Launching today
Studio Practice
Preview any URL on every Mac screen at once
29 followers
Preview any URL on every Mac screen at once
29 followers
Paste any URL. See it rendered across all six common Mac display sizes — MacBook Air 13 and 15, MacBook Pro 14 and 16, iMac 24, and Studio Display 5K — stacked, scaled, and labeled. The notch and menu bar are where Apple puts them, so what you see matches a real fullscreen browser. Single HTML file. No signup, no tracking, no build step. Works with localhost. Download once and it runs offline forever.
Products used by Studio Practice
Explore the tech stack and tools that power Studio Practice. See what products Studio Practice uses for development, design, marketing, analytics, and more.
GitHubHow people build software
5.0 (591 reviews)
Every Studio Practice project, macsim included, lives in a GitHub repo from
day one. The single-file structure of macsim made history trivial to read
— every UI tweak is one diff, one commit. Free private repos, push, done.
The default substrate.
Claude CodeAnthropic’s deep-context AI coder
5.0 (469 reviews)
Built macsim with Claude Code as my pair. It handled the iframe scaling
math, the dark-mode CSS variables, and the focus-mode interaction logic
while I stayed focused on the UX design choices. Single HTML file, no
framework, came together in an afternoon instead of a week.
VercelThe frontend cloud. Creators of Next.js.
5.0 (891 reviews)
Studio Practice runs on Vercel. Macsim went from a single HTML file in my
repo to a public URL with zero config — push to main and it's live. Preview
deploys on every push are how I catch layout bugs before they ship.
Fastest path I've found from idea to a real link I can share with someone.