Why we built ViewPort

We kept shipping the same class of bug: a layout that looked fine on the laptop we designed it on and broke on literally anything else. Not because anyone was careless — because checking every breakpoint by hand, for every page, on every change, does not scale past a handful of pages.

ViewPort exists to make that check free. Paste a URL, get every page rendered across every device you care about, in one grid. No account, no server round-trip, no dashboard to configure first.

It runs entirely on your machine. Crawl data and screenshots are stored locally in a database on disk and never uploaded anywhere — the only network calls it makes are to crawl the site you point it at, and to check for app updates.