed out for a tutorial, a slide deck or a LinkedIn post. It exists because static screenshots of code are dull, screen recordings of an editor are fiddly to make clean, and the popular snippet beautifiers mostly stop at still images. The site positions it as a Carbon alternative for the stills, with the motion export as the part those tools don't do.

Everything happens in the page. You paste code, drop a file or import from a raw URL, choose the language, and set tab titles if the snippet spans several files. Styling covers dark and light syntax themes, a gradient canvas background, font family, macOS or Windows style window controls, and typing speed at half, normal or double pace. Recording produces a smooth typing motion, either character by character or line by line, and the encoder writes an MP4 or GIF without freezing the tab. For stills there's a 2x or 3x DPI PNG, a vector SVG, or a copy straight to the clipboard. The editor itself runs on CodeMirror 6 with Lezer grammars, so you get bracket auto-close, auto-indent, search and replace and undo history rather than a plain text box.

It fits developers who publish, which is a wider group than it sounds. Educators making tutorials, engineers announcing a release on X or LinkedIn, technical writers dressing up documentation, and anyone presenting a pull request in a talk can use the diff highlighting, which marks added and removed lines with green and rose badges, alongside line spotlights and callout notes that point at the part of the snippet that matters. Longer snippets get some structure too. Multi-file window headers split a snippet into tabs with their own titles inside one frame, which suits a component and its test or a before and after, and the spotlight dims everything except the lines you choose, so a tutorial frame says where to look without an arrow drawn on afterwards.

The distinguishing choice is that ScriptSpool is entirely client-side. Syntax highlighting, image rendering and video encoding all run inside the browser, and no code is sent to a server, which makes it usable with proprietary snippets that couldn't go through a hosted service. There's no login and no ads. Setups can be saved as named snapshots, up to 50 of them, in the browser's local storage, and a share link compresses the code, tab titles, languages and theme into a short URL hash so a colleague opens the same snippet with the same styling.

Language coverage is broad for a tool this size. It includes TypeScript, JavaScript, Python, Rust, Go, C++, C#, Java, PHP, HTML, CSS, SQL, JSON, YAML, Bash, Dockerfile, Markdown, Swift, Kotlin, Ruby, Scala, R, Dart, Vue, Svelte, Astro, Elixir and GraphQL, with language support loaded lazily so the first paint stays fast. The theme choices are the ones developers already use in their editors, among them Vitesse Dark and Light, One Dark Pro, Dracula, Tokyo Night, Nord, Catppuccin Mocha and Latte, and GitHub Dark and Light.

The limits follow from the design. Because nothing is stored on a server, snapshots live only in the browser where you made them, and clearing site data removes them. There's no account, so there's no sync between machines beyond the share link. The video output is a typing animation of the snippet, not a recording of a running program, and the site is a single-page app whose documentation is one static overview page. It's the work of one developer, Septiyan Bintang Ramadhan Putra, published under the Pixzens umbrella, so support is informal and there's no published contact address. Against a screen recorder the trade is fidelity for cleanliness. A recording captures a real editor along with your tabs, notifications and typos, and needs trimming before it's fit to post. ScriptSpool renders exactly the code you pasted at the speed you chose with nothing else in frame, but it can't show a program running or a test suite passing.

Access is free in the plain sense. There's no paid tier, no account and no ads, and the site says outright that it's completely free to use. There's nothing to install either, since the whole application loads in the page. That makes it an easy tool to reach for in the gap between a dull screenshot and a full screen recording, and since nothing leaves the browser there's nothing to sign up for, nothing to pay for, and nothing to clean up afterwards.