Viewport Kit

Viewport Kit resizes the area where a web page is actually displayed—the viewport, not the browser window—to exactly the size you want. Resizing the window alone isn't enough: the address bar and tabs take up part of it. Viewport Kit measures the real viewport and corrects for them, so when you choose 1920×1080, the page really is 1920×1080. Great for checking designs, capturing og:images and thumbnails, and testing responsive layouts. ■ One-click resizing • Presets for 1080p (1920×1080), 720p (1280×720), og:image (1200×630), Scope 2K (2048×858), Flat 2K (1998×1080) and tablet width (768) • Save the sizes you use most as custom sizes (up to 4 in the free edition) • Swap width and height in one click • If a size doesn't fit on your display, it's scaled down to the largest size that fits, keeping the aspect ratio • Optionally center the window when resizing • Works at any browser zoom level (Cmd/Ctrl +/−): sizes are applied as they would be at 100% zoom ■ Capture exactly what you see • Save the viewport as a PNG in one click • No address bar, no tabs, no rounded window corners—just a clean rectangle of the page • Save at Retina resolution, or at the exact pixel size you chose ■ Always know your current size • The current viewport size is always shown and updates automatically when the window changes ■ Want more? Go Pro With Pro (just enter a license key from Gumroad), you also get full-page capture of an entire page in a single image, viewport video recording (WebM/MP4, with auto-scroll recording), and unlimited custom sizes. ■ Privacy Your screenshots and recordings are saved only to your computer and are never uploaded. The only network request Viewport Kit makes is to Gumroad, to verify a Pro license key.