Screenshot Mockup Generator — turn screenshots into device-frame mockups

"Mockups" really come in two flavors, and knowing the difference saves a lot of detours. The first is the "device / window frame" mockup: your web or app screenshot tucked into a clean iPhone, Android, Mac or browser frame with a background and shadow — the point is to be tidy, sharp and to show off the interface itself. It's what you want for portfolios, Product Hunt hero shots, landing-page heroes, docs and app intros. The second is the "real photographic scene" mockup: your design printed on a T-shirt, mug or storefront sign in an actual photo — here the point is the real-world vibe. MockCat's screenshot tool does the first kind: every frame is code-drawn, so it stays vector-sharp at any export size, depends on no image assets, and sidesteps the Apple Design Resources and Meta device rules that forbid repackaging their bezels as assets.

A few details make or break a usable device mockup: pick the right frame — a browser window with an address bar gives a website context, a phone frame suits mobile, a laptop suits desktop apps, and "plain" gives a clean crop; don't let the background shout — one coordinated gradient to lift the UI off dead white is plenty, with enough padding to breathe; keep the shadow soft for a gentle float rather than a hard black edge; and add a touch of 3D tilt if you want some depth. MockCat wires these into handy sliders and presets, so you drop the image, pick a frame, nudge a couple of controls and you're done — all composited locally, nothing uploaded.

When should you leave this tool? When you need the photo-real vibe of "the product in the real world" — a real model wearing your tee, a hand holding a printed mug, a poster on a café wall. Code frames can't do that; you need a dedicated photographic mockup library like Placeit, where you drag your design into a real photo. MockCat's lane is clear: for sharp, tidy interface and design previews, use us — free, local, vector-crisp; for real-world photographic vibes, use a dedicated library. They're complementary — make the lightweight version here, and upgrade when you need a whole litter of real scenes.